Simplify: (7x2 − 8x − 4) + (−2x2 + 3x + 5) + (5x2 − 10x − 8)

1 answer:

3 0

(7x² − 8x − 4) + (-2x² + 3x + 5) + (5x² - 10x - 8) =
7x² − 8x − 4 - 2x² + 3x + 5 + 5x² - 10x - 8 =
10x² -15x -7

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GaryK [48]

We have that
1/4 x + 2/3 y = 5 ----> multiply by 12 both sides---> 3x+8y=60
1/2 x + 3/2 y = 11---> multiply by 2 both sides----> x+3y=22

therefore

the answer is the option
B. 3x + 8y = 60 ; x + 3y = 22

8 0

4 years ago

Read 2 more answers

Find the coordinates of a point that divides the directed line segment PQ in the ratio 5:3. A) (2, 2) B) (4, 1) C) (–6, 6) D) (4

Yuri [45]

Answer:

The answer is explained below

Step-by-step explanation:

The question is not complete we need point P and point Q.

let us assume P is at (3,1) and Q is at (-2,4)

To find the coordinate of the point that divides a line segment PQ with point P at $(x_1,y_1)$ and point Q at $(x_2,y_2)$ in the proportion a:b, we use the formula: