Answer: To find the vertex of the graph of the equation Y=3x^2+6x+1, we can use the formula:
x = -b/2a
where a = 3 and b = 6, which are the coefficients of the x^2 and x terms, respectively.
x = -6/(2 x 3) = -1
Substituting x = -1 into the equation, we get:
Y = 3(-1)^2 + 6(-1) + 1 = -2
Therefore, the vertex of the graph is (-1, -2), so the answer is A. (-1,-2).
Step-by-step explanation:
On the curve y = x3, point p has the coordinates (2, 8). what is the slope of the curve at point p?
The slope of the curve y = x^3 at point P(2, 8) is 12.
To find the slope of the curve y = x^3 at point P with coordinates (2, 8), we need to determine the derivative of the function and then evaluate it at x = 2.
Step 1: Find the derivative of the function y = x^3.
The derivative, dy/dx, represents the slope of the curve. To find the derivative of y = x^3, apply the power rule: d(x^n)/dx = n * x^(n-1).
So, dy/dx = 3 * x^(3-1) = 3x^2.
Step 2: Evaluate the derivative at the given point P (2, 8).
To find the slope at point P, substitute the x-coordinate (2) into the derivative: 3 * (2)^2 = 3 * 4 = 12.
Thus, the slope of the curve y = x^3 at point P(2, 8) is 12.
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A skier can purchase a daily or season pass.
The daily pass costs $48 per day and included
the price of ski rentals. The season pass costs
$190 plus a daily fee of $10 to rent the skis.
How many days would a skier have to go skiing
in order for both options to cost the same?
A.
5 days
C. 240 days
D. 10 days
B.
3 days
We know that the skier would have to go skiing for 5 days in order for both options to cost the same.
To find out how many days a skier would have to go skiing for both options to cost the same, we need to set up an equation. Let's use "d" to represent the number of days the skier goes skiing.
For the daily pass option:
Total cost = $48 x d
For the season pass option:
Total cost = $190 + ($10 x d)
Now we can set up the equation:
$48 x d = $190 + ($10 x d)
Simplifying this equation, we get:
$38 x d = $190
Solving for "d", we get:
d = 5
Therefore, the skier would have to go skiing for 5 days in order for both options to cost the same.
So the answer is A. 5 days.
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Ayuda doy corona porfavor porfavor!!!!!!!
INVENTEN UN PROBLEMA QUE PUEDA RESOLVERSE CON EL CALCULO A) Y OTRO QUE SE PUEDA RESOLVERSE CON EL CALCULO B)
a) 45 x 2 + 150 x 4 x 3 b) ( 45 x 2 + 150 x 4) x 3
Lo siento, pero los problemas que ha proporcionado no están relacionados con el cálculo. El problema a) es simplemente una operación de multiplicación y suma, y el problema b) es una operación de multiplicación y suma agrupada. Para crear un problema que pueda resolverse con cálculo, podría plantear algo como:
a) ¿Cuál es la tasa de cambio de la función f(x) = x^2 en el punto x = 3?
b) ¿Cuál es el valor máximo de la función g(x) = 3x^2 - 12x + 5 en el intervalo [0, 4]?
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A line passes through the points (–
3,–
18) and (3,18). Write its equation in slope-intercept form
The equation of the line with given coordinates in slope intercept form is given by y = 6x.
Use the slope-intercept form of the equation of a line,
y = mx + b,
where m is the slope of the line
And b is the y-intercept.
The slope of the line is equals to,
m = (y₂ - y₁) / (x₂ - x₁)
where (x₁, y₁) and (x₂, y₂) are the coordinates of the two points on the line.
Using the coordinates (-3, -18) and (3, 18), we get,
⇒m = (18 - (-18)) / (3 - (-3))
⇒m = 36 / 6
⇒m = 6
So the slope of the line is 6.
Now we can use the slope-intercept form of the equation of a line .
Substitute in the slope and one of the points, say (-3, -18) to get the y-intercept,
y = mx + b
⇒ -18 = 6(-3) + b
⇒ -18 = -18 + b
⇒ b = 0
So the y-intercept is 0.
Putting it all together, the equation of the line in slope-intercept form is,
y = 6x + 0
⇒ y = 6x
Therefore, the slope intercept form of the line is equal to y = 6x.
