A music store buys instruments and then sells them for 30% more than they paid.

Mathematics

1 answer:

IgorC [24]3 years ago

5 0

Bye doing the pemdas equation the at 3x + -5 you get the answer

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How many different ways are there to rearrange the letters of the word EXAM, if you don't care if the results is a recognizable

Vlada [557]

In this case, all letters are unique.

Start by holding the first letter:
E - XAM
E - XMA
E - MAX
E - MXA
E - AXM
E - AMX
So there are 6 combinations here.

Repeat for all 4 letters.

6 x 4 = 24

This is same as 4x3x2x1.

For 3 unique characters, it is 3x2x1.
For 5 unique characters, it is 5x4x3x2x1
And so on...

6 0

3 years ago

A collection of paired data consists of the number of years that students have studied Spanish and their scores on a Spanish lan

babunello [35]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The percentage is 83%

Step-by-step explanation:

Generally R-Sq is known as the coefficient of determination and from the question the value is 83% and this R-Sq defines the total variation in test scores can be explained by the linear relationship between years of study and test scores

So 83 % of the total variation in test scores is unexplained by the linear relationship between years of study and test scores