3 years ago

Why is it important to line up the digits in each place value position when subtracting?

2 answers:

5 0

It would not make sense if you were to do
34
28
The right way is

34
28

Another example is that if you were to subtract by 1 digit by 2

78
1

This is the wrong one

78
1

Katarina [22]3 years ago

5 0

So that you don't subtract the wrong numbers and get the wrong answers. ,
123
-----
386
_____
?

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G(x) = 15 – 4x<br> h(x) = x +8<br> Write g(h(x)) as an expression in terms of 2.

Sergeu [11.5K]

For this case we have the following functions:

$g (x) = 15-4x\\h (x) = x + 8$

We must find $g (h (x))$ when $x = 2$ .

So:

$g (h (x)) = 15-4 (x + 8) =$

We apply distributive property to the terms within parentheses taking into account that:

$- * + = -\\15-4x-32 =$

We add similar terms taking into account that different signs are subtracted and the sign of the major is placed:

$-17-4x$

Thus, we have to:

$g (h (x)) = - 17-4x$

Then, with x = 2:

$g (h (2)) = - 17-4 (2) = - 17-8 = -25$

Equal signs are added and the same sign is placed.

Answer:

$g (h (2)) = - 25$

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3 years ago

A 9,000-gallon silo of wheat is being drained at a rate of 500 gallons per hour. A 7,000-gallon silo of wheat is being filled at

netineya [11]

Answer:

Step-by-step explanation:

9000-500h=0+500h

h= 9 hours

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Nina goes to the neighborhood store to buy 14 rolls of toilet paper. If she spent $20.02 in all for her purchase, how much does

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Each roll is $1.43.

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20.02 ÷ 14 = 1.43.

1.43 × 14 = 20.02.

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Step-by-step explanation:

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