Since you are solving for x, you need to isolate x on one side of the equation. Start by subtracting C from both sides.
0 = x + a / b - C
Subtract x from both sides to have it on the left side of the equation.
-x = a / b - C
Make x a positive number by dividing both sides by negative one.
x = - a / b + C
A better way of writing this answer would be: 
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Answer:
210
Step-by-step explanation:
LCM of 42sec and 30 sec=210 sec
Answer:
Therefore the answer is B)
Step-by-step explanation:
so we have to find the inverse function.
g(x) = -1/(x-2) +3
y = -1/(x-2) +3
x = -1/(y-2)+3
x - 3 = -1/(y-2)
(x - 3)^-1 = -(y-2)^-1*-1
1/(x-3) = -y+2
1/(x-3) -2 = -y
-1(-y) = -1[1/(x-3) -2]
y = -1/(x-3) + 2
or y = 1/(-x+3) + 2
Matches B)
Answer:
4 + 2 + q - 1 + q = 15
Step-by-step explanation:
P = 4 + 2 + q - 1 + q = 15
Answer:
20
Step-by-step explanation:
The cost of the x mangoes was ...
c = 10(x/4)
The revenue from the sale of mangoes was ...
r = 20(x-5)/5
The profit is the difference between revenue and cost:
10 = r - c = 20(x -5)/5 -10(x/4) = 1.5x -20 . . . . substitute and simplify
30 = 1.5x . . . . . add 20
20 = x . . . . . . . .divide by 1.5
The trader bought 20 mangoes.
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<em>Check</em>
He paid 20(10/4) = 50 naira. He sold the 15 good mangoes for 20/5(15) = 60 naira, so made a 10 naira profit.
