Answer:
- 4m - 2r - 25
Step-by-step explanation:
-8m + (-15) + 4m - 2r - 10
- 8m - 15 + 4m - 2r - 10
collect the like terms beginning with the positives
4m - 8m - 2r - 10 - 15
- 4m - 2r - 25
A map is drawn to a scale of 1/2 inch = 20 miles How many miles apart are two cities that are 3 1/4 inches apart on the map?
Work Shown:
1/2 = 0.5
1/4 = 0.25
0.5 inch = 20 miles, which is the given scale
1 inch = 40 miles, after multiplying both sides by 2
3.25 inches = 130 miles after multiplying both sides by 3.25
The circle below has center P, and its radius is 6in. Given that =m∠QPR170°, find the length of the major arc QSR.
The length of the major arc QSR is 39.77 inches
How to find the length of the major arc QSR?The given parameters are:
m∠QPR = 170 degree
Radius, r = 6 inches
The length of the major arc QSR is calculated as:
Arc length = (360 - Angle/360) * 2πr
Substitute the known values in the above equation
Arc length = (360 - 170/360) * 2 * 3.14 * 6
Evaluate the difference
Arc length = (190/180) * 2 * 3.14 * 6
Evaluate the product
Arc length = 39.77
Hence, the length of the major arc QSR is 39.77 inches
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Given:
p: x – 5 =10
q: 4x + 1 = 61
Which is the inverse of p → q?
If x – 5 ≠ 10, then 4x + 1 ≠ 61.
If 4x + 1 ≠ 61, then x – 5 ≠ 10.
If x – 5 = 10, then 4x + 1 = 61.
If 4x + 1 = 61, then x – 5 = 10.
The inverse of the statement p → q is "If x – 5 ≠ 10 then
4x + 1 ≠ 61"
How to determine the inverse of the statement?The statement is given as
p: x – 5 =10
q: 4x + 1 = 61
The inverse of a statement is such that:
The hypothesis and conclusion are negated.
This means that a conditional statement referred to as p → q would have the inverse of -p → -q.
When the above rule is applied on the statement
p: x – 5 ≠ 10
q: 4x + 1 ≠ 61
This means that the inverse of the statement p → q is "If x – 5 ≠ 10 then
4x + 1 ≠ 61"
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Answer:
A
MF up there wont tell u but its A
7.) Given 9x-27y = 81
D.) Does the line RISE or fall?
E.) Why?
Answer: rises; your slope is positive
Every single time your slope is positive, your line goes upward.
Every time your slope is negative, however, your line goes downward.
Rearrange 9x - 27y = 81 to -27y = -9x + 81 because we want to put our equation into slope intercept so that we can eventually get our 'y' all by itself.
Divide by -27 for every variable.
Your slope intercept form should now look like this; y = 1/3x - 3
Now that we're completely done or that we have 'y' by itself, it's safe to say that our answer is 1/3, which is, also, positive.
Hope this helps, dawg.
You are recording intake and output for your patient who has fluid restrictions of 1,000 milliliters per day. During the past 24 hours, the patient has consumed 3 fluid ounces of milk. 725 milliliters of IV fluid and 4 fluid ounces of juice with the potassium supplement. If one fluid ounce is equal to 30 milliliters, how many milliliters of fluids did the patient consume in 24 hours?
The patient consumed 935 milliliters of fluids in 24 hours.
Restrictions of fluid per day = 1000 milliliters
Consumption of fluid by patient in past 24 hours are :
Milk = 3 ounces
IV fluid = 725 Milliliters
Juice = 4 ounces
As we know that,
One fluid ounce = 30 milliliters
Then, Milk = 3 × 30 = 90 milliliters
Juice = 4 × 30 = 120 milliliters
To determine the total amount of fluids we will add the total amount of Milk, IV fluids and Juice.
Fluids consume by patient = 90 + 725 + 120
= 935 milliliters
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The probability of rain in Nevada is 0.3.
