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2 years ago

What is the surface area of this cone?

Mathematics

1 answer:

DanielleElmas [232]2 years ago

8 0

surface area of this cone?

Use A= 3.14 and round your answer to the nearest hundredth

9 ft

6 ft

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If rounded to the nearest tenth 47.098

Nataliya [291]

47.098 rounded to the nearest tenth is 47.1

3 0

2 years ago

A baseball is hit into the air, and its height h in feet after t seconds is given by h(t)= -16t^2+128t+2. The height of the bas

tankabanditka [31]

Answer:

$\large \boxed{\sf \ \text{2 feet, 4 seconds, 258 feet } \ }$

Step-by-step explanation:

Hello,

To know the height of the baseball when it is hit we have to compute h(0), as t = 0 is when the baseball is hit into the air.

$h(0)=-16\cdot 0^2+128 \cdot 0+2=2$

So, the answer is <u>2 feet.</u>

<u />

h(x) is a parabola which can be written as $ax^2+bx+c$ , it means that the vertex is the point (-b/2a,h(-b/2a)).

The baseball reached its maximum height after

$\dfrac{-b}{2a}=\dfrac{-128}{-2*16}=\boxed{4 \text{ seconds}}$

And the maximum height of the baseball is h(4).

$h(0)=-16\cdot 4^2+128 \cdot 4+2=-256+512+2=\boxed{258 \ \text{feet}}$

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

8 0

3 years ago

1/3x+6=-18+3x PLEASE HURRY I HAVE A TEST

ivann1987 [24]

Answer:

x=9 Hope this helps :)

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Subtract 3x from both sides.

Step 3: Subtract 6 from both sides.

Step 4: Multiply both sides by 3/(-8).

And you get x=9

6 0

2 years ago

QUICK HELP PLEASE!!!!

Ksenya-84 [330]

I believe the answer is A

3 0

2 years ago

Please I really need help my grade depends on it

DochEvi [55]

Answer:

Step-by-step explanation:

Given the solution

2 < x ≤ 24

The ≤ symbol means less than or equal to

Thus x can equal 24

At the other end 2 < x which means x cannot equal 2

Thus x = 24 will make the inequality true

5 0

2 years ago

Read 2 more answers