What is the value of χ2 for the two-way table?
A B C D
X 5 10 15 20
Y 7 13 17 21
(2 points)
0.5320
0.0801
1.08
0.2830
0.9632

Answer:

18.36 to nearest hundredth.

Step-by-step explanation:

base of the triangle = 1/3 * 32 = 16.

x^2 = 9^2 + 16^2

x^2 = 81 + 256 =  337

x = √337 = 18.36.

The solution of f(x)=g(x) to the nearest hundredth if f(x)= x^2-2 g(x) = x-1 is 1.62 or -0.62

Given the following function below:

f(x) = x^2 - 2
g(x) = x - 1

Since f(x) = g(x), hence;

x^2 - 2 = x - 1
x^2 - x - 1 = 0

Factorize to have:

x = 1/2 +√5/2  or x= 1/2 - √5/2

x = 1.62 or -0.62

Hence the solution of f(x)=g(x) to the nearest hundredth if f(x)= x^2-2 g(x) = x-1 is 1.62 or -0.62

Learn more on solution to functions here: https://brainly.com/question/10439235

Answer:

12 inches squared :)

Step-by-step explanation:

Area of triangle: hxb/2

Now lets solve!!

4(6)/2

24/2

12

Have an amazing day!!

Please rate and mark brainliest!!

Answer:

the answer to that question is C

Answer:

C

Step-by-step explanation:

this is not my best area so I may be off but C seems to be the best answer. I got 7 for my mean, 6.5 for my median, and 5.5, 6.5 and 8 as my modes. I'm not sure how to explain my reasoning for getting C though.

Answer:

zero or may be infinite bro

Answer:

  (d)  parabola

Step-by-step explanation:

The attached diagram shows some of the curves that result from a plane intersecting one nap of a double-napped cone.

__

When the plane is parallel to the generator, a parabola is the curve of intersection. When the plane intersects both naps of the cone, the resulting set of curves is a hyperbola (not shown here).

Answer:

C

Step-by-step explanation:

C because 475 is equal to an x value of the year axis of the plate in hours

273.6

[tex]0.76\times 360[/tex]

______________________________________

[tex]0.76\times 360[/tex]

______________________________________

[tex]273.6[/tex]

I hope this helps you

:)

[tex]x = - 50[/tex]

-38×+43=-40×-57

-38×+43+40=-57

-38×+40×=-57-43

2×=-57+43

2×=-100

×=-50

I do not know if it's right

Given equation,

[tex] \\ \dashrightarrow \sf \qquad-38x+43=-40x-57 \\ \\ [/tex]

Adding 40x to both sides :

[tex] \\ { \dashrightarrow \sf \qquad-38x+43 + 40x=-40x-57 + 40x} \\ \\ [/tex]

[tex] { \dashrightarrow \sf \qquad2x+43=-57} \\ \\ [/tex]

Adding (-43) to both sides we get :

[tex] \\ { \dashrightarrow \sf \qquad2x+43 + ( - 43)=-57 + (- 43)} \\ \\ [/tex]

[tex] { \dashrightarrow \sf \qquad2x= - 100} \\ \\ [/tex]

Dividing 2 from both sides :

[tex] \\ { \dashrightarrow \sf \qquad \frac{2x}{2} = - \frac{100}{2} } \\ \\ [/tex]

[tex] { \dashrightarrow \tt \qquad \: x=-50} \\ \\ [/tex]

Answer:

Katie had the highest mean score.

Step-by-step explanation:

Katie had the highest mean score because her mean score was 81.4, and Annie's highest mean score was 72.4.

Answer: Katie

Step-by-step explanation: In six of out 7 times Katie had higher marks.

Annie mean is 72.42

Katie's mean is 81.42

The profit he made from selling his hearing aids at a profit of 17% is $234.26.

To calculate the profit obtained, we must calculate how much money is equal to 17% of $1,378.

Based on the above, 17% of $1,378 equals $234.26. On the other hand, to calculate the final sale price of the earphone, we add the initial value plus the value of the profit.

$1,378 + $234.26 = $1,612.26

Learn more about profit in: https://brainly.com/question/15293328

Answer:

the measures of an angle would be 49.2 degrees

Step-by-step explanation:

hope this helps

so so so sorry if this answer is wrong

pls mark brainliest

Answer:

-10*F at 7pm

Step-by-step explanation:

Answer:

Construct the line through points A and B and a second line through points C and D.

Step-by-step explanation:

This is straight from the test. :)

Answer:

c just took test

Step-by-step explanation:

Answer:

1. Given the slope is 2, the equation now looks like y = 2x +b Given P (−1,4) we can solve for the b variable by substituting the x and y cordinates. 4 = 2 ⋅ (− 1) + b 4 = − 2 + b b = 6 Therefore the equation that has the slope of 2 and passes through the point (− 1,4) is y = 2x + 9 so it is d

2. i you can do that.