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Harper uploaded a funny video of her dog onto a website.
The relationship between the elapsed time, ddd, in days, since the video was first uploaded, and the total number of views, V(d)V(d)V, left parenthesis, d, right parenthesis, that the video received is modeled by the following function.
V(d)=4^{{1.25d}}V(d)=4
1.25d
V, left parenthesis, d, right parenthesis, equals, 4, start superscript, 1, point, 25, d, end superscript
How many views will the video receive after 666 days?
After 666 days, the video will receive approximately 33,621,452 views.
We are given the function V(d) = 4^(1.25d), where d represents the number of days since the video was uploaded and V(d) represents the number of views the video has received at that time. To find the number of views the video will receive after 666 days, we need to evaluate V(666).
Plugging in d = 666 into the function, we get V(666) = 4^(1.25*666). Using a calculator, we can simplify this to V(666) ≈ 33,621,452. Therefore, after 666 days, the video will receive approximately 33,621,452 views.
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HELP FAST PLEASEEE
the M is a typo it’s supposed to be X
Answer:
x=7
Step-by-step explanation:
Because all the bases are the same you can ignore the 8's.
Instead solve for 15=x+8
in which you would subtract the 8 to the left side, and 15-8=7
On the interval [0, 2] the polar curve r = 8o2 has arc length ______ units.
The arc length of the polar curve r = 8θ^2 on the interval [0, 2] is approximately 70.71 units.
The polar curve r = 8θ^2 on the interval [0, 2] has an arc length which can be calculated using the formula for arc length in polar coordinates:
L = ∫√(r^2 + (dr/dθ)^2) dθ, from θ = 0 to θ = 2.
First, we need to find the derivative dr/dθ:
r = 8θ^2, so dr/dθ = 16θ.
Now, plug r and dr/dθ into the arc length formula:
L = ∫√((8θ^2)^2 + (16θ)^2) dθ, from θ = 0 to θ = 2.
Simplify the integrand:
L = ∫√(64θ^4 + 256θ^2) dθ, from θ = 0 to θ = 2.
Factor out 64θ^2:
L = ∫√(64θ^2(1 + θ^2)) dθ, from θ = 0 to θ = 2.
Now, apply the substitution u = 1 + θ^2, so du = 2θ dθ:
L = 32∫√(u) du, from u = 1 to u = 5.
Integrate and evaluate:
L = (32/3)(u^(3/2)) | from u = 1 to u = 5.
L = (32/3)(5^(3/2) - 1^(3/2)).
L ≈ 70.71 units.
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The tangent plane to the surface with equation - in (9) +-3 at the point (z,y,z) - (2,1,9) has the equation ________.
The equation of the tangent plane to the surface with equation - in (9) +-3 at the point (2,1,9), first need to find the partial derivatives of the function with respect to x, y, and z. However, the surface equation provided seems to be incorrect or incomplete. Please provide the correct surface equation in the form f(x, y, z) = constant.
Let's call the function f(x, y, z) = - in (9) +-3.
∂f/∂x = 0 (since there is no x term in the function)
∂f/∂y = 0 (since there is no y term in the function)
∂f/∂z = -3/((z-9)^2)
Now we can use the formula for the equation of the tangent plane at a point (a,b,c) on a surface z=f(x,y):
z - f(a,b) = (∂f/∂x)(a,b)(x-a) + (∂f/∂y)(a,b)(y-b)
+ (∂f/∂z)(a,b)(z-c)
Plugging in the values we have, we get:
z - (- in (9) +-3)|_(2,1) = 0(x-2) + 0(y-1) - (3/((z-9)^2))|_(2,1,9)(z-9)
Simplifying:
z + in (9) - 3 = -3(z-9)
4z = 30
z = 7.5
So the equation of the tangent plane is:
z - (- in (9) +-3)|_(2,1) = (-3/((z-9)^2))|_(2,1,9)(z-9)
z - in (9) - 3 = -3(7.5-9)
z - in (9) - 3 = 4.5
z = 12.5
Therefore, the equation of the tangent plane to the surface with equation - in (9) +-3 at the point (2,1,9) is:
z - in (9) - 3 = -3/((z-9)^2)(z-9)
z - in (9) - 3 = -3(z-9)/(z-9)^2
z - in (9) - 3 = -3/(z-9)
z = 3/(z-9) + in (9) + 3
or
3x + 3y - 4z = -27 + in (9)
To find the equation of the tangent plane to the surface with equation ln(9) +- 3 at the point (x, y, z) = (2, 1, 9), follow these steps:
1. Determine the gradient vector of the given surface at the point (2, 1, 9).
2. Use the gradient vector as the normal vector of the tangent plane.
3. Write the equation of the tangent plane using the normal vector and the given point.
However, the surface equation provided seems to be incorrect or incomplete. Please provide the correct surface equation in the form f(x, y, z) = constant, so that I can help you find the equation of the tangent plane.