If it rains, the probability of the school bus being late is 0.4.
If it does not rain, the probability of the school bus being late is 0.15.
What is the probability that it will not rain?
If it does not rain, the probability of the school bus bring on time is?
What is the probability that it will rain and the school bus will be on time?
Based on the probability of rain in Nevada, the probability that it will not rain is 0.7.
The probability that if it does not rain, the school bus will be on time is 0.85.
The probability that it will rain and the school bus will still be on time is 0.6.
How to find the probability?The probability that it will not rain in Nevada can be found by the formula:
= 1 - probability of rain in Nevada
= 1 - 0.3
= 0.7
The probability that if it does not rain, the school bus will be on time is:
= 1 - probability of the school bus being late if it does not rain
= 1 - 0.15
= 0.85
The probability that it will rain and the school bus will still be on time is:
= 1 - probability of the school bus being late if it rains
= 1 - 0.4
= 0.6
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Determining the Input Value to Produce the Same Output Value for Two Graphed Functions A coordinate plane with 2 lines. The first line is labeled y equals f(x) and passes through (negative 1, 2), (0, 2), and (2, 2). The second line is labeled y equals g(x) and passes through (negative 0.5, negative 2), points at (0, negative 1), and (1, 1). The lines intersect at (1.5, 2). Use the graph to determine the input value for which f(x) = g(x) is true. x = 0.5 x = 1 x = 1.5 x = 2
Y equals f(x) is written on the first line, The second line, marked y = g(x). When the input is for either of the two functions, the result is x=0 and return the output is same value.
Given that,
Y equals f(x) is written on the first line, which also passes through (-1, 2), (0, 2), and (2, 2). The second line, marked y = g(x), points at (0, -1), passes through (-0.5, -2), and (1, 1). The lines come together at (1.5, 2).
We have to find the input value for which f(x) = g(x) is true using the graph. x = 0.5, x = 1, x = 1.5, x = 2.
The final two actions:
f(x)=-2/3(x+1)
g(x)=1/3(x-2)
The output are equation
f(x)=g(x)
-2/3(x+1)=1/3(x-2)
-2(x+1)=1(x-2)
-2x-2=x-2
-2x-x=-2+2
-x=0
x=0
When x = 0 is used as an input, the first two functions always return the same results.
f(x) traverses (-1,2), (0,2), and (2,2)
The paths that g(x) takes are (-0.5,-2), (0,-1), (1,1)
Therefore, When the input is for either of the two functions, the result is x=0 and return the output is same value.
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make it simple its x=1.5
Select the best answer for the question.
12. Which set is an example of like fractions?
A. 1/2 and 3/2
B.2/1 and 2/3
C. 10/10 and 5/5
D. 7/4 and 4/7
Answer:
A. 1/2 and 3/2
Step-by-step explanation:
You want to identify like fractions among the sets {1/2, 3/2}, {2/1, 2/3}, {10/10, 5/5}, and {7/4, 4/7}.
Like fractionsLike fractions are fractions that have the same denominator. Among the sets offered, the only one with denominators the same is ...
{1/2, 3/2}
=?
२०
21090 (x -1 ) + 109.07 = 1
)
The value of "x" which will satisfy the equation [{21090(x -1 ) + 109.07 } = 1] is 1.01.
As per the question statement, we are provided with an equation [tex][{21090(x -1 ) + 109.07 } = 1][/tex].
We are required to solve the above mentioned equation for "x", such that the value of x when substituted in the equation, satisfies the same.
To solve this question, we will simply use the methods of rearranging and opening up of brackets, as shown below.