3. The equation for the slope of a line and the points also called point slope form of equation of a straight line is given by: y − y1 = m (x − x1) Whereas the slope-intercept form the equation of the line is given by: y = mx + b. Where b is the y-intercept.

4.In the formula,y = the y-coordinate of any point on the line,m = slope,x = the x-coordinate of any point on the line,and b = ...

Plug the slope and y-intercept into the formula. Remember,the slope is equal to the rise over the run.

You need to know these

Answer: He needs to save $510

Step-by-step explanation: money owed 145+225 +90= 460

Has 550 in the bank, deduct money owed 550-460 =$90

He needs a bike of $600 and has only $90

Considering the vertex, the quadratic equation that models the path of the golf ball is given by:

y = -0.0011875(x - 400)² + 190

The equation of a quadratic function, of vertex (h,k), is given by:

y = a(x - h)² + k

In which a is the leading coefficient.

In this problem, the vertex is at the maximum height of the parabola, given by (400, 190), hence h = 400, k = 190, and:

y = a(x - 400)² + 190

It starts at the origin, that is, when x = 0, y = 0, hence:

0 = 400²a + 190

a = -190/400²

a = -0.0011875.

Hence, the equation is:

y = -0.0011875(x - 400)² + 190

More can be learned about quadratic equations at https://brainly.com/question/24737967

Answer:

C. 81 because 9 going to make 81 an perfect square.

Answer:

The answer to the question in the first picture is the first one, "The thirty students studies for the test; only eight students got As."

I had a difficult time deciding whether the answer to the question in the second picture is the fourth one, "Her philosophy is that respect should not be given; it should be earned." or the first one, "Her philosophy is that respect should not be given, it should be earned." but I'm pretty sure that it is the fourth one. (I'm so sorry if it's wrong!)

The answer to the question in the third picture is the third one, "The new school will have many features: a huge gym, several science labs, and am extensive library."

Step-by-step explanation:

I hope this helps! Have a lovely day!! :)

(also, I'm really sorry if the answer for the second question is wrong)

Answer:

105 degrees

Step-by-step explanation:

The sum of any quadrilateral is 360 degrees. So, in order to find x, you have to subtract all the given sides from 360.

360-100-95-60=105

Hope this helps! Pls give brainliest!

The numbers given below that fall within the mean absolute deviation of the data are: C. 12,990, D. 12,705, E. 12720.

The mean absolute deviation is simply the average of the distance of each of the data points there are in a data distribution.

The difference of each data point from the mean is most likely within the same range with the mean absolute vallue.

If we subtract 12,990, 12,705, and 12720 from the mean of the data, 12,367, we would get a figure close to the mean absolute deviation, 350.

So the numbers that are within the mean absolute deviation are, C. 12,990, D. 12,705, E. 12720.

Learn more about mean absolute deviation on:

https://brainly.com/question/17381861

Answer:

a=pir^2

you times pi with the radius squared and that is your area

The pairs of shoes increases as the time the cobbler works increases

The equation of the pairs of shoes is y = kx

The variation is a direct variation.

So, we  have:

y = kx

Where:

The cobbler can make 3 pairs of shoes in two hours,

So, we have:

k = 3/2

k = 1.5

Substitute k = 1.5 in y = kx

y = 1.5x

Hence, the equation of the scenario is y = kx

Read more about variation at:

https://brainly.com/question/26319473

Answer:

3

Step-by-step explanation:

Sorry for the late answers, but the answers are...

6

3.40

1.61

I know this because I had this problem and I got it correct. The screenshot attached is proof that the answers are correct

Answer:

There are 6 observed toll fee values.

It costs 3.40 to travel 76 miles.

The predicted value for traveling 30 miles is 1.61

Step-by-step explanation:

Answer:

Let x = the price of movies and let y = the price of video games

8x + 3y = 43

2x + 5y = 32

Use the Elimination Method by multiplying both sides of the second equation by 4

8x + 3y = 43

-(8x + 20y = 128)

-17y = -85

y = 5

2x + 5(5) = 32

2x + 25 = 32

2x = 7

x = 7/2 = 3.5

Movies cost $3.50 and video games cost $5

Step-by-step explanation:

pls mark me brainlest

Answer:

Step-by-step explanation:the second one

Answer:

x = 23 y =67

Step-by-step explanation:

Since a rectangle is made up of 4 right angles you can solve y with the following equation:[tex]23 + y =90[/tex]

Then to solve for x, since x, y and the right angle makes up a triangle and a triangle has 180 degrees. You can use the following equation to solve for x:

[tex]x + 67 + 90 = 180[/tex]