Answer: 77
Step-by-step explanation:
Bigger Rectangle = LW = 5x5 =25 There are 2 of those. =50
middl rectangle = LW = 5x3=15
triangles= 1/2 b h = 1/2 (3)(4) = 6 but therere are 2 so =12
Add up all shapes=50+15+12=77
A pair of dice is tossed. Find the probability that the sum on the 2 dice is 4, given that doubles are rolled. (Enter your probability as a fraction.)
Answer:
1/6
Step-by-step explanation:
The area of a rectangle park is 53 square mile. The length of the park is 87 mile. What is the width of the park? URGENTTT PLS ANSWER STEP BY STEP
These cones are similar. find the volume
of the smaller cone. round to the
nearest tenth.
2cm 3 cm
volume = [ ? ] cm3
volume = 66 cm3
The volume of the smaller cone is approximately [tex]5.5 cm^3[/tex], rounded to the nearest tenth
If the cones are similar, then the ratio of the corresponding dimensions of the cones is the same.
Let's denote the height and radius of the smaller cone as h and r, respectively. Then, the height and radius of the larger cone are 3h and 2r, respectively.
Since the volumes of the cones are proportional to the cube of their radii and heights, we can write:
(volume of smaller cone) / (volume of larger cone) = [tex](r^2 * h) / ((2r)^2 * 3h)[/tex]
Simplifying this expression, we get:
(volume of smaller cone) / (volume of larger cone) = 1/12
Since we are given that the volume of the larger cone is [tex]66 cm^3[/tex], we can solve for the volume of the smaller cone as follows:
(volume of smaller cone) =[tex](1/12) * (66 cm^3) = 5.5 cm^3[/tex]
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There's a roughly linear relationship between the length of someone's femur (the long leg-bone in your thigh) and their expected height. Within a certain population, this relationship can be expressed using the formula h=62. 6+2. 35fh=62. 6+2. 35f, where hh represents the expected height in centimeters and ff represents the length of the femur in centimeters. What is the meaning of the hh-value when f=49f=49?
For an individual with a femur length of 49 centimeters, we can expect their height to be approximately 177.15 centimeters.
When f=49, plugging it into the formula h=62.6+2.35f, we get h=62.6+2.35(49)=177.15.
This means that for an individual with a femur length of 49 centimeters, we would expect their height to be approximately 177.15 centimeters.
This provides an estimate of the individual's height based on the relationship between femur length and height indicated by the formula. It's important to note that this is an estimate and individual variation may exist.
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The function C (t) = 60 + 24t is used to find the total cost (in dollars) of renting an industrial cleaning unit for thours.
What does C (12) represent?
The cost at half the hourly rate
The cost of renting the unit for 12 days
The cost of renting the unit for 12 hours
Twelve times the cost of renting the unit for 1 hour
C(12) represents the total cost (in dollars) of renting the industrial cleaning unit for 12 hours.
How to find the representation of function?The problem gives us a function C(t) = 60 + 24t, where t represents the number of hours that an industrial cleaning unit is rented for. The function tells us that the total cost (in dollars) of renting the unit is equal to $60 plus $24 per hour.
Now, we are asked to find what C(12) represents. To do so, we substitute t = 12 into the function, which gives us:
C(12) = 60 + 24(12)
We can simplify this expression by multiplying 24 by 12, which gives us:
C(12) = 60 + 288
Adding 60 and 288 together, we get:
C(12) = 348
So, C(12) represents the total cost (in dollars) of renting the industrial cleaning unit for 12 hours. Therefore, the correct answer to the question is: The cost of renting the unit for 12 hours.
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Recent studies show that the number of three-legged frogs in a particular area is increasing due to exposure to chemical pollutants. The first set of data reported in 2000 estimates a population of 5000 three-legged frogs. Statistics show an annual increase of 15%. Let denote the number of three-legged frogs projected to inhabit this area in the year 2000N. How many three-legged frogs are projected to inhabit this area by 2009? Round to the nearest whole number
By 2009, it is projected that approximately 13,956 three-legged frogs will inhabit the area.
