2 years ago

27/8+11/3 please help

Mathematics

1 answer:

a_sh-v [17]2 years ago

8 0

Answer:

The answer is 7 1/24

Step-by-step explanation:

27/8 + 11/3

I multipled 27/8 by 3/3 (needed the 8 to become 24)

I multiplied 11/3 by 8/8 (needed the 3 to become 24)

We get:

81/24 + 88/24

Then you add

169/24

Simplify

7 1/24

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Answer:

The answer is 23

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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

Subtract (x^2+5-6)-(-2x^2-3x-7) explain each step

Anvisha [2.4K]

Your answer is 3x^(2)+3x+6

Hope this helped!

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2 years ago

HELP

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Answer:

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Step-by-step explanation:

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Answer :

1 (i).
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(ii).
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(iii) .
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2(i).
$slope \: = 2$
$gradient \: = - \frac{1}{2}$
I Hope it helps :)

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3 years ago