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3 years ago

Anyone know the answer and how to do it???

Mathematics

1 answer:

Mekhanik [1.2K]3 years ago

3 0

I did it on computer so I can’t really give you steps but the answer is 3.8, but what I did is find the missing angle BAC then constructed the triangle

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1. Line m does not intersect RS.

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Answer:

I NEED MORE OF AN EXPLANATION

Step-by-step explanation:

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4 years ago

Which function has zeros at x= 10 and x= 2?

kari74 [83]

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3 years ago

Read 2 more answers

Consider the relationship between the number of bids an item on eBay received and the item's selling price. The following is a s

n200080 [17]

Answer:

Let's assume the following data:

Price in Dollars (X) 26 29 32 38 47

Number of Bids (Y) 12 13 15 16 18

For our case we have this:

n=10 $\sum x = 172, \sum y = 74, \sum xy = 2623, \sum x^2 =6194, \sum y^2 =1118$

$r=\frac{5(2623)-(172)(74)}{\sqrt{[5(6194) -(172)^2][5(1118) -(74)^2]}}=0.974$

So then the correlation coefficient would be r =0.974

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

Solution to the problem

And in order to calculate the correlation coefficient we can use this formula:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

Let's assume the following data

Price in Dollars (X) 26 29 32 38 47

Number of Bids (Y) 12 13 15 16 18

For our case we have this:

n=10 $\sum x = 172, \sum y = 74, \sum xy = 2623, \sum x^2 =6194, \sum y^2 =1118$

$r=\frac{5(2623)-(172)(74)}{\sqrt{[5(6194) -(172)^2][5(1118) -(74)^2]}}=0.974$

So then the correlation coefficient would be r =0.974

5 0

3 years ago

Find the coordinates of the midpoint of with endpoints G(-9, 4) and H(5, 10).

Art [367]

$(\frac{x_{2} + x_{1}}{2}, \frac{y_{2} + y_{1}}{2}) \\(\frac{-9 + 5}{2}, \frac{4 + 10}{2}) \\(\frac{-4}{2}, \frac{14}{2}) \\(-2, 7)$

5 0

3 years ago

Mason inspects 73.5 phones each day. He must inspect no fewer than 1,470 phones each month. How many days will Mason need to wor

algol13

Answer:

20 days

Step-by-step explanation:

We have 31 days in one month

Mason must have inspected 1470 after 31 days

He inspects 73.5 phones per day. Hence,

73.5 phones =>1 days

1470 phones =>

1470 ÷ 73.5 => 20 days

Hence, Mason will need 20 days to reach his goal.

8 0

3 years ago