Recent studies have indicated a growing concern for the population of three-legged frogs in a specific area, as they have been exposed to chemical pollutants. In the year 2000, data estimated that there were about 5,000 three-legged frogs (N) in this area. With an annual increase of 15%, we can project the number of frogs in future years using the formula:
Future population = N * (1 + growth rate) ^ number of years
In this case, we want to determine the number of three-legged frogs in the area by 2009. To calculate this, we will use the given values:
Future population = 5,000 * (1 + 0.15) ^ (2009 - 2000)
Future population = 5,000 * (1.15)⁹
Future population ≈ 13,956
Therefore, by 2009, it is projected that approximately 13,956 three-legged frogs will inhabit the area, rounding to the nearest whole number. This increase in population highlights the potential ecological consequences of chemical pollutants on the environment and the need for further investigation and mitigation measures.
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Lana plotted 3 vertices of a square on a coordinate plane. Which are the coordinates of the missing vertex of Lana's square?
These values (x4, y4) represent the coordinates of the missing vertex of Lana's square.
Find out the coordinates of the missing vertex?To determine the missing vertex of Lana's square, we need to know the location of the three given vertices. Let's assume that Lana plotted the vertices in a clockwise direction, starting from the top left.
If we denote the coordinates of the first vertex as (x1, y1), the second vertex as (x2, y2), and the third vertex as (x3, y3), then the coordinates of the missing vertex can be found as follows:
1. Calculate the distance between the first and second vertices:
d1 = sqrt((x2 - x1)^2 + (y2 - y1)^2)
2. Calculate the distance between the second and third vertices:
d2 = sqrt((x3 - x2)^2 + (y3 - y2)^2)
If the square is regular (i.e., all sides are of equal length), then d1 = d2. Otherwise, the shape is not a square.
3. Calculate the midpoint between the first and second vertices:
xm = (x1 + x2) / 2
ym = (y1 + y2) / 2
4. Calculate the vector that goes from the midpoint to the third vertex:
vx = x3 - xm
vy = y3 - ym
5. Calculate the coordinates of the missing vertex by adding the vector to the midpoint:
x4 = xm + vx
y4 = ym + vy
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Bus stops A, B, C, and D are on a straight road. The distance from A to D is exactly 1 km. The distance from B to C is 2 km. The distance from B to D is 3 km, the distance from A to B is 4 km, and the distance from C to D is 5 km. What is the distance between stops A and C? AC=_ km
The distance between bus stops A and C is exactly 1 km.
To find the distance between bus stops A and C, we can use the fact that the distance from A to D is 1 km and the distance from C to D is 5 km.
This means that the total distance from A to C, passing through D, is 6 km (1 km + 5 km).
However, we need to subtract the distance between B and D (3 km) and the distance between B and C (2 km) since we don't want to double count the stretch between B and D.
Therefore, the distance between A and C is 6 km - 3 km - 2 km = 1 km.
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PLEASE HELP!! How can you find the annual percentage rate (APR) of a loan if you know the number of monthly payments and the finance charge per $100? What does knowing the APR allow you to do?
APR is obtained by dividing the finance charge for the loan by the total amount borrowed, given by this formula APR = ((F / P) x 12) x 100
What is the annual percentage rate?The formula for APR (annual percentage rate) is given as;
APR = ((F / P) x 12) x 100
Where;
F is the finance charge for the loanP is the total amount borrowed12 represents the number of months in a yearThe annual percentage rate (APR) of a loan if you know the number of monthly payments and the finance charge per $100, is calculated as follows;
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colleen's photo is 9 inches long and 7 inches wide. is it larger or smaller than ali's photo? explain how you know.
By calculations, Colleen's photo is smaller than Ali's photo
Determining if Colleen's photo larger or smaller than Ali's photo?From the question, we have the following parameters that can be used in our computation:
Area of Ali's photo = 91 square inches.
For Colleen's photo, we have
9 inches by 7 inches
This means that
Area of Colleen's photo = 9 * 7 square inches.
