A)a = 5 and c = 7

B) a = 3 and c = 3

C) b = 7 and c = 5

D) b = 5 and c = 3

**Answer : b = 5 and c = 3**

The cosine formula is

Given equation has cos(B) so we put b^2 before the = sign

So the formula becomes

Compare the given equation with the above cosine formula

The value of b = 5, a= 7 and c=3

So, b = 5 and c = 3

**Answer:**

m = 11

**Step-by-step explanation:**

-2(2 - 4m) = 6(m + 3)

Divide both sides by -2.

2 - 4m = -3(m + 3)

Distribute -3 on the left side.

2 - 4m = -3m - 9

Add 3m to both sides.

2 - m = -9

Subtract 2 from both sides.

-m = -11

Divide both sides by -1.

m = 11

I think the answer might be 12

**Answer:**

**<em><u>Hope </u></em>****<em><u>it </u></em>****<em><u>helps </u></em>**

If 1/2 hours half an hour is 7/8 gallons, then one whole hour 2/2 = 7/8 × 2 = 14÷8 = 1.75 gallons per hour.