**Answer:**

4/5

**Step-by-step explanation:**

The cosine of the angle is found as the ratio of adjacent to the hypotenuse.

To find it first find the sin 45 = √8/ x. This is equal to 4.

sin 45 = √8/ x

x = √8/ sin 45

x = 4

This means the triangle FHE has side lengths 3, 4, and 5.

The cosine of FHE will be FH / HE. This is 4/5.

**Answer:**

v = 120

**Step-by-step explanation:**

If v is inversely proportional to square root of d, then we can write

= k

If v = 30 and d = 400, then

30() = k

k = 30(20) = 600

Now = 600

If d = 25, then v = 600

5v = 600

v = 120

Answer:

I think the answers would be B and C.

Step-by-step explanation:

When you simplify 3^3 you get 27. Then your also going to simplify 8^3 and you’ll get 512. You’ll end up with 27/512.

So the answers that also equal to 27/512 is B and C. Hope this helps :))

**Answer:**

A

**Step-by-step explanation:**

**Answer: **− 18 x= 72

**Step-by-step explanation:**