Mathematics Middle School

can you help me plssssss

Answers

Answer 1

Answer:

75=115

55=95

85=125

65=105

Step-by-step explanation:

All supplementary angles are added by 40 degrees.

Answer 2

1)105
2)125
3)95
4)115

Related Questions

If the outlier is excluded from the following data set, what happens to the mean?
22, 20, 23, 2, 21, 25, 31, 28
A. It does not change.
B. There is no outlier in this data set.
C. It decreases.
D. It increases.

Answers

Answer: D) it increases

=========================================================

Explanation:

Let's add up the values we're given to get

22 + 20 + 23 + 2 + 21 + 25 + 31 + 28 = 172

Then divide by 8, since there are 8 values in this set, leading to 172/8 = 21.5

The mean of the original set is 21.5

We'll come back to this later.

------------------

If you sort the values of {22, 20, 23, 2, 21, 25, 31, 28} you would get the list {2, 20, 21, 22, 23, 25, 28, 31}

Cross off the first and last number to reduce things to this smaller set {20, 21, 22, 23, 25, 28}

Repeat again, cross off the first and last number, and we now have {21, 22, 23, 25}

Do that one more time to be left with {22,23}

The median is the value at the midpoint of 22 and 23. Add these up and divide by two: (22+23)/2 = 45/2 = 22.5

The median is 22.5

The items lower than the median are L = {2, 20, 21, 22} while the items in the upper set above the median are U = {23, 25, 28, 31}.

You should find the median of set L is 20.5 and the median of set U is 26.5

Therefore Q1 and Q3 are 20.5 and 26.5 respectively

Q1 = 20.5

Q3 = 26.5

Use these two values to get the interquartile range (IQR)

IQR = Q3 - Q1

IQR = 26.5 - 20.5

IQR = 6

Then we can compute the lower fence which I'll call m

lower fence = Q1 - 1.5*IQR

lower fence = 20.5 - 1.5*6

lower fence = 11.5

We can see the data value "2" is smaller than the lower fence 11.5; anything below the lower fence is considered an outlier.

------------------

All of the previous section was to find if we had an outlier, and identify what that outlier is. We found the single outlier is 2.

We could have probably done all of that by simply noticing that 2 is far from the main cluster of other values in the 20s; however, sometimes picking the outlier isn't that straightforward. So it's good practice to use the method described above.

Anyways, we'll remove the outlier "2" and we're left with this set {22,20,23,21,25,31,28}

Add up those values to get

22 + 20 + 23 + 21 + 25 + 31 + 28 = 170

Then divide that by 7, since we tossed out one value, and we get

170/7 = 24.2857 approximately

This is new mean.

------------------

To summarize:

The mean of the original set is exactly 21.5The mean of the set after we remove the outlier is roughly 24.2857

We can see that the mean has increased. The very small outlier pulls on the mean to get smaller. Removing said outlier will then increase the mean so that it gravitates toward the main cluster. The mean is the center so if you remove the far outlier, then the center gravitates toward where the other values are located.

List them fastest to slowest.

Joe - 12 1/2
Ellen - 12.09
Steve - 12 2/5
Patty - 12.8

Answers

Answer:

Ellen- 12.09

Steve- 12 2/5

Joe- 12 1/2

Patty- 12.8

Point J (-4, -6) and point K (4, 4) are located on a coordinate grid. Which measurement is closest to the distance between point J and point K in units?

Answers

Answer:

The points are sqrt(164) or 2sqrt(41) units apart.

Explanation:

You didn't provide the options in your question. But to find the distance, you need to use the distance formula.

d=sqrt((y2-y1)^2 + (x2-x1)^2)

d is the distance, and (x1, y1) and (x2, y2) are the points.

Use point J (-4,-6) for (x1,y1) and point K (4,4) for (x2, y2).

d=sqrt((4-(-6))^2 + (4-(-4))^2)

=sqrt(10^2 + 8^2)

=sqrt(100+64)

=sqrt(164)=2sqrt(41)

You can compare this to the answer options and find the closest. Hope I could help! :)

i need help on this loll

Answers

Answer: The translation rule that maps point D ( 7 , − 3 ) onto point D ' ( 2 , 5 )

is (x , y) → (x - 5 , y + 8)

Step-by-step explanation:

Let us revise the translation

If the point (x , y) translated horizontally to the right by h units then its image is (x + h , y)

If the point (x , y) translated horizontally to the left by h units then its image is (x - h , y)

If the point (x , y) translated vertically up by k units then its image is (x , y + k)

