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2 years ago

The radius of a circle is 5 feet. What is the circumference?

Mathematics

1 answer:

givi [52]2 years ago

7 0

The answer is 31.42ft

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Kimberly is 3 times as old as her sister hallery. What is ratio of Kimberly age to hallery?

Sloan [31]

I think the answer would be 3:1

7 0

2 years ago

Read 2 more answers

In a lottery game, a player picks six numbers from 1 to 27. If the player matches all six numbers, they win 40,000 dollars. Othe

Alexus [3.1K]

Answer:

We conclude that expected value of this game is -0.865$.

Step-by-step explanation:

We know that in a lottery game, a player picks six numbers from 1 to 27.

We know that

$C_6^{27}=296010$

As there is only one advantageous combination, we conclude that the number of non-winning combinations is 296009.

He can win 40,000 dollars.

We calculate:

$E(X)=\frac{1}{296010}\cdot 40000\$- \frac{296009}{296010}\cdot 1\$\\\\E(X)=\frac{40000-296009}{296010}\, \$\\\\E(X)=-0.865\, \$$

We conclude that expected value of this game is -0.865$.

7 0

2 years ago

12x-5y=-20 y=x+4 Please help me asap it's due Wednesday :(

Ahat [919]

Answer:

Point Form:

(0,4)

Equation Form:

x=0,y=4

Step-by-step explanation:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

5 0

2 years ago

4.) Order the following decimals from greatest to least. 15.9 9.5 1.95 9.15 1.59

olya-2409 [2.1K]

1.59, 1.95, 9.15, 9.5, 15.9

3 0

3 years ago

Try to prove the hypothesis from part B that the sum of a rational and an irrational number is an irrational number.

Maurinko [17]

The next step of your proof is to subtract (a/b) from both sides.

Then you get, x = (m/n) - (a/b)

Since rationals are closed over addition, (m/n) + (-a/b) is a rational number.

Therefore, x (an irrational number) = a rational number This is a false statement which is a contradiction. So, the assumption was incorrect.

Thus, the sum of a rational and irrational number is an irrational number. QED

8 0

3 years ago