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Bezzdna [24]
3 years ago
5

How do you solve 4 [ 5 ( 12 + 3 ) - 2 ] - 7

Mathematics
1 answer:
laila [671]3 years ago
3 0
4 [ 5 (12 + 3) - 2 ] - 7

4 [ 5 (15) - 2 ] - 7

4 [ 75 - 2 ] - 7

4 [ 73 ] - 7

292 - 7

285
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Anyone want 98 points? Answer and explain the answer below.
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5 0
3 years ago
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If the sum of the measures of the interior angles of a polygon is 1920°, how many sides does it have?
gizmo_the_mogwai [7]

Answer:

<u>The regular polygon has 13 sides</u>

Correct statement and question:

If the sum of the measures of the interior angles of a polygon is 1980°, how many sides does it have?

Source:

1,920° is not a valid value for a regular polygon. It should be either 1,980° or 1,800° (it has to be a multiple of 180). We pick 1,980° to answer the question.

Step-by-step explanation:

Let's recall that the formula of the sum of the interior angles of any polygon is:

Sum of Interior Angles = (n-2) * 180°, where n is the number of sides of the polygon.

Therefore, replacing with the value we know:

1,980 = (n-2) * 180

n - 2 = 1,980/180

n - 2 = 11

<u>n = 13</u>

7 0
3 years ago
Use the number line below, where RS = 7y +3, ST = 5y +8, and RT = 83.
Llana [10]

Answer:

Step-by-step explanation:

Given the vectors based on the number line as RS = 7y +3, ST = 5y +8, and RT = 83, the equation RS+ST = RT will be used to get the unknown.

Substituting the given equation into the expression we will have;

7y +3+5y +8 = 83

collect like terms'

7y+5y+3+8 = 83

12y + 11 = 83

12y = 83-11

12y = 72

y = 72/12

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b) Substitute y = 6 into RS and ST

Given RS = 7y+3

RS = 7(6)+3

RS = 42+3

RS = 45

For ST;

ST = 5y+8

ST = 5(6)+8

ST = 30+8

ST = 38

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Answer:

612

Step-by-step explanation: Im guessing ran out of time

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Step-by-step explanation:

I think all of you under stand this question so please like the answer

6 0
2 years ago
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