X will equal 40.
EXPLANATION: since they’re parallel and these are opposite angles, add them together to equal 180.
x+(20)+3x=180.
add common variables.
4x+20=180
subtract 29 from both sides
4x=160
divide each side by 4 so isolate x
x=40
Answer:
Step-by-step 12explanation:
12
100/x=60/30 so x=100*30/60=50
Answer:
20 : 9
Step-by-step explanation:
Given the ratio
2 : 
Multiply both parts of the ratio by 10 to clear the fraction
= 20 : 9
X- 3.5 = 5.25
X = 8.75 (Add 3.5 to both sides)
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