Evaluate
Area of Colleen's photo = 63 square inches.
63 square inches is lesser than 91 square inches
This means that Colleen's photo is smaller than Ali's photo
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Asap!!!! Solve the equation for v. v over 8 minus 4 equals negative 12 (18 points)
v = -128
v = -64
v = 16
v = 92
Answer:
v = -64
Step-by-step explanation:
First, you add 4 to both sides to isolate the variable term:
v/8 = -8
Next, you multiply both sides by 8 to isolate the variable on one side:
v = -64
So, the solution to the equation v/8 - 4 = -12 is v = -64.
"Apply any appropriate Testing Method to:
[infinity]X
n=1
(−1)narctan n
n^2"
To test the convergence of the given infinite series, we can use the Alternating Series Test. The series is in the form: Σ((-1)^n * (arctan(n)/n^2)), for n = 1 to infinity.
The Alternating Series Test requires two conditions to be met:
1. The absolute value of the terms in the series must be decreasing: |a_n+1| ≤ |a_n|.
2. The limit of the terms in the series as n approaches infinity must be zero: lim (n→∞) |a_n| = 0.
For the given series, let's check these conditions: 1.The absolute value of the terms: |arctan(n)/n^2|. Since arctan(n) increases with n and n^2 increases faster than arctan(n), the ratio (arctan(n)/n^2) decreases as n increases. Therefore, this condition is met.
2. Now, we need to check the limit: lim (n→∞) |arctan(n)/n^2|. As n approaches infinity, the arctan(n) approaches π/2, and n^2 approaches infinity.
Therefore, the limit is (π/2)/∞ = 0, so the second condition is also met. Since both conditions are met, the Alternating Series Test confirms that the given series converges.
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"Complete question"
Apply Any Appropriate Testing Method To: ∞X N=1 (−1)Narctan N N2
Apply any appropriate Testing Method to:
∞X
n=1
(−1)narctan n
n2
Penelope invested $89,000 in an account paying an interest rate of 6 1/4% compounded continuously. Samir invested $89,000 in an account paying an interest rate of 6⅜% compounded monthly. To the nearest hundredth of a year, how much longer would it take for Samir's money to double than for Penelupe's money to double?
Answer: -10.57
Step-by-step explanation:
Answer:
0.25 years
Step-by-step explanation:
Penelope invested $89,000 in an account paying an interest rate of 6⅜% compounded continuously.
To calculate the time it would take Penelope's money to double, use the continuous compounding interest formula.
[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Continuous Compounding Interest Formula}\\\\$ A=Pe^{rt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\\phantom{ww}$\bullet$ $P =$ principal amount \\\phantom{ww}$\bullet$ $e =$ Euler's number (constant) \\\phantom{ww}$\bullet$ $r =$ annual interest rate (in decimal form) \\\phantom{ww}$\bullet$ $t =$ time (in years) \\\end{minipage}}[/tex]
As the principal amount is doubled, then A = 2P.
Given interest rate:
r = 6.375% = 0.06375Substitute A = 2P and r = 0.06375 into the continuous compounding interest formula and solve for t:
[tex]\implies 2P=Pe^{0.06375t}[/tex]
[tex]\implies 2=e^{0.06375t}[/tex]
[tex]\implies \ln 2=\ln e^{0.06375t}[/tex]
[tex]\implies \ln 2=0.06375t\ln e[/tex]
[tex]\implies \ln 2=0.06375t(1)[/tex]
[tex]\implies \ln 2=0.06375t[/tex]
[tex]\implies t=\dfrac{\ln 2}{0.06375}[/tex]
[tex]\implies t=10.872896949...[/tex]
Therefore, it will take 10.87 years for Penelope's investment to double.
[tex]\hrulefill[/tex]
Samir invested $89,000 in an account paying an interest rate of 6¹/₄% compounded monthly.
To calculate the time it would take Samir's money to double, use the compound interest formula.
