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3 years ago

I just need the coordinates

Mathematics

1 answer:

Viefleur [7K]3 years ago

4 0

There are no coordinates for an equation like this, you have to just graph the problem. Just try graphing something similar to this (or just include this image). Hope this helps!

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A student wanted to construct a 95% confidence interval for the mean age of students in her statistics class. She randomly selec

Alex_Xolod [135]

Answer:

95% confidence interval for the population mean is 20.255 and 17.945

Step-by-step explanation:

given data

mean = 19.1

standard deviation = 1.5

n = 9

to find out

95% confidence interval for the population mean

solution

we know 95% confidence interval formula i.e.

mean +/- t * standard deviation/ $\sqrt{n}$ .............1

here t for 9 students 2.31 ( from t table)

so put all value n t standard deviation and mean in equation 1

= mean +/- t * standard deviation/ $\sqrt{n}$

= 19.1 +/- 2.31 * 1.5/ $\sqrt{9}$

= 20.255 and 17.945

95% confidence interval for the population mean is 20.255 and 17.945

7 0

3 years ago

A) 7.746<br> B) 37.947<br> C) 30.984<br> D) 33.941

ratelena [41]

9514 1404 393

Answer:

B) 37.947

Step-by-step explanation:

Using the given formula, we find ...

s = (12 +11 +7)/2 = 15

A = √(15(15 -12)(15 -11)(15 -7)) = √1440 = 12√10 ≈ 37.947 . . . square yards

6 0

3 years ago

Write the equation of a circle with center M(2,6) and a radius of 4

ycow [4]

Answer:

(x -2)^2 + (y-6)^2 = 16

Step-by-step explanation:

The equation of a circle is of the form

(x-h)^2 + (y-k)^2 = r^2

where (h,k) is the center and r is the radius

(x- 2)^2 + (y-6)^2 = 4^2

(x -2)^2 + (y-6)^2 = 16

7 0

3 years ago

In the figure below, angle y and angle x form vertical angles. Angle y forms a straight line with the 60° angle and the 70° angl

Lynna [10]

The answer is 50 I believe

4 0

3 years ago

Find the sum of the measures of the interior angles of each polygon. 13 gon

Pavlova-9 [17]

For the general case, the n-gon, you got $180(n-2)$ degrees. The 13-gon thus has 1980 degrees in total.

5 0

4 years ago

Read 2 more answers