(10x + 4) + (5x-4) ≈ 180
solve for x and you get x≈12
plug 12 in to 5x-4 and you get 56
Answer:
SQUARE 1:
100% ; 75%
Step-by-step explanation:
SQUARE 1:
If each square represents a whole ; the percentage of a whole = 100%
Dividing the square into 4 equal parts :
Percentage of each part :
100% ÷ 4 = 25%
Percentage represented by the shaded part:
(Percentage of each shaded part * number of shaded part)
(25% * 4) = 100%
SQUARE 2:
each square represents a whole ; the percentage of a whole = 100%
Dividing the square into 4 equal parts :
Percentage of each part :
100% ÷ 4 = 25%
Percentage represented by the shaded part:
(Percentage of each shaded part * number of shaded part)
(25% * 3) = 75%
Answer:
(25*9)/52
Step-by-step explanation:
Answer:
x = 6 x = -7
Step-by-step explanation:
Subtract 12 from each side:
x^2 + x - 30 - 12 = 12 - 12
Simplify:
x^2 + x - 42 = 0
Solve with quadratic formula using both +/- after the first -1:
x = 
Simplify:
x = 6
x = -7