[tex]\boxed{\begin{minipage}{8.5 cm}\underline{Compound Interest Formula}\\\\$ A=P\left(1+\frac{r}{n}\right)^{nt}$\\\\where:\\\\ \phantom{ww}$\bullet$ $A =$ final amount \\ \phantom{ww}$\bullet$ $P =$ principal amount \\ \phantom{ww}$\bullet$ $r =$ interest rate (in decimal form) \\ \phantom{ww}$\bullet$ $n =$ number of times interest is applied per year \\ \phantom{ww}$\bullet$ $t =$ time (in years) \\ \end{minipage}}[/tex]
As the principal amount is doubled, then A = 2P.
Given values:
A = 2PP = Pr = 6.25% = 0.0625n = 12 (monthly)Substitute the values into the formula and solve for t:
[tex]\implies 2P=P\left(1+\dfrac{0.0625}{12}\right)^{12t}[/tex]
[tex]\implies 2=\left(1+\dfrac{0.0625}{12}\right)^{12t}[/tex]
[tex]\implies 2=\left(1+0.005208333...\right)^{12t}[/tex]
[tex]\implies 2=\left(1.005208333...\right)^{12t}[/tex]
[tex]\implies \ln 2=\ln \left(1.005208333...\right)^{12t}[/tex]
[tex]\implies \ln 2=12t \ln \left(1.005208333...\right)[/tex]
[tex]\implies t=\dfrac{\ln 2}{12 \ln \left(1.005208333...\right)}[/tex]
[tex]\implies t=11.1192110...[/tex]
Therefore, it will take 11.12 years for Samir's investment to double.
[tex]\hrulefill[/tex]
To calculate how much longer it would take for Samir's money to double than for Penelope's money to double, subtract the value of t for Penelope from the value of t for Samir:
[tex]\begin{aligned}\implies t_{\sf Samir}-t_{\sf Penelope}&=11.1192110......-10.872896949...\\&= 0.246314066...\\&=0.25\; \sf years\;(nearest\;hundredth)\end{aligned}[/tex]
Therefore, it would take 0.25 years longer for Samir's money to double than for Penelope's money to double.
A point is dilated by a scale factor of 1/3 centered about the origin resulting in the new coordinates (-6,3). what are the coordinates of the point prior to the dilation
The coordinates of the point prior to the dilation are (-2,-1) when the Scale factor is 1/3 and the new coordinates are (-6,3).
To find the coordinates of the point prior to the dilation, we need to use the formula for dilation:
(x’, y’) = (k x, ky)
where
(x’, y’) = the new coordinates
(x, y) = original coordinates
k = scale factor
Given data:
Scale factor = 1/3
New coordinates = (-6, 3)
By substuting the values in the equation we get:
(-6, 3) = (k x, ky)
Solving for x and y:
k x = -6
ky = 3
Dividing the ky equation by the k x equation we get:
y/x = 3/-6
y/x = -1/2
From the above equation, we can assume that x = 2 and y = -1.
Therefore, the coordinates of the point prior to the dilation are (-2,-1).
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This scatter plot shows the relationship between the number of sweatshirts sold and the temperature outside. Sweatshirt Sales vs. Temperature Sweatshirts Sold 300 250 200 150 100- 50- 0 10 20 Temperature (°F) 30 40 50 The y-intercept of the estimated line of best fit is at (0, b). Enter the approximate value of the b in the first response box. Enter the approximate slope of the estimated line of best fit in the second response box. y-intercept and slope
Answer:
The y intercept of the scatterplot is 250 sweat shirts and the slope is 10/3
What is a linear function?
y = mx + b
where m is the rate of change and b is the y intercept.
Let y represent the number of sweat shirts sold and x represent the temperature.
The y intercept is at (0,250).
Using point (0,250) and (14,200):
Slope = (200-250) / (15-0) = 10/3
The y intercept of the scatter plot is 250 sweat shirts and the slope is (10/3)
GEOMETRY HELP COSINE, SINE TANGENT
please help y’all i have no idea what i am doing
Find the critical value t Subscript c for the confidence level c=0.90. and sample size n=26
The critical value t Subscript c for a confidence level of 0.90 and sample size of 26 is 1.708. A t-value greater than or less than 1.708 in absolute value would lead to rejection of the null hypothesis at the 0.10 level of significance.
