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3 years ago

In this triangle, what is the value of x

Mathematics

2 answers:

Bogdan [553]3 years ago

7 0

75.7 cm good luck!!!!!!!!!!!!

shutvik [7]3 years ago

5 0

Answer:

75.7 cm

Step-by-step explanation:

$\sin \: 63 \degree = \frac{x}{85} \\ \\ 0.8910065242 = \frac{x}{85} \\ \\ x = 0.8910065242 \times 85 \\ \\ x = 75.7355546 \\ \\ x = 75.7 \: cm$

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If f(x)=(2x^2)-1, find:<br> -f(3x-1)+2

Sergeeva-Olga [200]

Answer:

-f(3x - 1) + 2 = -18x² + 12x + 1

Step-by-step explanation:

Step 1: Find f(3x - 1)

f(3x - 1) = 2(3x - 1)² - 1

f(3x - 1) = 2(9x² - 6x + 1) - 1

f(3x - 1) = 18x² - 12x + 2 - 1

f(3x - 1) = 18x² - 12x + 1

Step 2: Plug in f(3x - 1)

-(18x² - 12x + 1) + 2

Step 3: Evaluate

-18x² + 12x - 1 + 2

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3 years ago

Read 2 more answers

I WILL GIVE BRAINLY!!!!!!!!!

kenny6666 [7]

Answer: C. 5(6) + 0.65y

Step-by-step explanation:

Process of elimination.

65% of y = 0.65y

A has 65y, completely incorrect.

B has 6y, also completely incorrect.

<u>C has 0.65y, correct.</u>

D has 1.65y, also completely incorrect.

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3 years ago

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Here you would want to use the sine function, since it’s making a triangle with the ground, and length of the string, the height to the kite. This can be found by 65sin(70°) which is ≈ 61.08 meters

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