chang wants to know if he is improving his skill on the cello. he created a scatter plot and drew a line of best fit

Answer:

Selling price of the first pipe = $1.20

Profit = 20%

Let’s try to find the cost price of the first pipe

CP = Selling price - Profit

CP = 1.20 - 20% of CP

CP = 1.20 - 0.20CP

CP + 0.20CP = 1.20

1.20CP = 1.20

CP = 1.201.20

CP = $ 1

Selling price of the Second pipe = $1.20

Loss = 20%

Let’s try to find the cost price of the second pipe

CP = Selling price + Loss

CP = 1.20 + 20% of CP

CP = 1.20 + 0.20CP

CP - 0.20CP = 1.20

0.80CP = 1.20

CP = 1.200.80

CP = $1.50

Therefore, total cost price of the two pipes = $1.00 + $1.50 = $2.50

And total selling price of the two pipes = $1.20 + $1.20 = $2.40

Loss = $2.50 – $2.40 = $0.10

Therefore, Mr. Jones loss 10 cents.

i know that this is hard to understand so tell me if you need help

Have a great day :)

Answer:

(d) lost 10 cents

Step-by-step explanation:

Answer:

1. A

2. C

3. D

4. B

Answer:The mean goes up from approximately 80.4 to 82.

Step-by-step explanation:

Before adding 101°, the mean i2:

(58 + 61 + 71 + 77 + 91 + 100 + 105 + 102 + 95 + 82 + 66 + 57)/12 = 80.4

After adding the value 101°, the mean is:

(58 + 61 + 71 + 77 + 91 + 100 + 105 + 102 + 95 + 82 + 66 + 57 + 101)/13 = 82

The mean goes up from approximately 80.4 to 82.

Answer:

A. The constant ratio of y/x is 12/5

Step-by-step explanation:

The ratio of y to x is constant which is 12/5. Hence option A is the correct option.

What is a constant?

The term "constant" has several meanings in mathematics. When used as a noun, it can have any of the following two meanings:  a constant, clearly defined number or another immutable mathematical object.

Given table is

x                 y

5/6             2

25/6          10

125/6        50

625/6      250

When x = 5/6 and y = 2:

x/y = (5/6)/2 = 5/12

∴y/x = 5/12

When x = 25/6 and y = 10:

x/y = (25/6)/10 = 25/60 = 5/12

∴y/x = 5/12

When x = 125/6 and y = 50:

x/y = (125/6)/50 = 125/300 = 5/12

∴y/x = 5/12

When x = 625/6 and y = 250:

x/y = (625/6)/250 = 625/1800 = 5/12

∴y/x = 5/12

To learn more about ratio, click on the below link:

https://brainly.com/question/5232821

#SPJ1

Answer:

Step-by-step explanation:

H

Answer:

12+12=24. 24+7=31

Step-by-step explanation:

31 inchess

Answer:

112

Step-by-step explanation:

4 [ 4 . 5 - 2 ( 1 . 2 ) ]

4[4x5-2x-4}

4[20+8]

4[28]

112

Answer:

It is (1,6)

Step-by-step explanation:

Answer:

4. O+ donors to O- donors.

5. B+ to A- donors.

Step-by-step explanation:

Just try to find the numbers on the chart and then find which type of donor the number matches with.  Hope this helps!

Answer:

4. O+ donors to O- donors.

5. B+ to A- donors.

hope this helps

Step-by-step explanation:

Answer:

$4.22 Is your answer.

Step-by-step explanation:

Answer:

121

Step-by-step explanation:

11 x 11 =121

If you multiply 11 and 11 you will get 121. Meaning 121 would be your perfect square for this problem

Answer:the last one (x,1,2,3, y,0,1,4,9)

Step-by-step explanation:

$500

Step-by-step explanation:

200 is 40%

I doubled it to get 400$ for 80%,

then I divided 200$ by 2 to get 100, same with the percent. in total, 500$=100%

Answer:

The bottom question is wrong. You have to multiply 8 to get the amount earned. But the rest is correct.

Step-by-step explanation:

6.25 x 8 = 50

12.5 x 8 = 100

18.75 x 8 = 150

25 x 8 = 200

31.25 x 8 = 250

Answer:

Helloooo. The bottom part is the only part of ur answer that's wrong. It is 8.

Step-by-step explanation:

I believe the other person that answered this shows this part correctly :)

Answer:

The correct answer is C - 7.8 < 7 5/6 < 7.9

Step-by-step explanation:

First, convert 7 5/6 to decimal form --> 7.83.

If you don't know how to convert, think about what 5/6 is equal to and put it in decimal form. Add your decimal to the whole number, and there is your answer.

7.83 is in between 7.8 and 7.9, so it must be the answer.

I hope this helps!

Answer:

The correct answer is C - 7.8 < 7 5/6 < 7.9

Step-by-step explanation:

First, convert 7 5/6 to decimal form --> 7.83.

