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Advocard [28]
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.
Mathematics
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

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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=8.8g

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
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