[tex][{21090(x -1 ) + 109.07 } = 1] \\or, 21090x - 21090+109.07=1\\or, 21090x - (21090-109.07)=1\\or, 21090x - 20980.93=1\\or, 21090x=(1+20980.93)\\or, 21090x=20981.93\\or,x=\frac{21090}{20981.93}\\or,x=1.00515\\or,x=1.01[/tex]
Therefore, the value of "x" which will satisfy the equation
[{21090(x -1 ) + 109.07 } = 1] is 1.01.
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Identify the terms for the simplified expression:
21x^3+3x^2-14x+9x^2+15x
Answer: 21x^3 + 3 + 12x^2 + x
Step-by-step explanation:
Let f(x) = x^2 + 2 and g(x) = -3. Find f(x) • g(x).
A. X^3-6x^2+12x-6
B. X^3-5x^2+8x-6
C. X^3-3x^2+6x-6
D. X^3-2x^2+5x-6
Find the average rate of change of
The average rate of change of f(x)=[tex]8x^{2} -5[/tex] on the interval [4,b] is [tex]\frac{128-8b^{2} }{4-b}[/tex]
Given,
The function f(x) =[tex]8x^{2} -5[/tex]
The intervals = [4,b]
The average rate of change = [tex]\frac{f(a)-f(b)}{a-b}[/tex]
Where a and b are the interval
f(4)= [tex]8(4)^{2}-5[/tex]
=123
f(b)= [tex]8b^{2}-5[/tex]
The average rate of change = [tex]\frac{123-(8b^{2}-5) }{4-b}[/tex]
[tex]=\frac{123-8b^{2}+5 }{4-b} \\=\frac{128-8b^{2} }{4-b}[/tex]
Hence, The average rate of change of f(x)=[tex]8x^{2} -5[/tex] on the interval [4,b] is [tex]\frac{128-8b^{2} }{4-b}[/tex]
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Find the sum. 2 3/8 + 4 4/8
Find the HCF:
3x³ + 15x² and 2x³ - 50x
H.C.F of 3x³+15x² and 2x³-50x is x(x+5)
What is Number system?A number system is defined as a system of writing to express numbers.
The greatest common divisor of two or more integers, which are not all zero, is the largest positive integer that divides each of the integers.
3x³ + 15x²
Factorize the given expression by taking out 3x²
3x²(x+5)
and the expression 2x³ - 50x
2x(x²-25)
2x(x+5)(x-5)
H.C.F of 3x³+15x² and 2x³-50x is x(x+5)
Hence, H.C.F of 3x³+15x² and 2x³-50x is x(x+5)
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The expense function is E= 15q+750.
A) What is the price per item?
B) What is the variable cost of 100 units?
C) What is the fixed expense?
D) What is the expense if you needed 100 units?
The price per item is 765.
The variable cost of 100 units is 1500.
The fixed expense is 750.
The expense for 100 units is 2250
What is the fixed cost and variable cost?Fixed costs are costs that do not vary with output. e,g, rent, mortgage payments. Variable cost change with the unit of output.
The variable cost of 100 units = variable cost per unit x number of units
15 x 100 = 1500
The expense for 100 units = fixed cost + total variable cost
750 + 1500 = 2250
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John buys a phone for $4 500 and sells it to his brother who pays him in three instalments of $1 200.
(a) Determine with the appropriate working if John made a profit or a loss. [2] (b) What was his percentage profit/loss?
Find the range and standard deviation of the set of data.
12,9,5,13,21
Answer: range = 16 standard deviation = 5
Step-by-step explanation:
1. Solve the following polynomial equations by factoring
b. x4+4x3-8x-32=0
[tex]x^4+4x^3-8x-32=0[/tex]
Can be factoried into:
[tex](x^3-8)(x+4)=0\\[/tex]
Now you're looking for which values of x will make the equations in the brackets equal to 0, since as long as one is equal to 0, they will be multiplied into 0.
First we'll do:
[tex]x^3-8=0[/tex]
We're looking for what number cubed is equal to 8, which is 2.
Note: -2 is also a possibility, but if you plug it in, you'll see that it doesn't work.