If the point (x , y) translated vertically down by k units then its image is (x , y - k)

(x , y) → (x ± h , y ± k) the right arrow symbol used to show the

translation from a point to its image

Example:

∵ P (0 , 0) → P' (1 , 2)

∴ The rule is (x , y) → (x + 1 , y + 2)

Let us find the translation rule that maps point D ( 7 , − 3 ) onto

point D' (2 , 5)

∵ Point (x , y) = (7 , -3)

∵ Its image after translation (x + h , y + k) = (2 , 5)

∴ x + h = 2

∵ x = 7

∴ 7 + h = 2

- Subtract 7 from both sides

∴ h = -5

∵ y + k = 5

∵ y = -3

∴ -3 + k = 5

- Add 3 to both sides

∴ k = 8

∴ The rule of translation is (x , y) → (x - 5 , y + 8)

The translation rule that maps point D ( 7 , − 3 ) onto point D ' ( 2 , 5 )

is (x , y) → (x - 5 , y + 8)

The TV streaming service changed their pricing from $15 per month to $12 per month . By what percent did the price per month change?

plz help asap

Answers

Answer:

I think 3 percent

Step-by-step explanation:

I believe the first answe is correct of 3%

Help pls! Find the slope

Answers

Answer:

slope is -1

Step-by-step explanation:

because it's going one unit down at a time

Answer:

Step-by-step explanation:

The slope, m, is defined as

m=(y2-y1)/(x2-x1)

So we just pick any two points. I’ll use (-3,5) and (5,-3)

m=(-3-5)/(5- -3)

m=-8/8

Answers

Answer:

A≈226.98in²

Step-by-step explanation: Hope that this helps

A=226.98in. Squared

Olivia has budgeted 40% of her savings for a new phone. If she had $500 in her savings account, how much can she spend on the phone?

Answers

Answer:200$

Step-by-step explanation:

Ray drove her car for 2 1/4 h and traveled 217.35 km. If she drives her car at the same speed for 3 hours, how many km will Ray travel?

it’s b its honestly rlly easy if you look at it and take time but it’s also hard but answer is definitely b

When three smaller squares are joined at their vertices to form a right triangle, the combined area of the two smaller squares is the same as the area of the larger square. Which of the three squares answers does NOT support this statement?

Answers

Answer:

i think option 2

Step-by-step explanation:

i i'm sorry if wrong

Answer:

Step-by-step explanation:

NEED HELP REALLY FAST!!!!!!!!!

Answers

I think the answer would be 8 :) hope this helps !

the answer is 10, hopefully this helps:)

Meow. ._.

Maybe a little help?

explain what information the y-intercept and the coefficient of n represents. $CMighty= 49 + n $CNo−Shrink = 4.5n

Answers

Bad formatting for question

1. An angle bisector of a triangle is also an altitude. Prove the triangle is isosceles.
2. A median of a triangle is also an altitude. Prove the triangle is isosceles.
3.Prove that corresponding altitudes in congruent triangles are congruent.
Use statement reason proof for these questions. Do not do random answer for points or i will report you

Answers

Answer:

Answer:

a. 18+ ( -20)

Step-by-step explanation:

solving this we get

18- 20 which is, equal to the value given!!

Answer:

The answer is A: 18 + (-20)

Step-by-step explanation:

You can add 18 by -20 to get -2, as 18 - 20 is -2. That's all from me! Good luck!

Which shape has only 1 face?
A. pyramid
B. prism
C. cone
D. cube

Answers

Answer:

Step-by-step explanation:

Select all the expressions that are equivalent to 7(2−3).

A.
9−10

B.
14−3

C.
14−21

D.
(2−3)∙7

E.
7∙2∙(−3)

please help

Answers

D
B
A

Hope this helps

Answer:

C,and D

Step-by-step explanation:

Pls help meh Area of a Circle (rounded)
TROLL FOR POINTS= REPORT

FIRST AND CORRECT ANSWER= BRAINLIEST

( NO LINKS )

Answers

Answer:

28.27 or 28 for rounded

Step-by-step explanation:

Pi r^2 pi(3)^2

28.27 or it’s either 28 hope that helped

During a 5th grade field trip to the Museum, Ms. Jones bought 33 student tickets and one adult ticket for herself. Her ticket cost $3.00 more than a student ticket. She spent a total of $300.50.Enter, in dollars, the cost of a single student ticket

Answers

Answer: $ 9.02 I think (Might be wrong)

I believe it is 9.01

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