Ask question

Ask question

All categories

3 years ago

9

Sam earned $154 washing 7 cars. He earned the same amount for washing each car. Select all the equations that show reasonable es

timates for the amount Sam earned washing each car.

2 answers:

Vitek1552 [10]3 years ago

8 0

Answer:

154÷7=22

Step-by-step explanation:

If Sam earned $154 for 7 cars then you can divide 154 by seven and get an answer of 22.

gogolik [260]3 years ago

5 0

Answer:

Put the equations and I can answer

You might be interested in

An organic farm has been growing an heirloom variety of summer squash. A sample of the weights of 40 summer squash revealed that

natta225 [31]

Answer:

b. 0.0228

Step-by-step explanation:

We are given that

n=40

Mean, $\mu=402.7 g$

Standard deviation, $\sigma=8.8$ g

We have to find the probability hat the mean weight for a sample of 40 summer squash exceeds 405.5 grams.

$P(x>405.5)=P(\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}>\frac{405.5-402.7}{\frac{8.8}{\sqrt{40}}})$

$P(x>405.5)=P(Z>\frac{2.8}{\frac{8.8}{\sqrt{40}}})$

$P(x>405.5)=P(Z>2.01)$

$P(x>405.5)=1-P(Z\leq 2.01)$

$P(x>405.5)=1-0.977784$

$P(x>405.5)=0.022216$

Hence, option b is correct.

5 0

3 years ago

\large -\frac{2}{3}x+3=\frac{2}{3}x+\frac{1}{3}

german

Answer:

$\boxed {x = 2}$

Step-by-step explanation:

Solve for the value of $x$ :

$-\frac{2}{3}x + 3 = \frac{2}{3}x + \frac{1}{3}$

-Take $\frac{2}{3}x$ and subtract it from $-\frac{2}{3}x$ :

$-\frac{2}{3}x + 3 -\frac{2}{3}x = \frac{2}{3}x - \frac{2}{3}x + \frac{1}{3}$

$-\frac{4}{3}x + 3 = \frac{1}{3}$

-Subtract both sides and convert $3$ to a fraction:

$-\frac{4}{3}x + 3 - 3 = \frac{1}{3} - 3$

$-\frac{4}{3}x = \frac{1}{3} - \frac{9}{3}$

Since both $\frac{1}{3}$ and $\frac{9}{3}$ have the same denominator, then you would subtract the numerator:

$-\frac{4}{3}x = \frac{1 - 9}{3}$

$-\frac{4}{3}x = \frac{8}{3}$

-Multiply both sides by $-\frac{3}{4}$ , which is the reciprocal of $-\frac{4}{3}$ :

$x = \frac{8}{3} (-\frac{3}{4})$

$x = \frac{-8(-3)}{3 \times 4}$

$x = \frac{24}{12}$

-Divide $24$ by $12$ :

$x = \frac{24}{12}$

$\boxed {x = 2}$

So, therefore, the value of $x$ is $2$ .

5 0

3 years ago

What is a graphical word that means the same as the letter "a" in<br>exponential functions?

White raven [17]

Answer:

Base of the function. Starting value

Step-by-step explanation:

8 0

3 years ago

75% of _____ oranges is 15 oranges (Fill in the blanks)

Mila [183]

Try this: 0.75n = 15. Divide both sides by 0.75 to solve for n: n = 15/0.75
n = 20

There are originally 20 oranges.

8 0

4 years ago

Solve the Equation Show ALL Work.<br><br> 3(5y+4)=12+15y

wolverine [178]

Answer:

I think that the answer

Step-by-step explanation:

3(5y+4)=12+15y

3×5y+4=12+15y

=3×4+12=15y+5y

24=20

d.b.s by 20

24/20=20/20

1.2=1

=1.2//

5 0

4 years ago