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1 year ago

4/5 HELP! Find the missing side. Round to the nearest tenth

Mathematics

1 answer:

yawa3891 [41]1 year ago

8 0

Answer:

x ≈ 18.9

Step-by-step explanation:

using the cosine ratio in the right triangle

cos19° = $\frac{adjacent}{hypotenuse}$ = $\frac{x}{20}$ ( multiply both sides by 20 )

20 × cos19° = x , then

x ≈ 18.9 ( to the nearest tenth )

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3 years ago

Trying to finish this test at 3:30 am plz help

Angelina_Jolie [31]

Given:

The given sum is:

$\sum _{k=4}^9(5k+3)$

To find:

The expanded form and find the sum.

Solution:

We have,

$\sum _{k=4}^9(5k+3)$

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7 0

3 years ago

What two consecutive odd integers have a sum of 88?

Sindrei [870]

Answer:

What two consecutive odd integers have a sum of 88? x + x + 2 = 88 • 2x + 2 = 88 • 2x = 86 • x = 43, x + 2 = 45 • 43 + 45 = 88 • Ans: 43, 45 • They equal 88 and are both odd.

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3 years ago

The terminal ray of angle β , drawn in standard position, passes through the point (−5, 2√7) . What is the value of cos β ? Ente

Alexxx [7]

Step-by-step explanation:

Draw the triangle formed by the ray.

The hypotenuse of the triangle is:

c² = a² + b²

c² = (-5)² + (2√7)²

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Therefore:

cos β = -5 / √53

Or, as a proper fraction:

cos β = -5√53 / 53

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3 years ago