Answer:
C
Step-by-step explanation:
A = 
r²
so we do
5² = 25 *
25 *
= 78.5 square units
Answer: X = 1/4 or X = -1
Step-by-step explanation:
4x2+3x−1=0
(4x−1)(x+1)=0
4x−1=0 or x+1=0
4x=1 or x=-1
Now divide 4 from both sides
like this 4x/4=1/4
now cancel out two 4's so the answer will be x=1/4
Answer:
Its about 88%
Step-by-step explanation:
I got this answer by doing 37/42. :)
Answer: 54.17
Step-by-step explanation:
7a+21=56
Begin by subtracting 21 on both sides:
21-21=0 so the 21 in the left cancels, then 56-21=35
Your new equation will be
7a=35
Finally, divide by 7 on both sides:
7/7=1 and 35/7=5
your answer will be
a=5
