- linear pairs are supplementary, meaning they add up to 180°
5x + 9 + 3x + 11 = 180
8x + 20 = 180
8x = 160
x = 20
- now plug in.
angle 1: 5(20) + 9 = 100 + 9 = 109°
angle 2: 3(20) + 11 = 60 + 11 = 71°
Here's are the steps to solving it.
3-a+5-2a=17
-3a=9
a=-3
The answer would be true.
Answer:
x = 4
Step-by-step explanation:
Step 1: Write equation
-72 = 3(-4x - 8)
Step 2: Solve for <em>x</em>
<u>Distribute 3:</u> -72 = -12x - 24
<u>Add 24 to both sides:</u> -48 = -12x
<u>Divide both sides by -12:</u> x = 4
Step 3: Check
<em>Plug in x to verify if it's a solution.</em>
-72 = 3(-4(4) - 8)
-72 = 3(-16 - 8)
-72 = 3(-24)
-72 = -72
The answer is acute this is because if there is two longer sides and a short side that makes the triangle acute
