Answer:
x = -4
Step-by-step explanation:
Step 1: Write equation
-x + 3 = 7
Step 2: Solve for <em>x</em>
- Subtract 3 on both sides: -x = 4
- Divide both sides by -1: x = -4
Step 3: Check
<em>Plug in x to verify it's a solution.</em>
-(-4) + 3 = 7
4 + 3 = 7
7 = 7
Answer:
It's A
Step-by-step explanation:
Answer:
d. 28
Step-by-step explanation:
7<em>x</em> = 3<em>x</em> + 16
subtract 3<em>x</em> from both sides: 4<em>x</em> = 16
divide both sides by 4: <em>x</em> = 4
plug in four to find length of QA: 3 x (4) + 16 = 12 + 16 = 28
Answer:
D
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
