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denis-greek [22]
3 years ago
9

A bag contains 5 yellow 6 red and 4 green marbles. 2 marbles are drawn the first is replaced before tue 2nd is drawn. A random v

ariable assigns the number of green marbles to each outcome Calculate the expected value of the random variable
Mathematics
1 answer:
levacccp [35]3 years ago
4 0
The correct answer is 53
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What is the measure of? angle PQR<br> [Not drawn to scale)<br> -51<br> -55<br> -74<br> -78
soldi70 [24.7K]

<u>Given</u>:

The exterior angle P is 74°

The measure of ∠PRQ is 51°

We need to determine the measure of ∠PQR

<u>Measure of ∠QPR:</u>

From the figure, it is obvious that P is the intersection of the two lines.

The angle 74° and ∠QPR are vertically opposite angles.

Since, vertically opposite angles are always equal, then the measure of ∠QPR is 74°

Thus, the measure of ∠QPR is 74°

<u>Measure of ∠PQR:</u>

The measure of ∠PQR can be determined using the triangle sum property.

Thus, we have;

\angle PQR+\angle QPR+\angle PRQ=180^{\circ}

Substituting the values, we get;

\angle PQR+74^{\circ}+51^{\circ}=180^{\circ}

       \angle PQR+125^{\circ}=180^{\circ}

                  \angle PQR=55^{\circ}

Thus, the measure of ∠PQR is 55°

Hence, Option B is the correct answer.

4 0
2 years ago
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What is another way to write the equation 3(1.25)+3(2.00)=9.75
Alexus [3.1K]

Answer:

3.75+6=9.75

Step-by-step explanation:

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2 years ago
A student ran out of time on a multiple choice exam and randomly guessed the answers for 2 problems. Each problem had 5 answer c
frozen [14]
So if there are 5 choices and only one is correct, there is a 1/5 chance of being correct. since there was 2 questions, you need to multiply 1/5 by 1/5 to get 2/25 of getting both questions correct.

i hope this helps!!
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What value of x makes this equation true?<br> 5-2(x + 8) = 6x + 7
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Answer:

x = negative 9/4

Step-by-step explanation:

-2x-11=6x+7

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I just ask this question on the SnapCalc app the answer is in the image

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