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dimulka [17.4K]
3 years ago
5

18 - 12y = -22 - 7y Can someone help

Mathematics
2 answers:
Ganezh [65]3 years ago
5 0

Answer:

8

Step-by-step explanation:

18 = -22 +5y

add 22 to both sides

40 = 5y

y = 8

Naddik [55]3 years ago
4 0

Answer:

y=8

Step-by-step explanation: Add 7y to both sides

18-12y+7y=-22

Then subtract 18 from both sides

-12y+7y=-22-18

Combine like terms

-5y=-40

Divide Both sides by -5

y=8

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Use the Pythagorean Theorem to find the length of the leg in the triangle shown below.
Natali [406]
The answer to what the length of the leg would be is 15.

You would do this problem by first writing down your Pythagorean Theorem, which is a^2 + b^2 = c^2.

Since we have our hypotenuse which is c^2 in our equation, we would write or insert the number we have.

So our equation could be that a or b leg equals 20, it doesn’t matter which one.

So we could write, 20^2 + b^2 = 25^2. So we don’t know what b leg is.

First we should figure out what 20^2 is and what 25^2 is.

20^2 is 400 and 25^2 is 625.

Our equation now comes to 400 + b^2 = 625.

Now we take 400 and subtract it from
625 -> 400 + b^2 = 625
-400.

So 625 - 400 comes out to be 225.

Lastly instead of squaring or putting 225 to the second power, we do the opposite.

So instead of squaring 225 we must square root 225. √ 225 .

The square root of √ 225 comes out to be 15.

3 0
3 years ago
A university's freshman class has 6200 students. 4836 of those students are majoring
WINSTONCH [101]

According to the solving 78% of the freshman class are Economics majors.

<h3>What does a percentage mean?</h3>

percentage, a relative figure signifying hundredths of any amount. Since one percent (symbolized as 1%) is equal to one hundredth of something, 100 percent stands for everything, and 200 percent refers to twice the amount specified.

<h3>Why is it called percent?</h3>

The word "percent" comes from the Latin adverb per centum, which means "by the hundred." In the sixteenth century, the Latin expression made its way into English. Later, it was shortened to % with a final period.

<h3>According to the given data:</h3>

It is given that the total number of students in freshman class = 6200

Total number of students majoring in Economics = 4836

Here, we are asked to find the percentage of the freshman class who are majoring in Economics.

Percent of students majoring Economics =  (Number of students majoring/ Economics  Total number of students) x 100

= \frac{4836}{6200} x 100

= 78%

According to the solving 78% of the freshman class are Economics majors.

To know more about Percentage visit:

brainly.com/question/14979505

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4 0
1 year ago
Mrs. Alberts has taught seventh grade math for thirty years. Every year she calculates and records the class average on the fina
sdas [7]

Answer:

2

Step-by-step explanation:

89.633333333333

Mean Absolute Deviation (MAD): 2.0755555555556

rounding these both you get 90 and 2.

5 0
3 years ago
PLEASE HELP ASAP! WILL MARK BRANLIEST-
mafiozo [28]

Answer:

180

Step-by-step explanation:

8 0
2 years ago
The degree measure of each exterior angle of a regular octagon is represented by the expression 7x-4. Solve for X
Y_Kistochka [10]

Answer:yes

Step-by-step explanation:

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3 years ago
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