area of triangle=1/2(p×b)=1/2(17×17)=144.5cm²
area of rectangle=l×b=(10+17+7)×17=578cm² is the correct answer to the question
Answer:
#9: 10.5
Step-by-step explanation:
128 / 12
(Only did #9 because I don't have enough brain power to do the other one, hope you find someone else to do that.)
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d=10
Solution given:
squaring both side
25+3x=(d+2x)²
when x=-3
25+3*-3=(d+2*-3)²
25-9=(d-6)²
16=(d-6)²
4=d-6
d=4-6