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Goshia [24]
2 years ago
7

A store that buys and sells used video games buys a game at a cost of ​$19 and sells it at a selling price of ​$22. Find the mar

kup. Then find the percent markup.
Mathematics
1 answer:
bija089 [108]2 years ago
8 0
3 is the correct answer
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Describe and correct the error in solving the following rational equation , plz help!!!!!
aleksley [76]

First of all, x cannot ever equal -1 because if it does then in the original equation you'd be dividing by 0, which is not possible. anything divided by 0 is undefined.

I think the error was in the second step: x(x+1) = 2(x+1) because they didn't need to go from the first step to there. I'm assuming they multiplied both sides of the equation with (x+1) to get rid of the fraction, but since both sides have (x+1) as the denominator the (x+1) would've cancelled out instead of multiplying with the numerator.

Correction:

\frac{x}{x+1} = \frac{2}{x+1}\\(\frac{x+1}{1}) (\frac{x}{x+1}) = (\frac{2}{x+1})(\frac{x+1}{1}) \\x = 2

as u can see, in the second step of this correction, the (x+1)s on both sides cancel out so only the numerators remain.

Hope this helps!

5 0
2 years ago
A plane traveled for a total of 1,190 miles over the course of 5 hours. Heading east, the plane traveled at an average speed of
bezimeni [28]
Two equations are:
Te is time east
Tn is time north

Te + Tn = 5 hours
266Te +196Tn = 1190 is the distance equation

Solve these two equations and
Te = 3 hours and Tn= 2 hours
8 0
3 years ago
use digits to write a number for the following. : seven tenths . three hundreths, and eight thousandths and then (. )​
kondor19780726 [428]

Answer:

0.0378

Step-by-step explanation:

#;+*($$&#(#'#)#&#)#&#-#)#8#&2'#;$7$5$&

7 0
2 years ago
A student uses the ratio of 4 oranges to 6 fluid ounces to find the number of oranges needed to make 24 fluid ounces of juice. T
Katyanochek1 [597]
<span>The answer is: The second ratio in the proportion is set up as ounces over oranges. The units should be in the same place in the proportion as the first ratio.</span>
8 0
2 years ago
Read 2 more answers
paul and sue received a total of $400. The amount received by sue was eighthy dollars less than 3 times the amount received by p
kiruha [24]

Paul $120 Sue $280

120x3=360   360-80=280

3p-80+p=400

4p-80=400

4p=480

p=120    s=280

3 0
2 years ago
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