Second we'll do:
[tex]x+4=0[/tex]
This one's pretty easy, x will be -4.
So your solutions are:
x = 2, -4
The solutions of the polynomial [tex]x^{4}[/tex] + 4x³ - 8x - 32 = 0 are 2 and -4.
What is a polynomial?Polynomials are sums of terms of the form k⋅xⁿ.
where k is any number
n is a positive integer.
Example:
2x + 4x - 7 is a polynomial
We have,
[tex]x^{4}[/tex] + 4x³ - 8x - 32 = 0 _______(1)
Divide into two parts.
[tex]x^{4}[/tex] + 4x³
-8x - 32
Take out the common from each part.
x³ ( x + 4 )
- 8 ( x + 4 )
Now,
We have,
x³ ( x + 4 ) - 8 ( x + 4 ) = 0
We can write this as:
(x³ - 8) (x + 4) = 0
Now,
We need to find the x values.
x³ - 8 = 0
x³ = 8
x = ±2
Put x = 2 in (1)
[tex]x^{4}[/tex] + 4x³ - 8x - 32 = 0
x = 2
16 + 32 - 16 - 32
0 = 0
x = 2 is satisfied
Put x = -2 in (1)
16 - 32 + 16 - 32 = 0
-64 ≠ 0
x = -2 is not satisfied
x + 4 = 0
x = -4 putting in (1)
256 - 256 + 32 - 32 = 0
0 = 0
x = -4 is satisfied
Thus the solutions of the polynomial [tex]x^{4}[/tex] + 4x³ - 8x - 32 = 0 are 2 and -4.
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Sally is running laps around a track. She runs 12 laps to warm up. Then she runs 13² laps.
How many laps does Sally run in all? Move numbers to the boxes to show the answer.
Answer:
181
Step-by-step explanation:
Sally is running laps around a track. She runs 12 laps to warm up. Then she runs 13² laps.
First write the equation. we know she alr ran 12 laps so its going to be +12
to 13^2. so the equation will be 12+13^2 then using PEMDAS we know that we have to do the exponents first so 13^2 is just 13 * 13 which is 169. so now the equation is 169+12 now just add. the answer is 181
a decimal point is used when working with dollars but the decimal point is not necessary when working with cent for each dollar amount give the equivalent amount expressed as cents $5.74 and $0.16
A decimal point is used when working with dollars but the decimal point is not necessary when working with cent for each dollar amount, the equivalent amount expressed as cents of $5.74 is 574 cents and $0.16 is 16 cents
We know that 1 dollar is equal to 100 cents
So, x dollar = x(100) cents
For $5.74 = 5.74(100) cents
= 574 cents
For $0.16 = 0.16(100) cents
= 16 cents
What is a decimal point?Integer and non-integer numbers are represented using the decimal numeral system, also known as the base-ten positional numeral system, denary, or decanary. The Hindu-Arabic numeral system has been expanded to include non-integer values. Decimal notation is the term used to describe how numbers are represented using the decimal system.
It is indicated by a '.', for instance, 3.14
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the angle bisector bisect the opposite side inti the two length ,2 and 4 unit long. the length of the height on that side is 225 units. determine the length of the other two sides of a triangle.
The lengths of the other two sides of the triangle is 8√6 units.
What will be the length?
Given that,
AD is the angle bisector of ∠A .
BD = 2 units .
DC = 4 units .
AE ⟂ BC and √15 units .
So, AB / AC = BD / DC { By angle bisector theorem }
AB / AC = 2/4
AB / AC = 1/2 ......... Eqn.(1)
Also, BC = BD + DC = 2 + 4 = 6 units .
Now let BE = x units .
So, in right-angled ∆AEB ,
AB = √(15 + x²) { By pythagoras theorem }
In right angled ∆AEC ,
AC = √{15 + (x - 6)²} { By pythagoras theorem }
Putting both values in Eqn.(1),
AB/AC = 1/2
√(15 + x²)/√(15 + x² + 36 - 12x) = 1/2
Squaring both sides,
(15 + x²) / (x² - 12x + 51) = 1/4.
