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OlgaM077 [116]
2 years ago
7

You earn $42 for washing 7 cars. How much do you earn for washing one car? How much do you earn for washing 3 cars? How much do

you earn for washing 5 cars?
Mathematics
1 answer:
SSSSS [86.1K]2 years ago
3 0

Answer:

1 car = $6 ; 3 car = $18 ; 5car = $30

Step-by-step explanation:

$ 42 = 7 cars

so 1 car = $42÷7 = $6

so 3 cars = 3 × $6 = $18

so 5 cars = 5 × $6 = $30

Hope this helps you.

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Some one someone please help I'm so stuck
Delicious77 [7]
We have k*(blank)=7/2 and k=14 --> (blank)=7/2/14= 1/4 so the answer will be 1/4. 
7 0
3 years ago
What is the equation of a line with points -3,-11 and 2,4?​
const2013 [10]

Answer:

y=3x-2

Step-by-step explanation:

\frac{4-(-11)}{2-(-3)} =\frac{15}{5} =3

m=3 so using point-slope intercept form

y-y_{1}=m(x-x_{1} )

y-4=3(x-2)

       3x-6

+4        +4

y=3x-2

5 0
2 years ago
Find the slope of the line that passes through the pair of points (5,-6),(2,-3)​
ss7ja [257]

Answer:

-1is your answer to the question

7 0
2 years ago
The National Assessment of Educational Progress (NAEP) gave a test of basic arithmetic and the ability to apply it in everyday l
mylen [45]

Answer:

a) 2.0702

b) 2.07

Step-by-step explanation:

Given:

Sample, n = 840

standard deviation, σ = 60

a) The standard deviation of the sampling distribution, will be:

= \frac{\sigma}{\sqrt{n}}

= \frac{60}{\sqrt{840}}

= 2.0702

Standard deviation of the sampling distribution is 2.0702

b) According to the 68 part of the 68-95-99.7 rule, 68% of all values of x fall within 1 standard deviation on either side of the unknown mean μ.

Therefore, missing number will be:

1 * [\frac{\sigma}{\sqrt{n}}]

= 1 * 2.0702

= 2.0702 ≈ 2.07

6 0
2 years ago
How many
MariettaO [177]

Answer:

5

Step-by-step explanation:

92/17= 5.4

there are 5 total 17s in 92.

6 0
3 years ago
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