4 years ago

Find the two square roots of the number. 64

Mathematics

1 answer:

ikadub [295]4 years ago

5 0

Answer: -8 & 8

Step-by-step explanation:

8•8 =64

(-8)•(-8)=64

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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.

8 0

3 years ago

Which equation could be used to find the perimeter of an isosceles triangle, with two sides 13 cm long, a base 10 cm long, and a

AVprozaik [17]

Its A.
because if the base is 13 and 13 and the sides are 10 cm multiply and get A.

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3 years ago

Someone smart help me please

wolverine [178]

(-5,2) concave up

Hope this helps :)

6 0

3 years ago

A catering company loses $110 as a result of a delay.

faust18 [17]

Answer: Positive

Step-by-step explanation: It would be positive because the question is asking how much money they lost. The lost a positive amount of money.

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1 year ago

2) Convert the Units as shown. Round to the proper precision or accuracy. 1400 yds= Miles? * .79 miles .80 miles O 81 miles 278

MrRissso [65]

Answer:

The answer is 0.79

Step-by-step explanation:

The formula to solve this is divide the length value by 1760

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3 years ago