3 years ago

What is the volume of this cone

Mathematics

1 answer:

wel3 years ago

6 0

Answer:

6ix9ines a snitch

Step-by-step explanation:

aka rat

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Can anyone help???

svp [43]

Answer:

-8x+21

Step-by-step explanation:

Use the distributive property.

8 0

3 years ago

Simplify this expression. 3x2(7x2 − 9)

kirill115 [55]

<span>3x2(7x2 − 9)
Multiply 3x^2 by 7x^2 and -9(Use distributive property)
Final Answer: D.) 21x^4 - 27x^2</span>

4 0

3 years ago

Lisa's age is 4 yrs. older than three times Sammy's age. Lisa is 28 yrs. old. Let's represent Sammy's age.

masha68 [24]

Answer:

Step-by-step explanation:

So it'd be

28=3s+4

28-4=3s

24=3s

24/3=3s/3

8=2

8 0

3 years ago

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A radioactive substance decays according to the formula

Leviafan [203]

Answer:

$t=4820 y$

Step-by-step explanation:

a) The half-life equation is given by:

$t_{1/2}=\frac{ln(2)}{k}$

b) Using the decay equation we have:

$Q(t)=15e^{-0.0001438t}$

we need to find t when $Q(t)=\frac{Q_{0}}{2}$

$7.5=15e^{-0.0001438t}$

$0.5=e^{-0.0001438t}$

$ln(0.5)=-0.0001438t$

$t=\frac{ln(0.5)}{-0.0001438}$

$t=4820 y$

Therefore, it will take 4820 years to decay to half the original amount.

I hope it helps you!

7 0

3 years ago

What is the difference of 31,678 and 28,995

Tcecarenko [31]

The difference is 2,683
All you do is subtract 28,995 from 31,678 to get the answer

4 0

3 years ago

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