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3 years ago

15

A sphere has a radius r=12 inches. What is it’s approximate volume

1 answer:

alexandr402 [8]3 years ago

7 0

Answer: 7238.28

Step-by-step explanation:

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How to factor 2n^2+3n-9 without splitting the middle term

kozerog [31]

$2n^2+3n-9= \\\\ a=2 \\ b=3 \\ c=-9 \\\\ \Delta= 3^2-4*2*(-9)=9+72\to\boxed{81} \\\\ x_1;x_2=\frac{-3 +\-\sqrt{81}}{2*2}= \frac{-3+/- 9}{4} \\\\ x_1=\frac{-3+9}{4}=\frac{6}{4}\to\boxed{\frac{3}{2}} \\\\ x_2=\frac{-3-9}{4}=\frac{-12}{4}\to\boxed{-4} \\\\ 2n^2+3n-9=(x-\frac{3}{2})(\x+4)$

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3 years ago

How do you show work for 8 divided by 412

IrinaK [193]

So, the equation would be 8/412. I wish I would show you the work, but I don't know how to. The answer is 0.019.

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3 years ago

Read 2 more answers

In a certain deck of cards, each card has a positive integer written on it. In a multiplication game, a child draws a card and m

ASHA 777 [7]

Answer:

4 and 13

Step-by-step explanation:

You want integer solutions to ...

15 ≤ n(n+1) ≤ 200

If we let the limits be represented by "a", then the equality is represented by ...

n² +n -a = 0

(n² +n +1/4) -a -1/4 = 0

(n +1/2)^2 = (a +1/4)

n = -1/2 + √(a +1/4)

For a=15, we have

n ≥ -1/2 + √15.25 ≈ 3.4 . . . . . minimum n is 4

For a=200, we have

n ≤ -1/2 + √200.25 ≈ 13.7 . . . maximum n is 13

The least and greatest integers on the cards are 4 and 13.

8 0

3 years ago

If P is between L and A, PL = 6x + 24, PA = 12x - 6 and LA = 30x - 18, then x = ______ and LA = ___&&

levacccp [35]

To solve this problem, we have to use the definition of segment addition.

$LA=PL+PA$

Then, we replace the given expressions

$30x-18=6x+24+12x-6$

Now, we solve for <em>x</em>.

$\begin{gathered} 30x-6x-12x=24-6+18 \\ 12x=36 \\ x=\frac{36}{12} \\ x=3 \end{gathered}$ <h2>Hence, x = 3.</h2>

Let's find LA:

$30x-18=30\cdot3-18=90-18=72$ <h2>Hence, LA measures 72 units.</h2>

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1 year ago

A cone with a diameter

kkurt [141]

Answer:

I think it 3.15 if it wrong I'm not even here

3 0

3 years ago