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tiny-mole [99]
3 years ago
12

HELP QUICK PLZ I AM STUCK!!!!!!!

Mathematics
1 answer:
Rasek [7]3 years ago
3 0

Answer:

B.  

Step-by-step explanation:

First move the x with negative exponent to the bottom, leaving the x term on the bottom which cancels out collectively the x terms in the numerator.  Then just multiply it out

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According to a college survey, 22% of all students work full time. Find the standard deviation for the random variable X, the nu
mixer [17]

Answer:

1.66

Step-by-step explanation:

Calculation to find the standard deviation for the random variable X of the number of students who work full time in samples of size

Using this formula

Standard deviation(X)=√np(1−p)

Where,

n represent the number of students=16

p represent the percentage of all students who work full time=22

Let plug in the formula

Standard deviation(X)=√16(0.22)(1−0.22)

Standard deviation(X)=√(3.52)(0.78)

Standard deviation(X)=√2.7456

Standard deviation(X)=1.656

Standard deviation(X)=1.66 (Approximately)

Therefore the standard deviation for the number of students who work full time in samples of size 16 will be 1.66

8 0
3 years ago
Eric made a scale drawing of the middle school. The scale he used was 1inch=5feet. If the gym is 30 inches by 20 inches in the d
BabaBlast [244]

Answer: 150 feet : 100 feet

Step-by-step explanation:

From the question, we are informed that the scale used by Eric was 1inch=5feet.

If the gym is 30 inches by 20 inches in the drawing, the acual length and width of the gym would be:

Length = 30 inches = 30 × 5 feet = 150 feet

Width = 20 inches = 20 × 5 feet = 100 feet

Therefore, the acual length and width of the gym would be 150 feet by 100 feet

6 0
2 years ago
Read 2 more answers
2(-6+2)/4<br><br> I’m really confused.
Luba_88 [7]

Answer: -2

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A rectangular prism that has a length of 8 feet, width of 6 feet, and height of 12 feet. What is the volume of the prism?
makvit [3.9K]

Answer:

The answer/volume is 576

Explanation:

I used a calculator for the volume online

3 0
3 years ago
Read 2 more answers
ILL GIVE BRAINLIEST PLS HELP
yan [13]

Answer:

1/5

Step-by-step explanation:

The stick has a length of 5 units

The stick is broken at two points chosen at random

First break: the probability that you get a piece that is 1 unit or longer than 1 units= 1/5.

Second break, the probability that you get a piece that is 1 unit or longer than 1 units is 1/5.

Therefore,

The total probability =probability of first break * probability of second break * original stick unit

=1/5 * 1/5 * 5

= 1/25 *5

=5/25

=1/5

4 0
3 years ago
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