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3 years ago

Plz anwser this anwser

Mathematics

2 answers:

Ahat [919]3 years ago

4 0

Best estimate : 30 * 60 = 1800

Mazyrski [523]3 years ago

3 0

I would first estimate it and then figure out the answer by doing 34,and times that by 57and compare them together to see what you got

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Just all of question b

Anni [7]

Good evening ,

_______

Answer:

_____________________

Step-by-step explanation:

i) (50-0)÷(10-9)

=50

ii) (150-75)÷(12-11)

=75

iii) (150-0)÷(12-9)

=50.

_____________________

5 0

3 years ago

PLS HELP Solve for x <br><br>Enter your answer in the box.

Gemiola [76]

Answer:

Step-by-step explanation:

If two secants are drawn from a point outside a circle, then product of one secant segment and its external part equal the product of the other secant segment and its external part.

(Secant-Secant Power Theorem)

(JG)(JH) = (JM)(JK)

(16) X (7) = (8+X)(8)

112=64+8X

8X=48

X=6

5 0

2 years ago

how do i subtract a decimal from a fraction? this is real hard i dont even know if its a reall thing!

erma4kov [3.2K]

hey, you need to simplify the fraction into a decimal or the decimal into a fraction.

6 0

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

I need the answer to the question on the image

bekas [8.4K]

Answer:

x should equal 10 because 10 divide by -5 would equal -2

4 0

2 years ago