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The Jones' family experienced a loss of $1,760 in purchasing power last year. If the inflation rate was
3%, find the percentage raise received on the family's $88,000 yearly income. Please explain
Thus, the percentage raise received on the family's $88,000 yearly income is 9.4%.
Explain about the percentage raise:The difference in between final value and the starting value, stated as a percentage, is known as a percentage increase.
The base amount still determines whether a percentage rise or drop by a given percentage occurs. The absolute value change also changes if the basic amount does.
Hence, although the percentage rise or reduction is the same in this instance, the absolute increase is different.
Given data:
Yearly income = $88,000 Inflation rate - 3%From the table, compound interest for the yearly inflation rate of 3% is 1.09417024.
Thus,
amount after compounding:
A = $88,000 * 1.09417024.
A = 96286.98112
A = $96286.98
percentage raise = (96286.98 - 88,000 )/ 88,000
percentage raise = 0.094 * 100
percentage raise = 9.4%
Thus, the percentage raise received on the family's $88,000 yearly income is 9.4%.
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Simplify −2r(−16r + 3r − 18). −26r2 − 36r 26r2 + 36 26r2 + 36r −26r2 + 36r
Answer:
26r^2 + 36r.
Step-by-step explanation:
Find the measure of the arc or angle indicated. Assume that lines which appear tangent are tangent
The sum of all the angles in a quadrilateral is 360° ,So The angle measure indicated is 137°.
What is radius?
In classical geometry, the radius of a circle or sphere is any line segment that links the object's centre to its edge; in more modern usage, the term also refers to the length of such line segments. The Latin term "radius," which may also be used to describe a chariot wheel spoke, is where the word "radius" first appeared.
The length of tangents drawn from an external point is known to be constant. The circle's radius across the point of contact and any other point on the circle are perpendicular to the tangent. A quadrilateral has 360° of angles total. In light of this, 137° is the indicated angle measurement.
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Correct question is
Find the angle measure indicated. Assume that lines which appear to be tangent are tangent.
When he was 30, Kearney began investing $200 per month in various securities for his retirement savings. His investments averaged a 5. 5% annual rate of return until he retired at age 68. What was the value of Kearney's retirement savings when he retired? Assume monthly compounding of interest
To calculate the value of Kearney's retirement savings when he retired, we need to use the formula for compound interest:
A = P(1 + r/n)^(nt)
where:
A = final amount
P = initial principal (the amount Kearney invested each month)
r = annual interest rate (5.5%)
n = number of times interest is compounded per year (12, since we're assuming monthly compounding)
t = number of years
First, we need to calculate the total number of payments Kearney made into his retirement savings:
68 - 30 = 38 years
Since Kearney made monthly payments, the total number of payments is:
38 years x 12 months/year = 456 payments
Next, we need to calculate the value of each payment after it has earned interest. We can use the same formula as above, but with t = 1 (since we're calculating the value of one payment period):
P' = P(1 + r/n)^(nt)
P' = 200(1 + 0.055/12)^(12*1)
P' = 200(1.00458333333)^12
P' = 200(1.00458333333)^12
P' = 200(1.00458333333)^12
P' = 243.382740047
So each $200 payment is worth $243.38 after one month of earning interest.
Now we can use the formula for the future value of an annuity to calculate the total value of Kearney's retirement savings:
A = P'[(1 + r/n)^(nt) - 1]/(r/n)
A = 243.38[(1 + 0.055/12)^(12*38) - 1]/(0.055/12)
A = 243.38[1.93378208462 - 1]/(0.055/12)
A = 243.38[34.3478377249]
A = $8,351.53
Therefore, the value of Kearney's retirement savings when he retired was approximately $8,351.53.
