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3 years ago

270 is 75% of what number?

1 answer:

5 0

First, you have to divide 270 by 3, so you get 25%. This comes out to be 90. So, 90 is 25%. Now, multiply this by four to get 100%. This comes out to be 360. So, 270 is 75% of 360, which answers the question '270 is 75% of what number?'

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Jane is playing a game in which he spins a spinner with 6 equal-sized slices numbered 1 through 6. The spinner stops on a number

sleet_krkn [62]

Answer:

The expected value of playing the game is $0.75.

Step-by-step explanation:

The expected value of a random variable is the weighted average of the random variable.

The formula to compute the expected value of a random variable X is:

$E(X)=\sum x\cdot P(X=x)$

The random variable X in this case can be defined as the amount won in playing the game.

The probability distribution of X is as follows:

Number on spinner: 1 2 3 4 5 6

Amount earned (X): $1 $4 $7 $10 -$8.75 -$8.75

Probability: 1/6 1/6 1/6 1/6 1/6 1/6

Compute the expected value of X as follows:

$E(X)=\sum x\cdot P(X=x)$

$=(1\times \frac{1}{6})+(4\times \frac{1}{6})+(7\times \frac{1}{6})+(10\times \frac{1}{6})+(-8.75\times \frac{1}{6})+(-8.75\times \frac{1}{6})$

$=\frac{1}{6}+\frac{4}{6}+\frac{7}{6}+\frac{10}{6}-\frac{8.75}{6}-\frac{8.75}{6}$

$=\frac{1+4+7+10-8.75-8.75}{6}$

$=0.75$

Thus, the expected value of playing the game is $0.75.

5 0

3 years ago

If you answer this question in full truth you get max points able to be given and brainliest I don't have time to play game answ

asambeis [7]

The formula for direct variation is written as Y = KX, where k is the direct variation you need to solve for.

Y is the total amount raised and X would be the number of attendees:

100 = K5

Divide both sides by 5:

K = 100/5

K = 20

B. The constant of variation is K which is 20

C) Using the formula from A: y = kx, replace k with 20 and x with 60 and solve for y:

y = 20 * 60

y = 1200

The total is: $1,200

2. A relationship is proportional when the ratio is a constant number.The relationship is non proportional when the ratio varies between the different values.

8 0

3 years ago

-4k^2-8k-3 = -3-5k^2

mel-nik [20]

$-4k^2-8k-3 = -3-5k^2 \\ \\ -4k^2 - 8k = -5k^2 \\ \\ 4k^2 + 8k - 5k^2 = 0 \\ \\ -k^2 + 8k = 0 \\ \\ 8k - k^2 = 0 \\ \\ k(8 - k) = 0 \\ \\ k = 0,8 \\ \\$

The final result is: k = 0, 8.

8 0

3 years ago

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I need help please and thank you

emmainna [20.7K]

Answer:

Step-by-step explanation:

7 0

3 years ago

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Two numbers are unknown in the expression ⬜️ * {[(12-3)*3]+(◽️ *6)-8} If the value of the expression is 98 what are the unknown

aksik [14]