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BaLLatris [955]
3 years ago
11

Leo buys 5 DVDs for 60$. At this rate, how much would he pay for 3 DVDs?

Mathematics
2 answers:
scoray [572]3 years ago
6 0
\frac{\$60}{5}=\frac{x}{3}\ \ \ \ \ \ |cross\ multiply\\\\5x=3\times\$60\\\\5x=\$180\ \  \ \ \ \ |divide\ both\ sides\ by\ 5\\\\\boxed{x=\$36}\leftarrow answer
Dima020 [189]3 years ago
3 0
60 divided by 5, is 12. In which case, 12 times 3... Is 36$. So Leo would pay 36$ for 3 DVDs at the rate of 12$ for each DVD
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Which of the following line passes through point (-4,5) and is parallel to the line segment whose endpoints are at (-2,-3) and (
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For this case we have that by definition, the equation of a line of the slope-intersection form is given by:

y = mx + b

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b: It is the cut-off point with the y axis

By definition, if two lines are parallel then their slopes are equal.

Then, the requested line will have a slope equal to:

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8 0
3 years ago
5x – 7y= 58<br> y = -x - 2<br><br> X=<br> Y=
amm1812

Answer:

x = 11/3 , y = -17/3

Step-by-step explanation:

Solve the following system:

{5 x - 7 y = 58 | (equation 1)

y = -x - 2 | (equation 2)

Express the system in standard form:

{5 x - 7 y = 58 | (equation 1)

x + y = -2 | (equation 2)

Subtract 1/5 × (equation 1) from equation 2:

{5 x - 7 y = 58 | (equation 1)

0 x+(12 y)/5 = (-68)/5 | (equation 2)

Multiply equation 2 by 5/4:

{5 x - 7 y = 58 | (equation 1)

0 x+3 y = -17 | (equation 2)

Divide equation 2 by 3:

{5 x - 7 y = 58 | (equation 1)

0 x+y = (-17)/3 | (equation 2)

Add 7 × (equation 2) to equation 1:

{5 x+0 y = 55/3 | (equation 1)

0 x+y = -17/3 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 11/3 | (equation 1)

0 x+y = -17/3 | (equation 2)

Collect results:

Answer: {x = 11/3 , y = -17/3

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