To find the critical value t Subscript c for the confidence level c=0.90 and sample size n=26, we can use a t-distribution table or calculator.
Since we have a sample size of n=26, we have n-1 = 25 degrees of freedom. Using a t-distribution table or calculator with 25 degrees of freedom and a confidence level of 0.90, we get
t Subscript c = 1.708
Therefore, the critical value t Subscript c for the confidence level c=0.90 and sample size n=26 is 1.708. This means that if we calculate the t-value from our sample data and it is greater than or less than 1.708 in absolute value, we can reject the null hypothesis at the 0.10 level of significance.
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Solve this for me. In a office,2/3 of the water bill is paid by yaw,1/5 by kwame and remaining by aba. What fraction is paid by aba
the attendance at a school festival was 786 on Friday night,908 on Sunday, and 812 on Sunday. What was the total attendance?
Answer: 2,506 people
Step-by-step explanation:
786 + 908 + 812 = 2,506 people
If the cube is divided into two equal parts by a plane parallel to the face defined by vertices 2, 3, 6, and 7, what will be the area of the cross-section?
A.
48 sq cm
B.
256 sq cm
C.
16 sq cm
The area of the cross-section is 16 sq. cm. Thus, option C is the correct answer.
Vertices sides = 2, 3, 6, and 7
Divide part face = parallel to the face of vertices
It is given that a square face is present in the middle of the cube. The area of the cross-section of the cube results from the plane and cube intersection.
To find the distance between the square face of the cube and the length of the side:
distance = [tex]\sqrt{[(x^{2} - x1)^2 + (y^{2} - y1)^2 + (z^{2} - z1)^2]}[/tex]
we can use the coordinates of any two adjacent sides to find the distance.
distance = [tex]\sqrt{[(3-2)^2 + (3-2)^2 + (3-1)^2] }[/tex]
distance = [tex]\sqrt{11}[/tex]
To calculate the area of the face of the cube:
area = [tex]side^{2}[/tex]
area = [tex]\sqrt{(11)^2}[/tex]
area = 11
The area of the cross-section can be estimated as:
area = (1/2) x 11 x 4) + 5 vertices of plane
area = 16 sq. cm
Therefore we can infer that the area of the cross-section is 16 sq. cm
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The number of newly reported crime cases in a county in New York State is shown in the accompanying table, where x represents the number of years since 1995, and y represents number of new cases. Write the linear regression equation that represents this set of data, rounding all coefficients to the nearest hundredth. Using this equation, estimate the calendar year in which the number of new cases would reach 1282.
The nearest year, we can estimate that the number of new cases would reach 1282 in the year 2017.
Find the linear regression equation and estimate the year when the number of new cases would reach 1282 for a county in New York state, given the accompanying table.
To find the linear regression equation, we need to use the formula:
y = a + bx
where y is the number of new cases, x is the number of years since 1995, a is the y-intercept and b is the slope of the line.
Using the given data, we can find the values of a and b using the formulas:
b = (nΣxy - ΣxΣy) / (nΣ[tex]x^2[/tex] - (Σx)[tex]^2)[/tex]
a = (Σy - bΣx) / n
where n is the number of data points, Σxy is the sum of the products of x and y, Σx is the sum of x, Σy is the sum of y, and Σ[tex]x^2[/tex] is the sum of squares of x.
Using these formulas and the given data, we get:
n = 9
Σx = 36
Σy = 7386
Σx^2 = 162
Σxy = 3330
b = (93330 - 367386) / (9*162 - 36^2) ≈ -75.44
a = (7386 - (-75.44)*36) / 9 ≈ 2612.67
Therefore, the linear regression equation is:
y ≈ 2612.67 - 75.44x
To estimate the year in which the number of new cases would reach 1282, we can substitute y = 1282 into the equation and solve for x:
1282 ≈ 2612.67 - 75.44x
75.44x ≈ 2612.67 - 1282
x ≈ 22.36
This means that the number of new cases would reach 1282 approximately 22.36 years after 1995. Adding this to 1995 gives us an estimate of the calendar year:
1995 + 22.36 ≈ 2017.36
Rounding to the nearest year, we can estimate that the number of new cases would reach 1282 in the year 2017.
