An inequality is solved by more than one value - usually an interval, or a union of intervals.
In this case, we have:
Add 14 to both sides:
Divide both sides by 12:
Answer:
66
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
7x/4 -3x/8=11
lets simplify the left hand side 7x/4 -3x/8
first the lcm which is 8
(2)7x-3x/8 = 14x-3x/8 = 11x/8
11x/8 = 11
cross multiply
11x = 8 x 11
divide both sides by 11
x = (8x11)/11 = 8
To answer this question you will set up a system of equations to represent each scenario. Solve for one variable and substitute that in to the other equation to find the missing value. This example will have you solving for p, the price of popcorn.
4p + 3s = 13.50 and 2p + 5s = 12
2p + 5s = 12
-2p -2p
5s = 12 - 2p
5 5
s = 2.4 - 0.4p
4p + 3s = 13.50
4p + 3(2.4 - 0.4p) = 13.50
4p +7.2 - 1.2p = 13.5
2.8p +7.2 = 13.5
-7.2 -7.2
<u>2.8p</u> = <u>6.3</u>
2.8 2.8
p = 2.25
The price of popcorn is 2.25 and the soda is (2.4 - 0.4 x 2.25) $1.50.
5 popcorn and 2 sodas will cost (2.25 x 5 + 1.50 x 2) = $14.25.
<span>8+0.4+0.07+0.008 you basically separate the numbers starting with the largest working down to the smallest.
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