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2 years ago

Find the area of the circle of 7 inches

Mathematics

1 answer:

Arisa [49]2 years ago

7 0

Answer:

38.480

Hope this helps!!!:)

Step-by-step explanation:

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How do you solve 3n+4n=-14

gizmo_the_mogwai [7]

Step-by-step explanation:

3n+4n=-14

now add 3n and 4n

7n = -14

divide both by 7

n = -2

3 0

3 years ago

8 numbers have a sum of 90. Whats the average number?

ehidna [41]

Answer:

$\huge\boxed{11.25}$

Step-by-step explanation:

When finding the average of a set of numbers, we

A) Add up all the numbers
B) Divide that sum by the total number of numbers in the data set

Let's represent this with a formula, s being the sum of all numbers, n being the total number of numbers.

$\frac{s}{n}$

Since we <u>already know the sum</u> and we <u>know how many numbers there are</u> (8), we can substitute inside our expression $\frac{s}{n}$ to find the average.

$\frac{90}{8}$
$11.25$

Therefore, the average of all these numbers is 11.25.

Hope this helped!

4 0

3 years ago

Solve for x triangles

wel

Answer:

115

Step-by-step explanation:

180-50=130

130/2=65

180-65=115

4 0

2 years ago

Solve the equation 7/z-1 = 9/z+4

algol [13]

Answer:

z is equal to 18.5

Step-by-step explanation:

When an equation is in the format a/b = c/d, the quickest way to simplify it is to cross multiply. Each side is multiplied by the other sides denominator, eliminating the division:

$\frac{7}{z-1} = \frac{9}{z + 4}\\7(z + 4) = 9(z - 1)\\7z + 28 = 9z - 9\\7z - 9z = -9 - 28\\-2z = -37\\z = 37/2\\z = 18.5$

So z is equal to 18.5

3 0

2 years ago

The total cost of your pizza is 6.46.

vodka [1.7K]

Answer:

193.80

Step-by-step explanation:

30x6.46=193.80

3 0

2 years ago

Read 2 more answers