Answer:
a^2
−10a+21
Step-by-step explanation:
(a−7)(a−3)
Apply the distributive property by multiplying each term of a−7 by each term of a−3.
a^2
−3a−7a+21
Combine −3a and −7a to get −10a.
a^2
−10a+21
Answer:
x= 3x=17/4
Step-by-step explanation:
We need to isolate x in order to find x. However, we need to have common denominators first.


Multiply by 30 on both sides.

Divide by 5 on both sides to isolate x.
Answer:
(D) 100
Step-by-step explanation:
(A) 16 = 1+3+5+7
(B) 40 =7+9+11+13
(C) 72=15+17+19+21
(D) 100
(E) 200=47+49+51+53
what is 2 1/2 divided by 2 1/6
2 (1/2)÷2 (1/6)=125