2 years ago

Factor the following expression. x4 – 3x2 - 4

Mathematics

1 answer:

Liono4ka [1.6K]2 years ago

7 0

(x2 +1) (x2-4) (mark as brainiest)

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Avery Gould is a tailor. He is paid $7.50

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Answer:

90$

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The temperature outside was -12 °. The temperature dropped 3 degrees. What is the new temperature?

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-15

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the new temperature since it went down

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A rock is thrown up from the ground at a velocity of 84 feet per second. The formula h = -16t2 + 84t gives the rock's height in

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Answer:

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Step-by-step explanation:

It is given that,

A rock is thrown up from the ground at a velocity of 84 feet per second. The formula $h = -16t^2 + 84t$ gives the rock's height in feet after t second.

We need to find the maximum height of the rock. For maximum height put $\dfrac{dh}{dt}=0$

So,

$\dfrac{d( -16t^2 + 84t)}{dt}=0\\\\-32t+84=0\\\\t=\dfrac{84}{32}\\\\t=2.62\ s$

Put t = 2.62 s in the equation of height. So,

$h = -16(2.62)^2 + 84(2.62)\\\\h=110.24\ m$

So, the maximum height of the rock is 110.24 m.

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3 years ago

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x=12

Step-by-step explanation:

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