Answer:
b = 3, which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0.
Step-by-step explanation:
The minus common multiply must be (b-3)*(b+3) = b² - 9
7b - 21 + 5b + 15 = 10b
2b = 6
b = 3
Which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0. So this solution is invalid.
Answer:
$27.32
Step-by-step explanation:
25.30 x.08= 2.02
add 2.02 to 25.30 =
$27.32
NL= 2x-2
x=7
2 (7)-2
14-2
NL=12
x=7 because the angle is 90°
so 9x+27=90
-27 both sides
9x=63
÷9 both sides
x=7