4(15 + x²) = x² - 12x + 51.
60 + 4x² = x² - 12x + 51.
4x² - x² + 12x + 60 - 51 = 0.
3x² + 12x + 9 = 0.
3x² + 3x + 9x + 9 = 0.
3x(x + 1) + 9(x + 1) = 0.
(3x + 9)(x + 1) = 0.
x = (-3) and (-1) .
Taking x = (-1),
AB = √(15 + x²) = √(15 + 1) = 4 units .
So, AC = 4 * 2 = 8 units .
Taking x = (-3),
AB = √(15 + 9) = √24 = 4√6 units.
So, AC = 2 * 4√6
= 8√6 units .
Hence, the lengths of the other two sides of the triangle is 8√6 units.
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A) The derivative of f(x) = 6x ^ 2 is given by f^ prime (x)=lim h——>0 ________=____.
B) The derivative of f(x) = 2x ^ 2 - 7x + 8 is given by f () lim h—->______=____.
Here we go ~
A.) Derivative of 6x² :
[tex]\qquad \sf \dashrightarrow \:f {}^{ \prime}(x) = \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{f(x + h) - f(x)}{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{6(x + h) {}^{2} - 6(x) {}^{2} }{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{6(x {}^{2} + 2xh + h {}^{2} ) {}^{} - 6(x) {}^{2} }{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ \cancel{6x {}^{2}} + 12xh +6 h {}^{2} {}^{} - \cancel{6x{}^{2}} }{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ 12xh +6 h {}^{2} {}^{} }{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ \cancel{ h}( 12x +6h ) {}^{} {}^{} }{ \cancel{h}} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: 12x + 6h[/tex]
[tex]\qquad \sf \dashrightarrow \: 12x + 0[/tex]
[tex]\qquad \sf \dashrightarrow \: f {}^{ \prime} (x) = 12x[/tex]
B.) The derivative of f(x) = 2x² -7x + 8 :
[tex]\qquad \sf \dashrightarrow \:f {}^{ \prime}(x) = \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{f(x + h) - f(x)}{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ 2(x + h) {}^{2} - 7(x + h) + 8 - (2 {x}^{2} - 7x + 8)}{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ 2(x {}^{2} + 2xh + {h}^{2} ) {}^{} - \cancel{7x} + 7h+ \cancel8 - 2 {x}^{2} + \cancel{7x } - \cancel 8)}{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ \cancel{ 2x {}^{2}} + 4xh + 2{h}^{2} {}^{} - 7h - \cancel{2 {x}^{2}} }{h} [/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: \frac{ \cancel {h}( 4x + 2{h}^{} {}^{} - 7) }{ \cancel{h} }[/tex]
[tex]\qquad \sf \dashrightarrow \: \sf\displaystyle { \lim_{h\to0}} \sf\: \: 4x + 2{h}^{} {}^{} - 7[/tex]
[tex]\qquad \sf \dashrightarrow \: 4x - 0 - 7[/tex]
[tex]\qquad \sf \dashrightarrow \: f {}^{ \prime} (x) = 4x - 7[/tex]
A 28% income tax on a 80,000 income
Answer:
22,400
Step-by-step explanation:
80,000 x .28
∠J and ∠E are congruent. If ∠J = (6x + 4)° and ∠E = (2x + 32)°, then what is the value of ∠E?
Answer: 46
Step-by-step explanation:
Since we know that angles J and E are congruent, we can do the equation 6x + 4 = 2x +32. We then solve for x which gives us 7. After that, we plug in the 7 into the equation for E which would be = 2(7) + 32. Once we solve that, we end up with 46.
