All you need to do is cross multiply for each one and then solve

and

then you solve which gives you 3 and 4 for your missing values
Evaluating 3^3/2 gives us 5.196152423, so we can round this to 5.
Answer:
80
Step-by-step explanation:
every triangle adds up to 180 sort of, in this case, turn 4 into 40. 40+20=60 so add 80 to be 180!!!
Add 1/4a to both sides
-4= 8/4a-3
Simplify
-4=2a-3
Add 3 to both sides
-1=2a
Divide both sides by 2
-1/2=a
Final answer: a=-1/2
Answer:
x = 6
Step-by-step explanation:
<u>Step 1: Distribute
</u>
2(3x + 2) = 2x + 28
(2 * 3x) + (2 * 2) = 2x + 28
(6x) + (4) = 2x + 28
<u>Step 2: Subtract 2x from both sides
</u>
6x + 4 - 2x = 2x + 28 - 2x
4x + 4 = 28
<u>Step 3: Subtract 4 from both sides
</u>
4x + 4 - 4 = 28 - 4
4x = 24
<u>Step 4: Divide both sides by 4
</u>
4x / 4 = 24 / 4
<em>x = 6
</em>
Answer: x = 6