The easiest thing to do here is to split into two right triangles. The split will occur at x=1.

A= (base times height) / 2

Height of both is 3

Base of left is 6

Base of right is 3

(6*3)/2 = 9

(3*3)/2 = 4.5

Now, add together.

9 + 4.5 = 13.5 sq units

**Step-by-step explanation:**

4x + 8y = 40

4x + (8×0.8) = 40

4x + 6.4 = 40

4x = 33.6

4x÷4 = 33.6 ÷ 4

x = **8.4**

**Answer:**

c

**Step-by-step explanation:**

**Answer:**

0.8064

**Step-by-step explanation:**

0.112 × 7.2 = 8064 (this is before the decimals are added)

- move the decimal 4 spaces to the left because the two decimals provided are 4 spaces in total.

I hope this helps!!!

**Answer:**

= 0

**Step-by-step explanation:**

-3 = x^2 + 4x + 1

0 = x^2 + 4x + 4

a = 1

b = 4

c = 4

plug the numbers into the equation to find the discriminant value...

4^2 - 4(1)(4)

16 - 16 = 0

therefore your answer is 0

PLEASE RATE!! I hope this helps!!

If you have any questions comment below