3 years ago

Find the y-intercept of the following equation. Simplify your answer. 25 POINTS WILL MARK BRAIN

Mathematics

1 answer:

Monica [59]3 years ago

3 0

Answer:

Step-by-step explanation:

y=mx+b

b= y-intercept

So 7 is your answer

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Which quadratic equation has solutions x=8 and x=−1?

andrezito [222]

There are two ways you can do this

$Using the formula$

${x}^{2} - (sum \: of \: roots)x + poduct \: of \: roots = 0$

${x}^{2} - (8+-1)x + - 1 \times 8 = 0$

${x}^{2} - 7x - 8 = 0$

$Working backwards$

$x = 8 \: or \: x = - 1$
$\Rightarrow x-8=0 \: or \: x+1=0$

$\Rightarrow (x-8)(x + 1)=0$
$\Rightarrow {x}^{2} + x -8x - 8 = 0$
$\Rightarrow {x}^{2} - 7x - 8 = 0$

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3 years ago

How many numbers between 50 and 500 are divisible by 7?

weqwewe [10]

Answer:

64 numbers

Step-by-step explanation:

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2 years ago

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Luda [366]

You could do:

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So, you would multiply 1790 times 2 and get 3520. The closest thing to 4500 yards is 3520.

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3 years ago

19.5+24+7.5 = 19.5+__+24 = ___+24=___

Rasek [7]

Answer:

7.5, 27, 51

Step-by-step explanation:

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2 years ago

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