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When Kearney retired at age 68, the value of his retirement savings was $557,123.35.
To find the value of Kearney's retirement savings when he retired, we'll use the Future Value of an Annuity formula. Here are the given values and the formula:
Monthly investment (PMT) = $200
Annual interest rate (r) = 5.5% = 0.055
Monthly interest rate (i) = (1 + r)^(1/12) - 1 ≈ 0.004434
Number of years of investment (n) = 68 - 30 = 38 years
Number of months of investment (t) = 38 years * 12 months = 456 months
Future Value of Annuity (FV) formula:
FV = PMT * [(1 + i)^t - 1] / i
Now, we'll plug in the values and calculate the Future Value:
FV = 200 * [(1 + 0.004434)^456 - 1] / 0.004434
FV ≈ 200 * [12.2883] / 0.004434
FV ≈ 557123.35
The value of his retirement savings was approximately $557,123.35.
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please answer the question attached brainliest to however answers first.
Step-by-step explanation:
number 2
number 3
number 6
number 7
[ ( -28 )-( +42)]-(+3) CUAL ES EL RESULTADO
ME DICEN
POR FIS AYUDA
ES PARA HOY
First, solve the expression inside the parentheses: (-28) - (+42) = -70
Next, subtract 3 from -70: -70 - (+3) = -73
What is the result of: [(-28) - (+42)] - (+3)?The given expression can be simplified as follows:
[( -28 )-( +42)]-(+3) = -28 - 42 - 3 = -73
So, the answer to the given expression is -73.
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A rectangular prism has a square
base with edge length (x + 1). Its
volume is (x + 1)2(x – 3). What
does the expression (x + 1)(x – 3)
represent?
area of the base
area of one side
height of the prism
surface area of the prism
The expression (x + 1)(x - 3) represents the Area of base of the prism.
What is Prism?a crystal is a polyhedron containing a n-sided polygon base, a respectable halfway point which is a deciphered duplicate of the first, and n different countenances, fundamentally all parallelograms, joining relating sides of the two bases. Translations of the bases exist in every cross-section that runs parallel to the bases.
According to question:The volume of a rectangular prism is given by the formula V = Bh, where B is the area of the base and h is the height of the prism. In this case, the base is a square with edge length (x + 1), so its area is (x + 1)^2. The volume of the prism is given as (x + 1)^2(x - 3).
We can find the height of the prism by dividing the volume by the area of the base:
B = V/h = (x + 1)^2(x - 3)/(x + 1) = (x + 1)(x - 3)
Therefore, the expression (x + 1)(x - 3) represents the Area of base of the prism.
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Mrs. jones buys two toys for her son. the probability that the first toy is defective is , and the probability that the second toy is defective given that the first toy is defective is . what is the probability that both toys are defective? a. b. c. d.
The probability of the first toy being defective is 1/3 and the probability of both toys being defective is 1/15.
Hence, option 'a'.
Use the concept of probability defined as:
Probability is equal to the percentage of positive outcomes compared to all outcomes for the occurrence of an event.
Given that,
Mrs. Jones buys her son two toys.
The probability that the initial plaything is broken = 1/3.
The probability that the second toy has a problem.,
Also given the original toy is defective, is 1/5.
The goal is to calculate the probability that both toys are defective.
To calculate the probability that both toys are defective:
Multiply the individual probabilities.
Given that the probability of the first toy being defective = 1/3,
The probability of the second toy being defective given that the first toy is defective= 1/5,
Calculate the probability that,
Both toys have flaws, multiplying these probabilities together:
(1/3) x (1/5) = 1/15
Hence,
The probability that both toys are defective is [tex]1/15[/tex] which is option 'a'.
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The complete question is:
Mrs. Jones buys two toys for her son. the probability that the first toy is defective is 1/3, and the probability that the second toy is defective given /that the first toy is defective is 1/5. what is the probability that both toys are defective?
a. 1/15
b. 1/4
c. 1/8
d. 3/5
it takes 17 seconds for a train to pass a 206-meter long bridge at normal speed. it takes 45 seconds for the same train to pass 170-meter long bridge at one-third of the normal speed. what is the length of the train in meters?
When a train takes 17 seconds to pass a 206-meter long bridge at normal speed. The length of train is equals to the 227.86 metres.
