Answer:
if your solving for a its a=10b/9
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
2² x 2³ = 2^x
Laws of indices states that when the base is same the powers can be added when two terms are multiplied,
2^(2+3) = 2^x
2⁵ = 2^x
x = 5
Answer:
5 inches per hour
Step-by-step explanation:
Answer:
x = 16
Step-by-step explanation:
(x +4) : (x +12) :: (x-1)(x +5)
As they are in proportion,
Product of means = Product of extremes
(x + 4)* (x +5) = (x + 12)(x - 1) {Use FOIL method}
x*x +x*5 +4*x + 4*5 = x *x + x*(-1) +12*x + 12*(-1)
x² + <u>5x + 4x</u> + 20 = x² <u>- x +12x</u> - 12 {Now combine like terms}
x² + 9x + 20 = x² + 11x -12
x² + 9x +20 - x² - 11x = -12
x² - x² + 9x - 11x = -12 - 20
0 - 2x = - 32
-2x = -32 {Divide both sides by -2}
x = -32/-2
x = 16
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