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marshall27 [118]
2 years ago
13

Jamal earns $40 washing 5 windows. At this rate, how many windows did Jamal wash to earn $80?​

Mathematics
2 answers:
maksim [4K]2 years ago
8 0

Answer:

Jamal washed 10 windows

Step-by-step explanation:

The rate that Jamal washes windows at is $8/1 window

8/1=80/10

I hope this helped

Alja [10]2 years ago
3 0
10 windows : divide 40/5=8
Then divide 80/8 =10
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If x varies directly with y and x = 6 when y = 15, find x when y= 20.
Kaylis [27]

Answer:

8

Step-by-step explanation:

Varies directly think y=kx

Varies indirectly think y=k/x

We have first option so y=kx

x=6 and y=15 means we have 15=k(6)

So k=15/6 or reducing gives=5/2

So we just found our constant of proportionality, this number never changes.  It stays the same no matter what x or y they give you...

So the equation is y=5/2 *x

Now what is x if y=20

Plug in 20=5/2 *x

So x=20*2/5=40/5=8

6 0
3 years ago
488, 460, 520, 544, 535<br> What is the range of the data?
n200080 [17]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Do i begin with division first?
lara31 [8.8K]
Use PEMDAS. Division comes before addition. start with 9/25 ÷ 18/15. You will divide those like you would normally divide a fraction, so yes, do the inverse of 18/15 and multiply that by 9/25. after you've done that, take that answer and add the 5/8 to it.
:)
5 0
2 years ago
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A pet store is having a pet fish sale. Lenny bought p platies and l loaches. Write an algebraic expression to represent the tota
IrinaK [193]
You would write the expression as nP +nL=cost because it’s the number of plagues that he buys plus the number of loaches that he buys
4 0
3 years ago
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The rectangular floor of colbys room is 9 feet long and 6 feet wide. What is the area of the floor
EastWind [94]

Answer:

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Step-by-step explanation:

The area is the product of length and width:

  A = LW = (9 ft)(6 ft)

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The area of the floor is 54 square feet.

7 0
2 years ago
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