3 years ago

What is the solution to the following system

Mathematics

1 answer:

Afina-wow [57]3 years ago

4 0

Answer:

I belive it's B

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Solve. 14/n+7=10/n-4 N=5.25 N=3.5 N=31.5 N=30

Ilya [14]

Answer:

n=31.5

Step-by-step explanation:

The given question is:

$\frac{14}{n+7}=\frac{10}{n-4}$

Cross multiply to get:

$14(n-4)=10(n+7)$

Expand the parenthesis:

$14n-56=10n+70$

Group similar terms:

$14n-10n=70+56$

Combine the like terms

$4n=126$

Divide both sides by 4

$n=\frac{126}{4}$

n=31.5

5 0

3 years ago

Which number should you divide on each side of this equation in order to isolate g? 7g=75+d-12x

xz_007 [3.2K]

Divide both sides by 7

7 0

3 years ago

In 1/8 days, a construction crew built 1/4 miles of a road. What is the unit rate in miles per day.

tigry1 [53]

The unit rate of road construction is 2 miles per day.

Step-by-step explanation:

Given,

In $\frac{1}{8}$ days $\frac{1}{4}$ miles road is constructed.

To find

The rate of road constructed per day

Method

We will apply unitary method to solve it.

Now,

In $\frac{1}{8}$ days $\frac{1}{4}$ miles road is constructed.

In 1 day the road will be constructed = $\frac{1}{4}$ ÷ $\frac{1}{8}$ miles

= 2 miles

4 0

3 years ago

Which is the closest approximation to the area of the circle?

Arte-miy333 [17]

A. 6082
B.120687
C.1188228
D.19042587

4 0

2 years ago

How to find the surface area

Stolb23 [73]

Answer:

158 in²

Step-by-step explanation:

Surface area

A = 2·(l·w + l·h + w·h)

= 2·(3in·8in + 8in·5in + 3in·5in)

= 2·(24in² + 40in² + 15in²)

= 2·(79in²)

= 158 in²

al3xis

8 0

3 years ago