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3 years ago

Can someone help me . many points. also plz explain your answer.

Mathematics

1 answer:

Oxana [17]3 years ago

5 0

These are complementary angles, meaning they add up to 180
Let's write an equation
180=38 + 42 + (2x+10)
subtract 38 from both sides
142 = 42 + 2x + 10
subtract 42 from both sides
100 = 2x + 10
subtract 10 from both sides
90 = 2x
divide both sides by 2
45 = x
Plug that back into the angle
2x+10
2(45)+ 10
90 + 10
100
The angle is 100 degrees.

To check:
180 =?= 38 + 42 + (2x+10)
180 =?= 38 + 42 + (2(45) + 10)
180 =?= 80 + (90 + 10)
180 =?= 80 + 100
180 = 180

Hope this helps :)

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Step-by-step explanation:

Given 7b²-21b-273=7, first you need to equal zero. So

7b²-21b-273-7=0 ⇒ 7b²-21b-280 = 0

The secon step is to find the solutions applying Bhaskara´s formula x = (-b ± √(b²-4×a×c))/2×a

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After you identified each term, you have to replace it on the formula so....

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xenn [34]

The method which is used to solve the provided equation using the distributive property is,

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<h3>What is distributive property?</h3>

The distributive property is to make something easier to do or understand and to make something less complicated.

The given expression is $\rm - 0.2(x-4) = -1.7$ .

The expression can be written as

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Divide both sides by 0.2

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Add 4 both sides, we have

$\rm x = 4 + 8.5 = 12.5$

Thus, the value of x is 12.5.

More about the distributive property link is given below.

brainly.com/question/13130806

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Answer:

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Step-by-step explanation:

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The radius of the cylinder can be computed using the formula of the volume of a cylinder

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