We have a train with a normal speed. With a normal speed, the length of long bridge covered by train in 17 seconds
= 206 meter
Let the length of train and normal speed of train be 'x meter' and 's m/sec ' respectively. As we know speed of an object ratio of covered distance to the time taken by object to covered the distance
=> s = (206 + x)/ 17 m/sec --(1)
In case second, the speed of same train which covered a length 170 m of bridge in 45 seconds = one-third of the normal speed
=> s/3 = (170 + x) /45 m/sec --(2)
We have to determine the length of train.
Using substitution, substitute value of s in equation(2) from equation (1) ,
=> (206+ x)/17 = (170 + x)/45
Cross multiplication
=> 45( 206 + x) = ( 170 + x) 17
=> 45 x - 17x = 45× 206 - 170 × 17
=> x = 227.86 m
Hence, required value is 227.86 m.
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C(x) - 1700 + 5x + 0.08x² + 0.0004x³. (a) Find the marginal cost function (b) Find C'(100) C'(100) What does this predict? The exact cost of the 101st pair of jeans The exact cost of the 100th pair of jeans The approximate cost of the 100th pair of jeans The approximate cost of the 101st pair of jeans The exact cast of the 99th pair of jeans. (c) Find the difference between C'(100) and the actual cost of manufacturing the 101st pair of jeans (Round your answer to two decimal places)
(a) The marginal cost function is C'(x) = 5 + 0.16x + 0.0012x².
(b) C'(100) = 21.00. This predicts the approximate cost of the 101st pair of jeans.
(c) The difference between C'(100) and the actual cost of manufacturing the 101st pair of jeans is $20.51.
(a) To find the marginal cost function, we need to take the derivative of the cost function C(x) with respect to x:
C'(x) = 5 + 0.16x + 0.0012x²
(b) To find C'(100), we substitute x = 100 into the marginal cost function:
C'(100) = 5 + 0.16(100) + 0.0012(100)²
C'(100) = 21.00
This predicts the approximate cost of the 101st pair of jeans, as the marginal cost function tells us the cost of producing one additional unit (pair of jeans) at a given quantity. So, we can use C'(100) to estimate the cost of producing the 101st pair of jeans.
To find the approximate cost of the 100th pair of jeans, we can substitute x = 100 into the cost function C(x):
C(100) = -1700 + 5(100) + 0.08(100)² + 0.0004(100)³
C(100) = $2330
So, the approximate cost of the 100th pair of jeans is $2330.
To find the approximate cost of the 101st pair of jeans, we can add C'(100) to the cost of producing 100 pairs of jeans:
C(100) + C'(100) = $2330 + $21.00
C(101) ≈ $2351
So, the approximate cost of the 101st pair of jeans is $2351.
To find the exact cost of the 99th pair of jeans, we can substitute x = 99 into the cost function C(x):
C(99) = -1700 + 5(99) + 0.08(99)² + 0.0004(99)³
C(99) = $2288.44
So, the exact cost of the 99th pair of jeans is $2288.44.
(c) To find the difference between C'(100) and the actual cost of manufacturing the 101st pair of jeans, we need to subtract the cost of producing 100 pairs of jeans from the cost of producing 101 pairs of jeans:
C(101) - C(100) = [-1700 + 5(101) + 0.08(101)² + 0.0004(101)³] - [-1700 + 5(100) + 0.08(100)² + 0.0004(100)³]
C(101) - C(100) = $20.51
So, the difference between C'(100) and the actual cost of manufacturing the 101st pair of jeans is $20.51.
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Pairs of twins are numbered 1, 1, 2, 2, 3, 3, and so on. They are seated
in a circle so that the least number of gaps between two twins always
equals their assigned number. This is called a twin circle. Note that this
means there is no person between the twins numbered 1 and 1, there is
just one person between the twins numbered 2 and 2, and so on.
Reflections (flips) and rotations (turns) of a twin circle are regarded as
the same. For example, the following are the same twin circles for 4
pairs of twins
a) Two different twin circles for five pair of twins are ( 5,2,4,2,3,5,4,3,1,1,3) and ( 3,1,1,3,4,5,3,2,4,2,5).
b) No twin circles in 3 pair of twins because any of arrangement of them cannot fulfil the condition of twin circle.
c) The partial twin circle ( third circle) present in above figure can't be completed because 4 positions are fixed there and after that number of persons more than seats.
