Pls i need this asap

Mathematics

1 answer:

Goryan [66]3 years ago

6 0

Answer:

It would have to be (C) 50.27 because 25 is too short for a diameter of 8 seeing it would be 8x4 to get 32 in which 25 is not long enough for. So the answer is C.

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What is the length of the missing leg?

sp2606 [1]

Answer:

$a=12$

Step-by-step explanation:

Pythagorean Theorem: $a^{2}+b^{2}=c^{2}$

In this case, a = 9, b = a, and c = 15.

$9^{2}+a^{2}=15^{2}$

$81+a^{2}=225$

The, we subtract 81 from both sides getting:

$a^{2}=144$ ,

Then, $a=12$

6 0

2 years ago

If the angles are represented in degrees, find both angles: sin(x+7)=cos(4x+8)

garri49 [273]

Answer:

$m\angle 1 = 22\degree$

$m\angle 2 = 68\degree$

Step-by-step explanation:

$\sin(x + 7) = \cos(4x + 8) \\ \sin(x + 7) = \sin \{90 - (4x + 8) \} \\ \{ \because \cos \theta = \sin(90 \degree - \theta) \}\\ \therefore \: (x + 7) = 90 - (4x + 8) \\ x + 7 + 4x + 8 = 90 \\ 5x = 90 - 15 \\ 5x = 75 \\ x = \frac{75}{5} \\ x = 15$