4/(x+1) = 3/x + 1/15
Should we make common denominators with everything, we get
4*15*x / [15x(x+1)] = 3*15*(x+1)/[15x(x+1)] + x(x+1)/[15x(x+1)]
Multiply both sides of the equation by the denominator to cancel them
60x = 45(x+1) + x(x+1)
60x = 45x + 45 + x^2 + x
x^2 - 14x + 45 = 0
(x-9)(x-5) = 0
The answer to this question is that the solutions are x=9 and x=5.
Answer:
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Step-by-step explanation:
$7.9
The correct answer here is that if the skydiver is falling 176 feet per
second, he is falling 10560 feet per minute. This can be worked out
quite easily, by considering that if there are 60 seconds in a minute,
we then need to work out the proportion of 176 feet/1 sec = x/60 sec.
You then need to multiply 60 by 176 to get 10560, which is your answer.
Answer:x=3/9
Step-by-step explanation:
X directly proportional to Y
X=ky
Make k the subject of formula
k=x/y
K=27/81
Divided by 9
K=3/9