We have a pair twins are numbered 1, 1, 2, 2, 3, 3, and so on. They all seated in a circle so that the least number of gaps between two twins always
equals their assigned number. This is called a twin circle. That is Number of persons between 1 and 1 twins = 0
Number of persons between 2 and 2 twins = 1,
so on.. Reflections (flips) and rotations (turns) of a twin circle are regarded as the same.
a) We have to make two twin circles for five pair twins. The arrangement of pair twins in two different ways with the satisfaction of conditions. So, first arrangement is ( 5,2,4,2,3,5,4,3,1,1,3) and
other arrangement is ( 3,1,1,3,4,5,3,2,4,2,5).
b) There is no twin circle between the arrangement of 3 twin pairs. Because in case of 3 twin pair total members = 3×2 = 6 and number of members can be seat between pairs are 3( 1+2+0). As we know, it is fixed that no person between (1,1). So, we cannot be arrange the 2 pairs with desirable 3 gaps that is 1 person between (2,2) and 2 persons between (3,3).
c) There is total 12 positions to seat in circles. The position of 6 and 1 is fixed. According to above scenario, position next to 1 is for 1 (clockwise) and 5th position from given 1 position in (clockwise) is other member of twin 6. Now, four positions are fixed. Eight positions are left and 4 twin pairs (2,2) , (3,3), (4,4),(5,5). Number of persons seat between 4 pairs are 10 in counts ( greater than position ) so, no such arrangement is possible. Hence, this partial circle can't be completed.
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Complete question:
The above figure complete question.
Pairs of twins are numbered 1, 1, 2, 2, 3, 3, and so on. They are seated in a circle so that the least number of gaps between two twins always
equals their assigned number. This is called a twin circle. Note that this means there is no person between the twins numbered 1 and 1, there is just one person between the twins numbered 2 and 2, and so on. Reflections (flips) and rotations (turns) of a twin circle are regarded as the same. For example, the following are the same twin circles for 4 pairs of twin.
a) Find two twin circles for five pairs of twin
b) Explain why no twin circles in 3 pairs of twin
c) explain why this partial twin circle can't be completed ? ( third circle)
Using the change-base formula, which of the following is equivalent to the logarithmic expression below?
log7 18
The logarithmic expression log7 18 is equivalent to log 18 / log 7 using the change-base formula.
The change-base formula states that the logarithm of a number to a certain base can be converted to the logarithm of the same number to a different base by dividing the logarithm of the number to the first base by the logarithm of the number to the second base.
In this case, we want to convert log7 18 to a logarithm with base 10. Therefore, using the change-base formula, we can write:
log7 18 = log 18 / log 7
Using a calculator, we can evaluate the right-hand side of the equation to get:
log7 18 = 1.2553 / 0.8451
log7 18 = 1.4845 (rounded to four decimal places)
Therefore, the logarithmic expression log7 18 is equivalent to log 18 / log 7, which is approximately equal to 1.4845.
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A musician charges C (x) = 64x + 20,000 where x is the total - number of attendees at the concert. The venue charges $80 per ticket. After how many people buy tickets does the venue break even, and what is the value of the total tickets sold at that point?
The venue breaks even when 1,250 people buy tickets, and the total value of tickets sold at that point is $100,000.
To find the break-even point for the venue, we need to set the musician's charges (C(x) = 64x + 20,000) equal to the venue's earnings from ticket sales ($80 per ticket). Hence,
1. Set the musician's charges equal to the venue's earnings:
64x + 20,000 = 80x
2. Subtract 64x from both sides:
20,000 = 16x
3. Divide both sides by 16:
x = 1,250
At the break-even point, 1,250 people need to buy tickets. To find the value of the total tickets sold at this point:
1. Multiply the number of attendees (x) by the ticket price:
Total ticket sales = x * ticket price
2. Substitute the values:
Total ticket sales = 1,250 * $80
3. Calculate the total ticket sales:
Total ticket sales = $100,000
So, the breaks even point is 1,250 people buying tickets, and corresponding total value of tickets sold is $100,000.
