Answer:
23 pounds
Step-by-step explanation:
1.B
2.B
im not sure about this one but ill have to say c sorry if im wrong on 3
4.A i think
A controlled variable is an element that remains unaffected and unchanged by other variables.
:)
Step-by-step explanation:
Yes it is in its simplest form
The picture is how I solved it and it will be correct
BD is half the length of AD ( 18 is half of 36)
BE would be half of EC
EC = 42, so BE would be 42/2 = 21
a = 21