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2 years ago

Factor completely 2x^2+6x-80

Mathematics

1 answer:

Rom4ik [11]2 years ago

7 0

Answer:

x= -8 , x=5

Step-by-step explanation:

2x^2+6x-80=0

x^2+3x-40=0

look for 2 numbers that their:

sum = 3

product = -40

(x+8)(x-5)=0

thus

x= -8 , x=5 (ANS)

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SCORPION-xisa [38]

Answer:

y = 3x - 5

Step-by-step explanation:

I used my calculator so that it would be faster.

But if you want work you have to find the slope then plug in.

To find the slope use points (1, -2) and (2, 1) use this formula $\frac{y2 - y1}{x2 - x1}$

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2 years ago

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Aldrine is buying coffee for his coworkers. He orders small and large coffees. Small coffees

kipiarov [429]

Let small cups = S

Large cups = L

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Rewrite as S = 8-L (1st equation)

Then you also have

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$3(8-L) + $5L = $30

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Combine like terms:

24+2L = 30

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-- --

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