Bear in mind that, (-9) and -9 are very different mammals, we're assuming, you meant (-9)⁻¹.
Answer:
$17
Step-by-step explanation:
initial cost + hourly rate (number of hours)
$5 + $3 x 4
$5 + $12
= $17
A: 0.748≈0.75(.88x.85)
B.1.63 (.88x1.85)
The third diagram is the correct answer.
Answer:
x=5
Step-by-step explanation:
Since this is a right triangle, we can use the pythagorean theorem
a^2 + b^2 = c^2
x^2+ ( 2x+2)^2 = (2x+3)^2
FOIL the squared terms
x^2 +(4x^2 + 4x+4x+4) = 4x^2 + 6x+6x +9
Combine like terms
5x^2+8x +4 = 4x^2 +12x +9
Subtract 4x^2 +12x +9 from each side
5x^2+8x +4 -4x^2 -12x -9= 4x^2 +12x +9-4x^2 -12x -9
x^2 -4x -5 =0
Factor
(x-5) (x+1) = 0
Using the zero product property
x=5 x=-1
But x cannot be negative or we would have negative length
x=5