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Find the zeros of each quadratic equation below by graphing.
Pls I need help
The zeros of the quadratic equation are as follows
1. y = -x²+ 6x - 5:
zeros: (1, 0) and (5, 0)
2. y = x² + 2x + 1:
zeros: (-1, 0).
3. y = -x²+ 8x - 17:
zeros: (0, 0) and (0, 0)
4. y = x² - 4:
zeros: (1, 0) and (5, 0)
What is zero of a quadratic equation?Zero in a quadratic equation are x values that make the equation equal to zero. In other words, they are the x-intercepts or roots of a quadratic function.
Using graphical method, a zero is the point of intersection of the curve with the x -axis and this is shown in the graph attached.
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I need help also please explain as you go a long.
Given the expression: 5x10 − 80x2
Part A: Rewrite the expression by factoring out the greatest common factor. (4 points)
Part B:Factor the entire expression completely. Show the steps of your work. (6 points)
The entire expression is factored completely as: 5x2(x4 + 4)(x2 + 2)(x2 - 2)
Part A:
To factor out the greatest common factor, we need to find the largest number that divides evenly into both terms. In this case, the greatest common factor is 5x2.
5x10 − 80x2
= 5x2 (x8 - 16)
Therefore, we can rewrite the expression as 5x2(x8 - 16).
Part B:
To factor the entire expression completely, we need to use the difference of squares formula, which states that:
a2 - b2 = (a + b)(a - b)
In this case, we can rewrite the expression as:
5x2(x8 - 16) = 5x2[(x4)2 - (4)2]
Notice that x8 can be rewritten as (x4)2, and 80 can be factored into 4 x 20, which gives us 16 when squared.
Using the difference of squares formula, we can factor the expression further:
5x2[(x4 + 4)(x4 - 4)]
The expression (x4 + 4) cannot be factored further, but (x4 - 4) can be factored using the difference of squares formula again:
5x2[(x4 + 4)(x2 + 2)(x2 - 2)]
Therefore, the entire expression is factored completely as: 5x2(x4 + 4)(x2 + 2)(x2 - 2)
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One of the teachers at a school is chosen at random. The probability that this teacher is female is 3/5 There are 36 male teachers at the school
If the probability that this teacher is female is 3/5 , there are a total of 90 teachers at the school.
Let's denote the total number of teachers at the school as T. We know that the probability of choosing a female teacher is 3/5. Therefore, the probability of choosing a male teacher is 1 - 3/5 = 2/5.
We are also given that there are 36 male teachers at the school. We can use this information to set up an equation:
36/T = 2/5
To solve for T, we can cross-multiply:
36 x 5 = 2 x T
180 = 2T
T = 90
Therefore, there are a total of 90 teachers at the school.
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Complete question is:
One of the teachers at a school is chosen at random. The probability that this teacher is female is 3/5 There are 36 male teachers at the school. Work out the total number of teachers at the school.
The slant height if the cone is 13 cm. What is the volume of a cone having a radius of 5 cm and a slant height of 13 cm.
Thus, the volume of cone for the given slant height and radius is found as: 314 cu. cm.
Explain about the slant height of cone:The distance from a cone's apex to its outer rim is referred to as the segment's slant height. It is corresponding to the hypotenuse's length of a right triangle that creates the cone.
Given data:
slant height of cone l = 13 cm
radius r = 5 cm
Let h be the height
So, using Pythagorean theorem, find height.
l² = h² + r²
h² = l² - r²
h²= 13² - 5²
h² = 169 - 25
h = 12 cm
volume of a cone = 1/3 *π*r²*h
volume of a cone = 1/3 *3.14*5²*12
volume of a cone = 3.14*25*4
volume of a cone = 314 cu. cm
Thus, the volume of cone for the given slant height and radius is found as: 314 cu. cm.
