Answer:
The number is 7.
Step-by-step explanation:
5x-28=x
5x-x=28
4x=28
x=28/4
x=7
Answer:
78
Step-by-step explanation:
I'm really good at these
Answer:
-2, (-5 is extraneous)
Step-by-step explanation:
assuming √(x+6) -4 =x
√(x+6) = x+4
square both side
x+6 = (x+4)^2
x+6 = x^2+8x+16
x^2+7x+10=0
(x+2)(x+5) = 0
x = -2, -5
put -5 back into org equation and it is not true
√(-5+6) -4 ≠ -5
Answer:
7 in
Step-by-step explanation:
perimeter = 2length + 2width
Input the given info:
24 = 2length + 2(5)
24 = 2L + 10
14 = 2L
14/2 = L
l = 7
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take a factor of 6 out to make 6(4x-3)