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2 years ago

In simple regression analysis, the standard error is ________ greater than the standard deviation of y values.

Mathematics

1 answer:

guapka [62]2 years ago

6 0

In simple regression analysis, the standard error is never greater than the standard deviation of y values.

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The measure of arc QS is (4x – 18)°.

Zigmanuir [339]

Answer: 49.5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

the circle below has center T. suppose that m UV = 138 degrees and that UW is tangent to the circle at U. find the following

alisha [4.7K]

Angle UTV is basically given: it's 138°.

Moreover, since UTV is isosceles, the other two angles have the same measure x. We thus have

$138+x+x=180 \iff 2x=42 \iff x=21$

So, TUV is 21°, and VUW is complementary, so it must be 69° so that they sum up to 90°

3 0

4 years ago

The two points (2,4) and (9,4) are the endpoints of the diameter of a circle. What is the equation of this circle in standard fo

denis23 [38]

The midpoint of the diameter endpoints is the center of the circle...

((2+9)/2, (4+4)/2)

(5.5, 4) is the center of the circle...

The distance between the two endpoints is the diameter of the circle...

d^2=(4-4)^2+(9-2)^2

d^2=0+49

d^2=49

d=7

So the radius is d/2 which is 3.5

Now the equation of a circle is:

(x-h)^2+(y-k)^2=r^2 where (h,k) is the coordinates of the center and r is the radius.

Earlier we found (h,k) to be (5.5, 4) and r=3.5 so our equation is:

(x-5.5)^2+(y-4)^2=3.5^2

(x-5.5)^2+(y-4)^2=12.25

4 0

3 years ago

If (x,y) is a solution to the system of equations shown below, what is the product of the y-coordinates of the solutions? x^2+4y

aliina [53]

Answer:

The product of the y-coordinates of the solutions is equal to 3

Step-by-step explanation:

we have

$x^{2}+4y^{2}=40$ -----> equation A

$x+2y=8$ ------> equation B

Solve by graphing

Remember that the solutions of the system of equations are the intersection point both graphs

using a graphing tool

The solutions are the points (2,3) and (6,1)

see the attached figure

The y-coordinates of the solutions are 3 and 1

therefore

The product of the y-coordinates of the solutions is equal to

(3)(1)=3

4 0

3 years ago

Find the area of the shaded region. All angles are right angles.

Tanzania [10]

Answer: 147

Step-by-step explanation:

First, 9 x 4 = 36

Again, 9 x 4 = 36

Finally 15 x 5 = 75

So, 36 + 36 + 75 = 147

8 0

4 years ago