4 years ago

(2x-y) ( x-8y+7) how do I solve this problem ?

1 answer:

5 0

(2x - y)(x - 8y + 7) =
2x(x - 8y + 7) - y(x - 8y + 7) =
2x^2 - 16xy + 14x - xy + 8y^2 - 7y =
2x^2 - 17xy + 8y^2 + 14x - 7y <===

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Allisa [31]

Slope formula: y2-y1/x-x1

We can use the given points to solve.

3-(-3)/7-5

6/2

Best of Luck!

4 0

3 years ago

pogonyaev

Plug the 3 in for x because x=3 so it’ll be 6(3)+7 and that equals 25

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3 years ago

LiRa [457]

This answer should help.

4 0

3 years ago

Ira Lisetskai [31]

$\text{Given that,}~ f(x) = 2x -1~ \text{and}~ g(x) = x^2- 3x -2 \\\\\text{Now,}\\\\~~~(f+g)(x)\\\\=f(x) + g(x)\\\\=2x-1 +x^2 -3x -2\\\\=x^2 -x -3$

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2 years ago

olga2289 [7]

Answer: AC=4.15

Step-by-step explanation:

To solve this problem you must apply the prccedure shown below:

1. You know that the triangle is a right triangle.

2. Therfore, you can calculate the lenght AC as following:

$tan\alpha=opposite/adjacent$

Where:

opposite=AC

adjacent=8.9

3. When you solve for AC and substitute these values you obtain the following result:

$AC=8.9*tan(25\°)\\AC=4.15$

3 0

3 years ago