3 years ago

F(x)=7x^2-8+9x^4÷x+2

Mathematics

1 answer:

kifflom [539]3 years ago

4 0

Im pretty sure tge answers -1.68426

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Ali is sledding down a hill the graph shows her elevation as she sleds down the hill.

iragen [17]

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The steepness of the hill is a function of the speed of the sled.

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3 years ago

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The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe

mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

$H_0=288$ feet

$V_0=48$ feet

$h(t)=288+48t-16t^2$

Re-arrange the terms from greatest degree to smallest degree.

$h(t)=-16t^2+48t+288$

We can solve it by applying quadratic formula,

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here a = –16, b = 48, c = 288

$$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}$

$$t=\frac{-48\pm \sqrt{2304+18432}}{-32}$

$$t=\frac{-48\pm \sqrt{20736}}{-32}$

$$t=\frac{-48\pm144}{-32}$

Now, write find two t's using plus and minus operation.

$$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}$

$$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}$

t = –3 (or) t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

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2 years ago

A perfect square is a number that has integer square root

Fiesta28 [93]

tr it and it wil; he;p

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2 years ago

2х + y = 20 6x — 5y = 12 How do i solve this? This is Systems of equations: Substitution

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2 years ago

Please help, brainliest, thanks, five star

AnnZ [28]

Answer:

2(3x + 4)

Step-by-step explanation:

2 x 3x = 6x and 2 x 4 = 8

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2 years ago