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Zarrin [17]
3 years ago
8

The sum of a number,n,and 8 is multiplied by -4 ,and the result is -12 .what is the number?

Mathematics
2 answers:
GREYUIT [131]3 years ago
8 0
(8+n)*-4=-12
-32-4n=-12
-4n=20
n=-5
Anastasy [175]3 years ago
4 0
Sum of n and 8 = (n + 8)

Multiplied by -4  =  -4*(n + 8)

Result = -12

-4*(n + 8) = -12            Divide both sides by -4

(n + 8) = -12/-4

n + 8 = 3

n = 3 - 8

n  = -5.

The number is -5.

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32 models need to make model of 3200.

Given that a 1 model contain 100.

Two series of numbers, usually empirical data, that are proportional or proportional if their respective elements are in constant proportion, called the scaling factor or the rate constant.

One model has 100 elements.

Now, we have to find how many model contains 3200 elements.

So, 1 model=100 elements

n model =3200 elements

We will write this in proportion as

1/n=100/3200

Applying the cross multiply, we get

3200×1=n×100

Divide both sides with 100, we get

3200/100=100n/100

3200/100=n

32=n

Hence, the  32 models contain 3200 elements when one contain 100 elements.

Learn more about proportional from here brainly.com/question/23536327

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4 0
1 year ago
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antoniya [11.8K]
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7 0
3 years ago
Solve 3x + k = c for x
olasank [31]

Here we are given the equation 3x+k =c

Here in order to solve for x , first let us bring k to the right side.

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Oduvanchick [21]

Answer:

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4 0
3 years ago
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Margo borrows $1900, agreeing to pay it back with 4% annual interest after 9 months. How much interest will she pay?
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57 (9 months interest)

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5 0
3 years ago
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