Write and solve an equation to find the value of X
2 answers:
Angles on a straight line add up to 180 degrees so
45 + 3x = 180
Subtract 45 from both sides to remove the 45 on the left
3x = 135
Then divide both sides by 3
x = 45
Answer is X = 45
Answer:
45 + 3x = 180
x = 45
Step-by-step explanation:
45 + 3x = 180
3x = 180 - 45
3x = 135
x = 135/3
so, x = 45
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(2x - 6) - (10x - 7) # Starting expression
-8x - 1 # Combine like terms
Final answer:
-8x - 1
Hope this helps!
B= 30
a2+b2=c2
72^2+b^2 = 78^2
5184+b^2 = 6084
b2 = 900
b = 30
Answer:
yes
Step-by-step explanation:
Girls:
12 girls out of 30
12/30
Divide the top and bottom by 6
2/5
Boys
16 out of 40
Divide the top and bottom by 8
2/5
You probably know that for 
, we have
Your sum starts at 
, so it's equivalent to
so the answer is A.
