Answer:
15
Step-by-step explanation:
12 X 15 is 180, which is closest to 187, we have to add a 5 in the space next to 71 and 180 under 187
Answer: d. 2.52
Step-by-step explanation:
5x = 30.16 - 17.56
5x = 12.6
X = 12.6/5 = 2.52
I'm pretty sure you're supposed to use Pythagorean Theorem, so here goes:
a^2+b^2=c^2
=8^2+b^2=10^2
=64+b^2=100
=b^2=100-64
=b^2=36
=b=6
So, AD=6
Then, 6*2=12
AC=12cm
Answer:
390 cm squared
Step-by-step explanation:
15 x 20 = 300
1/2 x 15 x 12 = 90
90 + 300 = 390