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Optimize: e-222-4xy-2y2 (1 point) Consider the optimization problem: Subject to 0x2 – 4xy + ly2 = 10 The method of Lagrange gives a system of three equations in three unknowns that you must solve to find the critical points. Write out those three equations (in any order). Use an l' in place of the usual .. =
To optimize the given function e - 222 - 4xy - 2y^2 subject to the constraint 0x^2 - 4xy + ly^2 = 10, we'll first set up the Lagrange function L(x, y, λ) as follows:
Langrange- L(x, y, λ) = e - 222 - 4xy - 2y^2 + λ(0x^2 - 4xy + ly^2 - 10)
Now, we'll get the partial derivatives of L with respect to x, y, and λ and set them equal to zero:
Step:1. ∂L/∂x = -4y - λ(-4y) = 0
Step:2. ∂L/∂y = -4x - 4y - 2λy = 0
Step:3. ∂L/∂λ = 0x^2 - 4xy + ly^2 - 10 = 0
These three equations represent the system of equations we need to solve to find the critical points. To reiterate, the equations are:
1. -4y + 4yλ = 0
2. -4x - 4y - 2λy = 0
3. -4xy + ly^2 - 10 = 0
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Brian has two rectangular sheets of paper.
The length of the larger sheet is 12 times the length of the
smaller sheet.
The width of the larger sheet is 15 times the width of the
smaller sheet.
By what factor is the area of the larger sheet greater than the area of the
smaller sheet?
The area of the larger sheet is 180 times greater than the area of the smaller sheet.
How to find the area of sheets?To determine which sheet has a larger area, Let's assume that the length of the smaller sheet of paper is l and the width of the smaller sheet is w. Then, we can express the dimensions of the larger sheet in terms of l and w as follows:
Length of larger sheet = 12l
Width of larger sheet = 15w
The area of the smaller sheet can be calculated as:
Area of smaller sheet = length × width = lw
Similarly, the area of the larger sheet can be calculated as:
Area of larger sheet = length × width = (12l) × (15w) = 180lw
To find the factor by which the area of the larger sheet is greater than the area of the smaller sheet, we can divide the area of the larger sheet by the area of the smaller sheet:
Factor = Area of larger sheet / Area of smaller sheet
Factor = (180lw) / (lw)
Simplifying the expression, we get:
Factor = 180
Therefore, the area of the larger sheet is 180 times greater than the area of the smaller sheet.
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Dado un triángulo equilatero de lado 4cm, calcula su altura. encuentra su área
The height of the triangle is given as follows:
[tex]h = 2\sqrt{3}[/tex] cm.
The area of the triangle is given as follows:
[tex]A = 4\sqrt{3}[/tex] cm².
What is the Pythagorean Theorem?The Pythagorean Theorem states that in a right-angled triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.
The theorem is expressed as follows:
c² = a² + b².
In which:
c is the length of the hypotenuse.a and b are the lengths of the other two sides (the legs) of the right-angled triangle.Considering an equilateral triangle, in which all the side lengths are of 4, we have a right triangle in which:
The sides are 2 cm and the height h.The hypotenuse is of 4 cm.Hence the height is obtained as follows:
h² + 2² = 4²
h² = 12
[tex]h = \sqrt{3 \times 4}[/tex]
[tex]h = 2\sqrt{3}[/tex] cm
The area of a triangle is given as half the multiplication of the base and of the height, hence:
[tex]A = 0.5 \times 4 \times 2 \sqrt{3}[/tex]
[tex]A = 4\sqrt{3}[/tex] cm².
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Consider the diagram shown. The sphere and cylinder have the same diameter. The height of the
cylinder is equal to the diameter of the sphere.
Find the approximate volume of the sphere by using 3.14 for 7. Round to the nearest tenth
of a cubic unit.
8.4
8.4
Answer:
310.2 cubic units
Step-by-step explanation:
since we know the diameter of the sphere (8.4), the radius is [tex]8.4/2 = 4.2[/tex]
The volume of a sphere is [tex]\frac{4}{3}\pi r^3[/tex]
Plugging in 3.14 as [tex]\pi[/tex] and 4.2 as r, we get 310.2
We have a dataset measuring the average weight of apples in Walmart. We randomly weighed 200 apples among all of them, 120 apples have weight larger than 100 grams. Wal- mart want to perform a null hypothesis that the true proportion of apple weights larger than 100 grams is 0. 5. And the alternative hypothesis is that the proportion is larger than 0. 5. Find the p-value of the hypothesis testing
The p-value for the hypothesis test is approximately 0.000006.
