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solniwko [45]
4 years ago
6

I need some help with this!

Mathematics
1 answer:
Dimas [21]4 years ago
3 0

(-x³ +3x +4) -(2x³ +7x² -9) = -x³ +3x +4 -2x³ -7x² +9 . . . . eliminate parentheses

= x³(-1-2) +x²(-7) +x(3) +(4+9)

= -3x³ -7x² +3x +13 . . . matches the second choice.

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What is the value of x in the diagram?
Ksenya-84 [330]
The red arrows mean the lines are parallel. Since all angles are equal, the larger triangle is similar to the smaller one. Then corresponding sides have the same ratio
(4x -2)/9 = (3x+2)/12
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x = (7/18)/(7/36) = 2 . . . . . . . . . corresponding to the 3rd selection
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3 years ago
Find an equation in slope-intercept form of the line that has slope –8 and passes through point A (1, 5)
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Answer:

Step-by-step explanation:

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3 years ago
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6 0
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Read 2 more answers
Y=1/3x-3<br> Y=-x+5 <br> How do I solve
ehidna [41]

Since both equations are equal to y, we can just combine them like this:

1/3x-3=-x+5

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Plug x back in:

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So x=6 and y=-1

Hope this helped!

4 0
3 years ago
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