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Lamarr has budgeted $35 from his summer job earnings to buy shorts and socks for
soccer. he needs 5 pairs of socks and a pair of shorts. the socks cost different
amounts in different stores. the shorts he wants cost $19.95.
a. let x represent the price of one pair of socks. write an expression for the total cost
of the socks and shorts.
b. write and solve an equation that says that lamarr spent exactly $35 on the socks
and shorts.
c. list some other possible prices for the socks that would still allow lamarr to stay
within his budget.
d. write an inequality to represent the amount lamarr can spend on a single pair of
socks.
Lamar can spend at most $3.01 on a single pair of socks to stay within his budget.
a. The total cost of the socks and shorts can be represented by the expression:
Total cost = Cost of shorts + Cost of 5 pairs of socks
= $19.95 + 5x
where x is the price of one pair of socks.
b. To write an equation that says Lamar spent exactly $35 on the socks and shorts, we can equate the total cost expression to $35:
$19.95 + 5x = $35
To solve for x, we can first subtract $19.95 from both sides:
5x = $15.05
Then, divide both sides by 5:
x = $3.01
So, Lamar spent $19.95 + 5($3.01) = $35 on the socks and shorts.
c. Other possible prices for the socks that would still allow Lamar to stay within his budget of $35 can be found by plugging in values of x that satisfy the inequality:
Cost of 5 pairs of socks = 5x ≤ $15.05
For example, if the socks cost $2.99 per pair, then the total cost would be:
$19.95 + 5($2.99) = $34.90
which is within Lamar's budget.
d. We can write an inequality to represent the amount Lamar can spend on a single pair of socks as:
x ≤ (35 - 19.95)/5
This simplifies to:
x ≤ $3.01
So, Lamar can spend at most $3.01 on a single pair of socks to stay within his budget.
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Problem
Yoshi is a basketball player who likes to practice by attempting the same three-point shot until he makes the shot. His past performance indicates that he has a
30
%
30%30, percent chance of making one of these shots. Let
X
XX represent the number of attempts it takes Yoshi to make the shot, and assume the results of each attempt are independent.
Is
X
XX a binomial variable? Why or why not?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
Each trial isn't being classified as a success or failure, so
X
XX is not a binomial variable.
(Choice B)
B
There is no fixed number of trials, so
X
XX is not a binomial variable.
(Choice C)
C
The trials are not independent, so
X
XX is not a binomial variable.
(Choice D)
D
This situation satisfies each of the conditions for a binomial variable, so
X
XX has a binomial distribution
Choice D is correct: This situation satisfies each of the conditions for a binomial variable, so X has a binomial distribution.
A random variable X is said to have a binomial distribution if it satisfies the following conditions:
The variable X represents the number of successes in a fixed number of independent trials.
Each trial has only two possible outcomes: success or failure.
The probability of success is constant for each trial.
The trials are independent.
In this case, Yoshi attempts the same three-point shot until he makes the shot, so the number of attempts is not fixed. However, each attempt can be classified as a success (if he makes the shot) or a failure (if he misses the shot), so the variable X represents the number of successes in a sequence of independent trials with only two possible outcomes. Also, the probability of success is constant for each attempt, and the attempts are independent, so all four conditions for a binomial distribution are satisfied. Therefore, X is a binomial variable.
Choice D is correct: This situation satisfies each of the conditions for a binomial variable, so X has a binomial distribution.
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The table below shows the number of gold, silver and bronze medals won by some
countries in the 1988 Winter Olympic Games.
Work out the ratio of gold to silver to bronze medals won by Sweden.
Give your answer in its simplest form.
Country
Canada
Finland
Soviet Union
Sweden
Gold
0
4
11
4
Silver
2
1
9
0
Bronze
3
2
9
2
Step-by-step explanation:
It looks as though ( from your post) Sweden won 4 golds and 0 silver and 2 bronze medals
4:0:2 simplifies to 2 :0 : 1
A circle is circumscribed around a regular octagon with side lemgths of 10 feet. Another circle is inscribed inside the octagon. Find the area. Of the ring created by the two circles. Round the respective radii of the circles to two decimals before calculating the area
The area of the ring created by the two circles is approximately 1374.63 square feet.
