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maksim [4K]
3 years ago
13

Please help me please I really need help

Mathematics
2 answers:
tatyana61 [14]3 years ago
5 0

Answer:

(5x-7)(9x²-4x-8)

=5x(9x²-4x-8)-7(9x²-4x-8)

=45x³-20x²-40x-63x²+28x+56

=45x³-83x²-12x+56

Over [174]3 years ago
5 0

Answer:

45x³-83x²-17x+56

Step-by-step explanation:

(5x-7)(9x²-4x-8)

5x(9x²-4x-8) -7 (9x²-4x+56)

45x³-20x²-45x-63x²+28x+56

45x³-83x²-17x+56

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vovangra [49]
The ? Is 11.


You add the equations to get rid of one variable, then you have 6x=24 then you divide both sides and you have x=4, then you substitute the given value of x and you are left with 5*4 - y = 9. And the solution or well possible solution is y = 11 which gives youuuuu. (x , y) = (4 , 11)
4 0
3 years ago
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Jacqueline earned a commission of $200 for one week at work. her commission rate is 12% of the merchandise she sells. how much m
guajiro [1.7K]

For this case, the first thing we must do is define variables.

We have then:

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We then have the following idea:

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We have then:

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Clearing m we have:

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  Answer:

The equation that solves the problem is:

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The amount she sold is:

m = 1666.7

3 0
3 years ago
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Write x ² +6X = -5 in general form
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3 years ago
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