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3 years ago

Need help on both these questions please thank you

Mathematics

1 answer:

Elena L [17]3 years ago

8 0

Remember that the volume of a cone is $1/3 \pi r^2h$
Thus;

1. 2^2 = 4
4pi(7) = 28pi
28/3 = $9 \frac{1}{3}$
ANS = $9 \frac{1}{3} \pi$ or ~29.32

2. d = 18, r = 9
9 ^ 2 = 81
81pi (18) = 1458pi
1458 / 3 = 486
ANS = $486 \pi$ or ~1526.81

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valkas [14]

Answer:

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3 years ago

Please help me :)) algebra 2! what are the real roots?

irina1246 [14]

Answer:

Step-by-step explanation:

So we have the equation:

$3(x-4)^\frac{4}{3}+16=64$

First, let's subtract 16 from both sides:

$3(x-4)^\frac{4}{3}=48$

Now, let's divide both sides by 3:

$(x-4)^\frac{4}{3}=16$

Remember that with fractional exponents, we can move the denominator into the root position. Therefore:

$(\sqrt[3]{x-4})^4=16$

Let's take the fourth root of both sides. Since we're taking an even root, make sure to have the plus-minus symbol!

$\sqrt[3]{x-4} =\pm 2$

Cube both sides. Since we're cubing, the plus-minus stays.

$x-4=\pm 8$

Add 4 to both sides.

$x=\pm 8+4$

Calculator:

$x=8+4\text{ or } x=-8+4\\x=12\text{ or } x=-4$

So, our answer is A.

And we're done!

7 0

4 years ago

Someone do this and show the work !!! Please help :)

Romashka [77]

Answer:

Step-by-step explanation:

54 has 4 ones

and 5 tens

37 has 7 ones

and 3 tens

subtracting ones

7 ones are taken from 54

so along with the existing 4, 1 ten is decreased and another 3 ones are decreased resulting in 7 ones now

now 54 has 5-1= 4 tens

subtracting tens we get 4-3=1

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4 years ago

Your turn: Use the triangle given. What is the value of sin Θ?

LekaFEV [45]

You can eliminate D right away. The sine is NEVER greater than one. That's because the denominator of the fraction is always the hypotenuse.

The definition of the sine is
Sin(x) = Opposite / hypotenuse.
Sin(x) = 10/26 = 5/13 The fraction reduces.

The answer is B
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3 years ago

What is 65/8 as a mixed number

Stolb23 [73]

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3 years ago

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