To find the p-value, we follow these steps:
1. State the null hypothesis (H0) and alternative hypothesis (H1):
H0: p = 0.5
H1: p > 0.5
2. Calculate the sample proportion (p-hat): p-hat = 120/200 = 0.6
3. Calculate the test statistic (z) using the formula: z = (p-hat - p) / √((p * (1 - p)) / n)
z = (0.6 - 0.5) / √((0.5 * 0.5) / 200) ≈ 2.683
4. Find the corresponding p-value using a z-table or calculator. The area to the right of the test statistic (2.683) is approximately 0.000006.
Since the p-value (0.000006) is less than the significance level (typically 0.05), we reject the null hypothesis, indicating that the true proportion of apple weights larger than 100 grams is larger than 0.5.
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3 3/4 converted from feet to yards
Answer: 1 1/4 yards
Step-by-step explanation: To convert from feet to yards, divide the value in feet by 3. So, 3 3/4 ft = (3 3/4)/3 = 1.25 yd (exactly).
Answer:
5/4 yards
Step-by-step explanation:
Convert feet to fraction.
[tex]3+\frac{3}{4} =\frac{(3)(4)+3}{4} =\frac{15}{4}[/tex] ft.
If we know that each yard equals 3 feet, divide by 3:
[tex]\frac{\frac{15}{4} }{3} =\frac{15}{(4)(3)} =\frac{15}{12}[/tex]
Simplified:
[tex]\frac{5}{4}[/tex] yards
Hope this helps.
A random sample of small business stock prices has a sample mean of x¯=$54. 82 and sample standard deviation of s=$8. 95. Use the Empirical Rule to estimate the percentage of small business stock prices that are more than $81. 67. Round your answer to the nearest hundredth
Using the Empirical Rule. The percentage of small business stock prices that are more than $81. 67 is 0.30%
To use the Empirical Rule, we need to assume that the distribution of small business stock prices is approximately normal.
First, we need to find the z-score for $81.67:
z = (81.67 - 54.82) / 8.95 = 2.99
Next, we can use the Empirical Rule to estimate the percentage of small business stock prices that are more than $81.67:
About 99.7% of the data falls within 3 standard deviations of the mean.
Therefore, about 0.3% of the data falls more than 3 standard deviations above the mean.
Since $81.67 is more than 3 standard deviations above the mean, we can estimate that the percentage of small business stock prices that are more than $81.67 is about 0.3%.
Rounded to the nearest hundredth, the estimated percentage is 0.30%.
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Roxie plans on purchasing a new desktop computer for $1250. Which loan description would result in the smallest amount of interest she would have to pay?
12 months at 6. 25% annual simple interest rate
18 months at 6. 75% annual simple interest rate
24 months at 6. 5% annual simple interest rate
30 months at 6. 00% annual simple interest rate
For a purchase of a new desktop computer for $1250, loan description that would result in the smallest amount of interest she would have to pay is 12 months at 6. 25% annual simple interest rate. Therefore, the correct option is option 1.
To determine which loan description results in the smallest amount of interest for Roxie, we'll calculate the interest for each option using the simple interest formula:
Interest = Principal × Rate × Time.
1. 12 months at 6.25% annual simple interest rate:
Interest = $1250 × 6.25% × (12/12)
Interest = $1250 × 0.0625 × 1
Interest = $78.13
2. 18 months at 6.75% annual simple interest rate:
Interest = $1250 × 6.75% × (18/12)
Interest = $1250 × 0.0675 × 1.5
Interest = $126.56
3. 24 months at 6.5% annual simple interest rate:
Interest = $1250 × 6.5% × (24/12)
Interest = $1250 × 0.065 × 2
Interest = $162.50
4. 30 months at 6.00% annual simple interest rate:
Interest = $1250 × 6.00% × (30/12)
Interest = $1250 × 0.06 × 2.5
Interest = $187.50
Comparing the interest amounts, the smallest interest is for the first option, 12 months at 6.25% annual simple interest rate, with an interest amount of $78.13.
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WILL MARK BRAINLIEST QUESTION IN PHOTO
Step-by-step explanation:
See image....check my math ! ( I didn't)