Answer:
C. 3, -7
Step-by-step explanation:
x^2 +4x-21 =0
Factor
What 2 numbers multiply to -21 and add to 4
7*-3 = -21
7-3 = 4
(x+7) (x-3) =0
Using the zero product property
x+7 =0 x-3=0
x+7-7=0-7 x-3+3=0+3
x = -7 x=3
Answer:
∠1 = 66°
Step-by-step explanation:
∠1 + ∠3 = ∠4 (exterior angle theorem)
∠1 + 57° = 123°
∠1 = 66°
Answer: hahahahahaha
Step-by-step explanation:
Hahahahaha mines more cringe ;)
Answer:
12/7=x
Hope this helps :)
Step-by-step explanation:
1. subtract 7 from both sides of the equation.
2.Simplify.
3. Divide both sides of the equation by the same term.
4.Simplify.