2. Find the roots of the polynomial equation (point)
2x³ + 2x2-19x+ 20 = 0
Answer:
x=-4
Step-by-step explanation:
this is if by roots, the problem is asking for the zeros of the equation
The height, above the ground, of a block on a vertical spring is a sinusoidal (trigonometric) function of time. In the interval from time 2.1 seconds to time 2.7 seconds, the block's height decreases from its maximum of 48 inches to its minimum of 30 inches. Which function h(t) could model the block's height in inches above the ground at time t seconds?
The sinusoidal function for the given conditions can be written as h(t) = 9cos(1.67π(x - 2.1)) + 39.
What is sinusoidal function?The term sinusoidal refers to a curve, also known as a sine wave or a sinusoidal, that shows smooth, periodic oscillation. It is named after the function y=sin (x). Sinusoidal appear often in mathematics, physics, engineering, signal processing, and many other fields.
A general form of a cosine function is given as shown below,
g(x) = a cos(bx+c) + d
Where the values of the given constant is,
a = amplitude
b = The period is of 2pi/B
c = phase shift
d = vertical shift
Since for the given condition the greatest value is 48 and the smallest value is 30 (a difference of 18), therefore, the amplitude is of the function can be written as,
2a = 18
a = 9
Further, a conventional cosine function with amplitude 9 would fluctuate between -9 and 9, while this one ranges between 30 and 48, resulting in d = 39 vertical shift.
Also, The minimum and maximum values form half the period, therefore, we can write,
π/B = 2.7 - 2.1
B = π/0.6
B = 1.67π.
Furthermore, The maximum value in the normal function is at x = 0, but the greatest value in this function is at x = 2.1, thus, the phase shift is 2.1 units to the right, or c = -2.1.
Hence, the sinusoidal function for the given conditions can be written as h(t) = 9cos(1.67π(x - 2.1)) + 39.
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The speed of an object is given by the following formula: where s is the speed of the object, d
is the distance traveled in miles, and t is the time traveled in hours. If a car travels 312 miles at a
rate of 52 mph, how long did it take?
After 30 baseball games Aaron Smith had 24 hits. If after 100 games he had 80 hits, what is his average hits per baseball game?
Aaron Smith would has average hits per baseball game as 0.79 hits per game.
What is the interpretation of average?Average provides ill information in case of skewed data.
Arithmetic mean is the best central measure available for representing the values of a data set. It is also called average of the values of the considered data set. It serves as predicted value(in case no other information of the data is available) of that data set.
WE have been given that After 30 baseball games Aaron Smith had 24 hits. If after 100 games he had 80 hits, then he would has average hits per baseball game;
Average = Hits in game / number of games
Average = 24- 80 / 30-100
Average = 56 / 70
Average = 0.79 hits per game
Hence, Aaron Smith would has average hits per baseball game as 0.79 hits per game.
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(-2/3)(6/7)
Please show work if possible!
To swimmers Angie aTwo swimmers Angie and Beth from different states wanted to find out who had the fastest time for the 50 m freestyle when compared to her team which swimmer had the fastest time when compared to her team
Using z-scores, it is found that due to the lower z-score, Beth had the fastest time when compared to her team.
What is the missing information?This problem is incomplete, but researching on the internet, we have that:
Angie had a time of 26.2 seconds, while her team had a mean time of 27.2 seconds with a standard deviation of 0.8 seconds.Beth had a time of 27.3 seconds, while her team had a mean time of 30.1 seconds with a standard deviation of 1.4 seconds.What are z-scores?The z-score of a measure X in a distribution with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.For this problem, lower times means that the swimmer is faster, hence the swimmer that had the fastest time when compared to her team is the swimmer with the lowest z-score.
Angie's z-score is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
Z = (26.2 - 27.2)/0.8
Z = -1.25.
Beth's z-score is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
Z = (27.3 - 30.1)/1.4
Z = -2.
Due to the lower z-score, Beth had the fastest time when compared to her team.
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