3 years ago

(2) Mele scored 70% on

Mathematics

1 answer:

Katen [24]3 years ago

5 0

She got 7/10 of the question right.

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Daniel worked for 2 1/3 hours and earned $18.20. How much would he make if he worked for 5 1/4 hours? Enter your answer in the b

Aleks04 [339]

2 1/3hrs→ $18.20
1 hr→ $7.80
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3 years ago

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3 years ago

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Svetllana [295]

The first two are alike because you have to add 3 to each side for everything to come out even.

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Elena-2011 [213]

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2 years ago

What are the x-intercepts of y=x^2+2x-15

Sedbober [7]

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$(-5,0)$ and $(3,0)$

Step-by-step explanation:

Think about it.

What two numbers multiply to -15 and add up to 2?

The answers are 5 and -3.

So plug that into the factored form of a parabola.

$y=(x+5)(x-3)$

To find the x-intercepts, plug in 0 for $y$ .

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Since we are multiplying, at least one of the terms has to equal 0.

$x+5=0 \\ x-3=0 \\ \\ x=-5,3$

So the x-intercepts are $(-5,0)$ and $(3,0)$ .

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