Step-by-step explanation:
area of ∆ ACB = 1/2× AB×CP
= 1/2× 16× 21 m²
=8×21m²
= 168m²
optionC
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Answer:
x = 3
Step-by-step explanation:
4(x+7)=9(x-1)+22
Begin solving for x by performing the indicated multiplication:
4x + 28 = 9x - 9 + 22
Combine the x terms:
28 = 9x - 4x - 9 + 22
28 = 5x + 13
Subtracting 13 from both sides isolates 5x:
15 = 5x. Then x = 3
Answer:
The number is 3.
Step-by-step explanation:
5x - 4 = 11
5x = 15
x = 3