You do the sum(40) subtracted by 8, the answer from that divided by 2 since Erin's two times younger.
40-8=32
32÷2=16
Then if you want to check it you do the opposite and get the same sum(40) so 16×2=32 and 32+8=40
5*(60+3)
You should write 63 in this way 60+3
Answer:
-147
Step-by-step explanation:
(21) • (-7)
Since it’s a positive times a negative, the answer will be negative
-147
Answer:
and x=9
Step-by-step explanation:
We can see that the triangle is a special triangle or isosceles triangle meaning that two angles/ two sides are the same.
To solve for x use Pythagorean Theorem.
a^2 + b^2 = c^2.
