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Leona [35]
3 years ago
13

The scatter plot below shows the commute times of 25 different people and the number of stoplights they drive through on their w

ay to work.
Which type of association best describes the relationship between the number of stoplights on a person's commute and that person's commute time?
A.
no association
B.
negative association
C.
positive and negative association
D.
positive association

Mathematics
1 answer:
kompoz [17]3 years ago
8 0

Answer:

D. Positive association

Step-by-step explanation:

The line of best fit would have a positive slope

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The time required for a skilled worker to produce x shirts is given by the function T(x) = 4x + 2, where T is measured in hours.
solong [7]

Answer:

A. $1,110

B. 50 units.

Step-by-step explanation:

A. Substitute x=18 into the function T(x)=4x+2 for calculate the time in hours required for the worker to produce 18 units:

T(18)=4(18)+2=74

Now you need to substitute T=74 into the function S(T)=15T to calculate the amount in dollars she will be paid for 74 hours:

S(74)=15(74)=1,110

She will be paid $1,110.

B. To calculate the number of units that the worker needs to produce to be paid $3,030 , you need to substitute S(T)=3,030 into the function S(T)=15T and solve for T (to find the number of hours she requires to work to be paid $3,030)

3,030=15T\\\\T=\frac{3,030}{15}\\\\T=202

Now, substitute T(x)=202 into T(x)=4x+2 and solve for x, to calculate the number of units she produces in 202 hours:

202=4x+2\\\\202-2=4x\\\\x=\frac{200}{4}\\\\x=50

She would need to produce 50 units to be paid $3,030

5 0
4 years ago
Solve for p. 20p + -5p – -17 = -13
STatiana [176]
20p + -5p - -17 = -13 

20p + -5p - -17 = -13:p  |Solve \  for \ p| 

20p-5p+17=-13 


15p+17=-13
 
 


15p=-13-17
 
  |Subtract \ 17 \ from \ both \ sides| 


15p=-30
 
 


15p/15=-30/15
 
  |Divide  \ both \ sides \ by \ 15| 


p=-2
 

8 0
3 years ago
Read 2 more answers
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Nataly_w [17]

Answer:

8x +5

Step-by-step explanation:

that's what I got.................

4 0
3 years ago
Read 2 more answers
Simplify the expression
erastova [34]

Answer : A

We need to simplify the given expression

Lets factor numerator first

2x^2-5x-3 =(2x+1)(x-3)

x^2+8x+15 =(x+5)(x+3)

Now we factor the denominator

x^2+x-20 =(x+5)(x-4)

2x^2+9x+4 =(2x+1)(x-4)

Now we simplify it

\frac{(2x+1)(x-3)}{(x+5)(x-4)} * \frac{(x+5)(x+3)}{(2x+1)(x-4)}

Now cancel out same factors. so we left with

\frac{(x+3)(x-3)}{(x+4)(x-4)} }

Now multiply the factors

\frac{x^2-9}{x^2-16} }



6 0
3 years ago
Solve for x y=c(x+b)
sergeinik [125]

Step-by-step explanation: To solve for x in this literal equation, I would first distribute the C through the parentheses to get y = cx + cb.

Now subtract cb from both sides to get y - cb = cx.

Finally, divide both sides by c to get y - cb / c = x.

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