Answer:
ummm it think so
Step-by-step explanation:
The third one is correct so it would be C.
Just substitute X and Y into the question.
A = 1/2bh
40 = 1/2 x^2
x^2 = 80
x = 8.9
Answer:
She has 607 nickels
Step-by-step explanation:
40 x 15 + 7 = 607
For finding the perimeter of abc (triangle), we MUST need the two others coordinates of b and c
let b(1, 2) and c (2, -4)
we need to calculate the distances ab, ac, and bc
vector (ab)=(1-(-2), 2-9)=(3, -7), so its length is ab=sqrt(3²+ (-7)²)=7.61
realising the same method, we find bc=6.08, ac=13.60
so the perimeter of abc is P= ab+bc+ca=13.60+6.08+7.61=27.29
