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2 years ago

Someone please help!

Mathematics

1 answer:

zzz [600]2 years ago

4 0

Answer:

x=12

Step-by-step explanation:

8x6=48 =x

6x6=36

equation= 6x*6-48=x

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Intersecting lines are _____ coplanar. Sometimes Never Always

olga55 [171]

Answer:

Always

Step-by-step explanation:

Coplanar lines are lines that intersect making intersecting lines always coplanar.

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2 years ago

The travelers are adding a new room to their house. the room will be a cube with volume 3375 ft.³.they are going to put in hardw

Talja [164]

Answer:

$ 2250

Step-by-step explanation:

3375 = s³

s = ∛3375

s = 15 ft.

floor area = s² = (15 * 15)

floor area = 225 ft²

the contractor charges $10 per ft².

therefore,

the hardwood cost = 225 x $10 = $2250

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2 years ago

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Is 976 -522 more or less than 400? Explain how you can tell without actually subtracting.

liq [111]

You can round 976 to 1000 and 522 to 500. So it would be
1000 - 500 = 500. The answer you would get after subtracting 976-522 would be more than 400 if you round it.

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2 years ago

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In a lottery game, a player picks six numbers from 1 to 21. If the player matches all six numbers, they win 40,000 dollars. Othe

Darina [25.2K]

Answer:

The expected value of this game is -$0.26.

Step-by-step explanation:

Expected value:

Each possible earning/loss multiplied by it's probability.

Probability:

Number of desired outcomes divided by the number of total outcomes.

In this question, the order in which the numbers are chosen is not important. So we use the combinations formula to solve.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Probability of winning:

Desired outcomes:

The 6 correct numbers, so $D = 6$

Total outcomes:

6 numbers from a set of 21. So

$T = C_{21,6} = \frac{21!}{6!15!} = 54264$

Probability:

$p = \frac{1}{54265}$

Expected value

$\frac{1}{54265}$ probability of earning 40,000.

$\frac{54264}{54265}$ probability of losing 1. So

$E = \frac{40,000}{54265} - \frac{54264}{54265} = -0.26$

The expected value of this game is -$0.26.

7 0

2 years ago

Identify the equation that represents this solution & the correct solution.

Hitman42 [59]

The answer is A. d-17= 22; d=39

6 0

3 years ago