2 years ago

Help please!!! Can someone explain how to solve this please?

Mathematics

1 answer:

Greeley [361]2 years ago

3 0

Answer:

12 the answer

Step-by-step explanation:

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2 years ago

Tania believes that if she increases the price of an item (mark up) by 10% and then decrease it (mark down) by 10%,she will have

dezoksy [38]

She is incorrect as 10% of the higher marked up price is larger than 10% of the original price.

For example: If you mark up $100 by 10% you get $110.

If you mark down $110 by 10%, you will get $99, as 10% of $110 ($11) is larger than 10% of $100 ($10).

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2 years ago

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ch4aika [34]

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2 years ago

Solve by substitution<br> 3x-4y=-4<br> y=2x-4

dybincka [34]

Answer:

x=4 and y=4

Step-by-step explanation:

From first function we have:

$3x - 4y = - 4 \\ 4y = 3x + 4$

And from the second one:

$y = 2x - 4 \\ 4y = 8x - 16$

Substitute them:

$4y = 3x + 4 \\ 4y = 8x - 16 \\ \\ 0 = - 5x + 20 \\ x = 4 \\ y = 4$

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2 years ago

Which equation represents a line that has a slope of 3/4 and passes through the point (2,1)?

ValentinkaMS [17]

The general equation of a line is:
$\frac{y- y_{1}}{x- x_{1}} =m$
When m is the gradient and x1 and y1 are the coordinates of the points on the line
Therefore:
$\frac{y-1}{x-2}=3/4$
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2 years ago