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____ [38]
3 years ago
13

a musician believes that listening to classical music affects mood determine if two-tailed or one-tailed​

Mathematics
1 answer:
kramer3 years ago
8 0

Answer:

I think one tailed correct me if im wrong

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Caroline has a mask collection of 380 masks. She keeps 45% of the masks on her wall. How many masks does she keep on her wall?
LekaFEV [45]

Answer:

171

Step-by-step explanation:

multiply 380 times 0.45 so like this:

380 x 0.45 = 171

3 0
3 years ago
What is the solution to the inequality below?
Svetlanka [38]

Answer:

B. x < -8 or x > 8

Step-by-step explanation:

You can use process of elimination to solve this problem by going through every solution and testing them out, but let's jump right to B.

Process:

You know that since the inequality states that x^2 has to be greater than 64, x  has to be more than 8, or less than -8.

This is because 8^2 = 64, and -8^2 = 64, and the inequality requires the answer to be more than 64.

Looking at B., you can see that if x is < -8, the square of, for example, -9, would be 81. This is greater than 64, so this works!

Now, B. also has an alternative. The 'or' is a major clue to which is the correct answer, since the square root of any number can be positive or negative. (-8^2 = 8^2)

The 'or' states that x must be greater than 8. So, for example, if we take the square of 10, we get 100, and that is also greater than 64.

We've proven that this solution is accurate for both parts, so it is definitely the one we want!

Hope this helps!

4 0
3 years ago
If A and B are independent events, which equation must be true?
matrenka [14]
B. Pb/a = pb) is the answer
8 0
3 years ago
PLS HELP ASAP calculate the distance between the two points. (18, -24) &amp; (87, 100)
GarryVolchara [31]

Answer:

<h3>The answer is 141.90 units</h3>

Step-by-step explanation:

The distance between two points can be found by using the formula

d =  \sqrt{ ({x1 - x2})^{2} +  ({y1 - y2})^{2}  } \\

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

(18, -24) & (87, 100)

The distance between them is

d =  \sqrt{ ({18 - 87})^{2} +  ({ - 24 - 100})^{2}  }  \\  =  \sqrt{ ( { - 69})^{2}  + ( { - 124})^{2} }  \\  =  \sqrt{4761 + 15376}  \\  = \sqrt{20137}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   \\  = 141.90489773...

We have the final answer as

<h3>141.90 units</h3>

Hope this helps you

5 0
3 years ago
A zoo train ride costs $6 per adult and $1 per child. On a certain day, the total number of adults (a) and children (c) who took
Jobisdone [24]
I believe the answer C is correct
3 0
4 years ago
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