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earnstyle [38]
3 years ago
8

Solve for x and round to the nearest tenth

Mathematics
1 answer:
Mila [183]3 years ago
4 0

9514 1404 393

Answer:

  88.9

Step-by-step explanation:

The relevant trig relation is ...

  Cos = Adjacent/Hypotenuse

  cos(77°) = 20/x

  x = 20/cos(77°)

  x ≈ 88.9

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7 0
4 years ago
Please help me with all these questions . I really appreciate it but if you don't how to do it please comment don't answer the q
frozen [14]
For number 1, add the sides of the triangle. They are all given. The answer is 19.

For number 2, you use the formula for circumference, 2 times pi times radius. The answer is 43.96.

For number 3, I assume that 5 is half of one side. You would double 5 to get ten and multiply it by four, since there are four sides in a square. The answer is 40.

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8 0
3 years ago
Read 2 more answers
Using the equation y = 2x – 3, what would the input need to be for an output of 7?
Keith_Richards [23]

Answer:

5

Step-by-step explanation:

We have an equation and are asked to find the input of x when y = 7.

The output = y = 7

The input = x

7 = 2x - 3

2x - 3 = 7

We need to find a number that multiplied by 2 which then is subtracted by 3 equals 7. We can use the backwards method  to solve our answer.

2x - 3 = 7

7 + 3 = 2x

10 = 2x

Solve for x by dividing 2 from both sides :

x = 5.

Therefore, you would need an input of 5 to get 7 as the output.

Proof :

2(5) - 3 = 7

10 - 3 = 7

8 0
3 years ago
Read 2 more answers
HELPP<br> Asap I’ll mark you as brainlister
Dafna11 [192]
A-F
(A line drawn from a center of the circle to the circumference forms the radius)
Hope this helps
Mark me as brainliest :]
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3 years ago
Does anyone know the answer to this i need help really bad!!!
ziro4ka [17]

Step-by-step explanation:

  • 1/2
  • 0.5 is yr ans

<h2>stay safe healthy and happy...</h2>
4 0
3 years ago
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