If you don't know how to convert, think about what 5/6 is equal to and put it in decimal form. Add your decimal to the whole number, and there is your answer.

7.83 is in between 7.8 and 7.9, so it must be the answer.

I hope this helps!

Answer:

x=8 hope it helps

Step-by-step explanation:

Answer:

Y=74, x=106.

Step-by-step explanation:

First, if you will notice, that 16+Y=90. Why? Because there is a square instead of a semicircle at the angle, which means that 16+Y=90. 90-16=74, so Y is 74. Then, we see that 90 plus an unknown angle equals x. But, using a rule of geometry, we know that the unknown angle is 16. So, x=90+16, and since 90+16 is 106, we get Y=74, X=106.

Answer:

Step-by-step explanation:

Wilson-70%, artholdi-90%, jonhson-70%, Garcia-60%, o'malley-90%

round each of them to the nearest whole percentage (nearest whole number).

Answer:

$8.25

Step-by-step explanation:

Shoes rental cost $2.75

Bowling cost $2.50 = 2.50 x3 = $7.50

1/2 price voucher for bowling  =  7.50 x 1/2 = $3.75

Pretzel cost $1.75

Total cost 2.75+3.75 + 1.75 = $8.25

27 Cm² (C)

...............

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

Explanation:

It's not directly stated, but I'm assuming that there's symmetry going on in terms of the triangle on the left being a mirror copy of the triangle on the right. If that assumption is true, then we have another "3 cm" along the bottom edge. In total, the bottom edge is 3+6+3 = 12 cm long.

The top edge, parallel to the bottom one, is 6 cm. We'll denote the two parallel sides to be the base lengths and we could write [tex]b_1 = 6 \text{ and } b_2 = 12[/tex]. The small subscript just helps us differentiate between the two base lengths.

The height is the vertical dashed line of 3 cm. This means h = 3. The height is always perpendicular to the base.

We'll plug those three variables into the area of a trapezoid formula below

[tex]A = \frac{h*(b_1+b_2)}{2}\\\\A = \frac{3*(6+12)}{2}\\\\A = \frac{3*(18)}{2}\\\\A = \frac{54}{2}\\\\A = 27\\\\[/tex]

The area is 27 square cm

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

Another way to get the answer is to break the trapezoid into three pieces: two triangles and a rectangle in between.

One triangle has an area of base*height/2 = 3*3/2 = 9/2 = 4.5 square cm, which means two triangles combine to an area of 2*4.5 = 9 square cm.

The rectangle has area of length*width = 6*3 = 18 cm^2

The trapezoid's area is the combination of what we found: 9+18 = 27 cm^2

Answer:

758

Step-by-step explanation:

758 is the answer sheesh

Answer:

648

Step-by-step explanation:

two triangles=96

two rectangles=160 each= 360

big rectangle=192

96+360+192=648

Answer:

process of elimination

Step-by-step explanation:

I've been using this method since i was in like second grade and it usually works for me

Answer:

I usaally take of the one theta would not even be close to being right take of the one the diffrent from the other and get my right answer hope this helps

Step-by-step explanation:

Answer:

1/3

Step-by-step explanation:

Answer:

1,659 is your answer

Step-by-step explanation:

I'm gonna assume the question being asked is 19 times 21 and if that's true the answer is 1659. My assumption is probably incorrect, though.

Answer:

Pretzels cost 50 cents less than popcorn bags. The variable x represents the number of pretzels sold and y represents the number of popcorn bags sold. The sales total was $215.

Step-by-step explanation:

Answer:

Pretzels cost 50 cents less than popcorn bags. The variable x represents the number of pretzels sold and y represents the number of popcorn bags sold. The sales total was $215.

Step-by-step explanation:

The average difference is very less of all the elements in a data set than the mean of the same data set.

It is defined as the measure to show the variation in data set in other words between the mean and every data value the distance is known as the MAD.

As we know the mean absolute deviation is the average distance between each data point and the mean.

The mean (average) difference between each data value and the data set's mean is known as the mean absolute deviation. It can be used to quantify the data set's dispersion as well as to solve statistical issues in the actual world.

If the mean absolute deviation is close to 0 it means the average difference is very less of all the elements in a data set from the mean of the same data set

Thus, the average difference is very less of all the elements in a data set than the mean of the same data set.

Learn more about the mean absolute deviation here:

brainly.com/question/10528201

Answer:

apples: 17

oranges: 7

bananas:11

Answer:

k= 11/2

Step-by-step explanation:

Answer:

k = 2.5

Step-by-step explanation:

In order to solve this equation we do the following:

[tex]9 = 3(\frac{1}{2} + k)\\[/tex]

Divide both sides by 3 and get...

[tex]3 = \frac{1}{2} + k\\[/tex]

Subtract 1/2 from both sides and get...

k = 2.5