3 years ago

Write an equation in point-slope form: (-2,-3) and (8,-8).

Mathematics

1 answer:

viva [34]3 years ago

7 0

Answer:

y + 9 = 6(x - 4)

Step-by-step explanation:

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Irina18 [472]

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3 years ago

How do you factor quadratics by grouping

Kaylis [27]

Here's an example Its also call the 'ac' method:-

factor 2x^2 - 13x - 15

Multiply first coefficient by last number which is 2*-15 = -30

Now we need 2 factors of -30 which will when added give - 13:-

-15 and 2 looks good. So we can write:-

2x^2 - 13 x - 15

= 2x^2 + 2x - 15x - 15

factor by grouping first 2 and last 2 terms , we get:-

= 2x(x + 1) - 15(x + 1)

the x+1 is common so we have:-

(2x - 15)(x + 1) Answer

Hope this helps.

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2 years ago

Joe can clear a lot in 2.5 hours. His partner can do the same job in 7.5 hours. How long will it take them working together?

irina [24]

Answer:

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