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Hatshy [7]
2 years ago
6

I need someone to solve for the variable and show how plzz

Mathematics
2 answers:
ValentinkaMS [17]2 years ago
7 0

Answer:

Step-by-step explanation:

2(x + 15)⁰ + (3x + 20)⁰=180⁰

2x + 30⁰ + 3x + 20⁰=180⁰

2x + 3x + 30⁰ + 20⁰=180⁰

5x + 50⁰ - 50⁰=180⁰-50⁰

5x=130⁰

5x/5=130⁰/5

x=26⁰

IgorC [24]2 years ago
3 0

Answer:

x should equal 26.

Step-by-step explanation:

since they are cointerior angles:

2 (x + 15) + (3x + 20) = 180

2 (x) + 2 (15) + (3x + 20) = 180

2x + 30 + (3x + 20) = 180

2x + 30 + 3x + 20 = 180

5x + 50 = 180

5x + 50 - 50 = 180 - 50

5x = 130

5 ÷ 5x = 130 ÷ 5

x = 26

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3 years ago
The snow is now 52 inches deep. If this was a 77% decrease, what was the initial depth? What equation can help you find this?
IrinaVladis [17]

Answer:

The required equation is:

0.23x = 52

Hence, option A is true.

Step-by-step explanation:

Given

Let 'x' be the initial depth

The snow is now 52 inches deep and it is a 77% decrease.

Let the initial 'x' depth be represented as 100%.

x → 100%

Given the current 52 inches is a 77% decrease. So, we need to decrease the 77/100 or 0.77 from the initial depth, so

[100% - 77%] of x = 52

[100/100 - 77/100] × x = 52

[1 - 0.77] × x = 52

0.23x = 52

Therefore, the required equation is:

0.23x = 52

Hence, option A is true.

7 0
3 years ago
What is the coefficient for the third term in the expansion?
Fantom [35]

Answer:

2196

Step-by-step explanation:

3^2 = 9

9+3^7 = 2196

8 0
2 years ago
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Which diagram is NOT a good model of 3÷1/4?
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Answer:

The diagram with three triangles is not a good representation.

The other diagrams have three parts divided into 4 places. The diagram of the triangles only has 3 parts in each of the three triangles. The equation for that would be 3 divided by 1/3.





Step-by-step explanation:

Have a great rest of your day
#TheWizzer

8 0
2 years ago
Can someone help me plsssss
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Answer:

Sorry I don't know this.

Step-by-step explanation:

8 0
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