Let's first find the radius of the circumscribed circle. We can draw a diagonal of the regular octagon, which will be twice the length of one of its sides, forming an isosceles triangle with two radii of the circle.
The angle at the center of the circle between two adjacent sides of the octagon will be 360 degrees divided by 8, or 45 degrees.
The angle at the top of the isosceles triangle will be half of that, or 22.5 degrees. Using trigonometry, we can find the radius of the circumscribed circle:
[tex]$\sin(22.5^\circ) = \frac{opposite}{hypotenuse}$$\sin(22.5^\circ) = \frac{10}{2r}$$r = \frac{10}{2\sin(22.5^\circ)} \approx 21.21$[/tex]
Next, we can find the radius of the inscribed circle. Drawing radii from the center of the octagon to the points where it touches the circle, we can form 8 congruent isosceles triangles, each with a base of length 10 and two equal legs.
The angle at the top of each triangle will be half of the central angle between two adjacent sides of the octagon, or 22.5 degrees. Using trigonometry again, we can find the length of each leg of the triangle:
[tex]$\tan(22.5^\circ) = \frac{opposite}{adjacent}$$\tan(22.5^\circ) = \frac{r'}{5}$$r' = 5\tan(22.5^\circ) \approx 2.93$[/tex]
Now we can calculate the area of the ring created by the two circles:
[tex]$A = \pi R^2 - \pi r'^2$$A = \pi (21.21)^2 - \pi (2.93)^2 \approx 1374.63$ square feetTherefore, the area of the ring created by the two circles is approximately 1374.63 square feet.\\\\\\\\[/tex]
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You are planning on buying yourself a car when you graduate college with cash, you have saved $15,000 so far. The car you will buy is valued at $26,795. You are offered a couple of options in terms of investing the $15,000 you currently have. Explore the options and determine which one will get you $26,795 the fastest. Bank 'A' provides a 5. 45% interest rate, compounding continuously, how long will it take you, in years, if you invest $15,000 to make enough to buy the car? (round your answer to the nearest tenth) Bank "B" provides a 5. 75% interest rate, compounding monthly, how long will it take you, in years, if you invest $15,000 to make enough to buy the car? (round your answer to the nearest tenth) *
The option of bank B investment will allow to reach goal of buying the car the fastest compare to bank A it will take approximately 8.4 years
Saved amount = $15,000
Value of the car = $26,795
Use the formula for compound interest to calculate the time it will take to reach $26,795 for each bank,
Bank A,
Initial investment ' P ' = $15,000
Annual interest rate ' r ' =5.45%
= 0.0545
compounded continuously 'n' = infinity
Target amount 'A' = $26,795
The formula for continuous compounding is,
A = P[tex]e^{rt}[/tex]
Substituting the values, we get,
⇒ 26,795 = 15,000 × [tex]e^{(0.0545t)}[/tex]
Solving for t, we get,
⇒ t = (log(26,795/15,000))/(0.0545)
≈ 9.4 years
It will take approximately 9.4 years to reach the target amount if we invest in Bank A.
Bank B,
Initial investment ' P ' = $15,000
Annual interest rate ' r ' =5.75%/12
= 0.00479 (monthly interest rate)
n = 12 compounded monthly
Target amount 'A' = $26,795
The formula for monthly compounding is,
A = [tex]P\times( 1+ r/n)^{nt}[/tex]
Substituting the values, we get,
26,795 = [tex]15,000 \times(1+0.00479/12)^{12t}[/tex]
Solving for t, we get,
t = (1/12) × (log(26,795/15,000))/(log(1+0.00479/12))
≈ 8.4 years
It will take approximately 8.4 years to reach the target amount if we invest in Bank B.
Therefore, investment in Bank B will allow you to reach your goal of buying the car the fastest, taking approximately 8.4 years.
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