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IRINA_888 [86]
3 years ago
14

Mountain View Middle School students work on square desktops. The area of the square desk surface is 4 square feet. What is the

length of each side of the desktop?
Mathematics
1 answer:
ahrayia [7]3 years ago
8 0

Answer:

2 Feet

Step-by-step explanation:

The area is found by multiplying length by width. Since its a square the length and width are the same and it would have to be 2.

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In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student
Nikitich [7]

Answer:

<h2>13/21</h2>

Step-by-step explanation:

Givens:

  • There are 21 students in total.
  • 8 students take Art,
  • 7 students take Music.
  • 2 students take both.

So, in the problem, we have two sets labeled as Art and Music, and an intersection between these two sets.

To answer the question we have to consider that it's asking about a probability of one or another, when that happens, we actually need to find the probability of the union of both sets, which is defined as:

P(AorB)=P(A)+P(B)-P(A andB)

This means that the probability of students that takes either Art or Music, refers only to those that only are in those courses, not in the intersection, that's why it has to be subtracted:

P(AorB)=\frac{8}{21}+\frac{7}{21}-\frac{2}{21}=\frac{13}{21}

Therefore, the right answer is 13\21.

Remember that the probability including "or", refer to the probability of the union of sets, from which must be subtract the intersection.

7 0
3 years ago
Read 2 more answers
If f(x) = 1 – x, which value is equivalent to |f(i)|?<br><br> a. 0<br> b. 1<br> c. √2<br> d. √-1
NikAS [45]
If you would like to know which value is equivalent to <span>|f(i)|, you can calculate this using the following steps:

f(x) = 1 - x
</span>|f(i)| = |1 - i| = sqrt((1-i) * (1-i)^conjugate) = sqrt(2) = <span>√2

The correct result would be </span><span>c. √2.</span>
7 0
3 years ago
Read 2 more answers
You own a share of a stock worth $400 . It decreases 5% .how much is it worth now?
Alchen [17]

Answer:

380$

Step-by-step explanation:

Multiply 400*5%=20

Then subtract 400-20=380

3 0
3 years ago
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PLEASE HELP!!!! I WILL MARK BRAINLIEST!!!!!!!! The question is in the picture!
Inessa [10]

The highest peak is in the middle and both sides of it are fairly similar, so this would be a bell shaped distribution.

8 0
3 years ago
Here is the real two
Talja [164]
A is the answer for the first and the second one is 1/3.HERE ARE URE ANSWERS
5 0
3 years ago
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