Each week, Robbie earns $x mowing lawns and receives $15 as his allowance.

What is the distribution property of 4 times 37

hjlf

Answer:

4(30 +7) = 120 +28 = 148

Step-by-step explanation:

When applying the distributive property to integers, we usually break them apart according to place value. That is not the only way it can be done.

4×37 = 4(30 +7) = 4·30 +4·7 = 120 +28 = 148

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You can also break apart 37 other ways:

4×37 = 4(35 +2) = 4·35 +4·2 = 140 +8 = 148

4×37 = 4(40 -3) = 4·40 -4·3 = 160 -12 = 148

Or, you can break apart 4:

37×4 = 37(2 +2) = 37·2 +37·2 = 74 +74 = 148

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The distributive property is usually written in generic form as ...

a(b+c) = ab +ac

Then you may want to stop after the first couple of steps:

4(30 +7) = 4·30 +4·7

We can't tell if you're suppose to evaluate the expression or not. Check your reference materials for an example of this kind of problem.

7 0

2 years ago

What number is 15% of 80?<br> use percent proportions

vova2212 [387]

!5% is equivalent to 15 parts over the whole 100 part. It is written in proportions as 15/100.

Similarly, you need to find how many parts in 80 are equivalent to 15%or 15/100. So, just equate both equation with x as an unknown.

x/80 = 15/100
x = (15/100)*80
x = 12

Thus, the 15% of 80 is 12.

8 0

2 years ago

Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?

grigory [225]

cost of pencil = x = 0.07

and cost of eraser = y = 0.03

Step-by-step explanation:

let cost of pencil = x

and cost of eraser = y

So, we have equations:

$4x+3y=0.37\\3x+4y=0.33$