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2 years ago

Geometry math question

Mathematics

2 answers:

avanturin [10]2 years ago

8 0

A full rotation is 360 degrees, divide 360 by the rotation given in the problem:

360 / 120 = 3

A triangle has 3 inside angles, so the answer would be an equilateral triangle.

erik [133]2 years ago

8 0

A full rotation is 360 degrees, divide 360 by the rotation given in the problem:

360 / 120 = 3

A triangle has 3 inside angles, so the answer would be an equilateral triangle.

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3. From the table below, find Prof. Xin expected value of lateness. (5 points) Lateness P(Lateness) On Time 4/5 1 Hour Late 1/10

wariber [46]

Answer:

The expected value of lateness $\frac{7}{20}$ hours.

Step-by-step explanation:

The probability distribution of lateness is as follows:

Lateness P (Lateness)

On Time 4/5

1 Hour Late 1/10

2 Hours Late 1/20

3 Hours Late 1/20

The formula of expected value of a random variable is:

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

Compute the expected value of lateness as follows:

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

$=(0\times \frac{4}{5})+(1\times \frac{1}{10})+(2\times \frac{1}{20})+(3\times \frac{1}{20})\\\\=0+\frac{1}{10}+\frac{1}{10}+\frac{3}{20}\\\\=\frac{2+2+3}{20}\\\\=\frac{7}{20}$

Thus, the expected value of lateness $\frac{7}{20}$ hours.

8 0

2 years ago

Solve for T. B=RT-4/6

lions [1.4K]

I’m not sure which of these you meant to type so I answered both ways
B=(RT-4)/6 multiply by 6
6B= RT-4. Add 4
6B+4= RT. Divide by R
(6B+4)/R = T

Or B=RT -4/6. Multiply by 6
6B=6RT -4. Add 4
6B+4= 6RT. Divide by 6R
(6B-4)/6R = T. Reduce
(3B-2)/3R = T

8 0

3 years ago

What is a division sign beside ‘/‘?

Andrew [12]

Answer:

Division can be represented with ÷ as well.

8 0

2 years ago

Ryan’s tax for 2014 was $2,590. He paid a total of $4,508 in withholding taxes. Will Ryan owe money or get a refund and how much

luda_lava [24]

Answer:

$ 7,098

Step-by-step explanation:

$2,590

$4,508

$7,098

4 0

2 years ago

PLEASE I need help I don’t understand this math and I have less then 20 minutes so help is really needed please also if you can

adoni [48]

Answer:

false

Step-by-step explanation:

because 14x7 = 98

4 0

2 years ago

Read 2 more answers