Mathematics Middle School

Students in a science class investigated how the speed of sound changes with the air temperature outside. The data are shown in the scatterplot.

Based on the scatterplot, what is the best prediction of the speed of sound when the air temperature is 45°C?

350 m/s

355 m/s

360 m/s

365 m/s

Students In A Science Class Investigated How The Speed Of Sound Changes With The Air Temperature Outside.

Answers

Answer 1

Answer:360 m/s

Step-by-step explanation:

Answer 2

The best prediction of the speed of sound when the air temperature is 45°C is 360 m/s option third is correct also the graph shows a positive correlation.

What is correlation?

It is defined as the relation between two variables which is a quantitative type and gives an idea about the direction of these two variables.

As we can see in the graph:

When the air temperature is 10°C the speed of sound is around 337m/s

When the air temperature is 20°C the speed of sound is around 344m/s

When the air temperature is 30°C the speed of sound is around 348m/s

When the air temperature is 40°C the speed of sound is around 355m/s

From the above observation, the air temperature increases the speed of the sound increases.

So when the air temperature reaches 45°C the speed of the sound will be 360 m/s.

Thus, the best prediction of the speed of sound when the air temperature is 45°C is 360 m/s.

Learn more about the correlation here:

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Related Questions

help plz this is 7th grade math

Answers

Answer:

16 + 5x^2 / y

I need help ASAP

Brian has 5 marbles, Sarah has 9 marbles, Jimi has 4 marbles, and Juan has 6 marbles. They want to redistribute the marbles so that each person has the same number of marbles. If the marbles are redistributed, then how many should each person get?

Answers

Answer:

Answer is

(5 + 9 + 4 + 6)/4

= 24 / 4

= 6

Answer:

6

Step-by-step explanation:

5+4+9+6

9+15

24

24÷4=6

Help me will give brainliest

Answers

Answer:

The first option is correct, 12/30 and 25/30

Step-by-step explanation:

To get common denominators, you need to find the GFC (greatest common factor) of 5 and 6, which is 30. Then you would need to make the fractions equal the same as the original fractions, by multiplying.

2/5 = ?/30 <- you can see that 30 is 6 times more than 5. so this means you multiply 2 by 6 to get 12. 12/30

5/6 = ?/30 <- you can see that 30 is 5 times more than 6. so this means you multiply 5 by 5 to get 25. 25/30

I need help with part B, just that part, plz help.
I will give brainliest to who ever answer this question.

Answers

Answer:

6

Step-by-step explanation:

260÷45=5.77

Round and it ends up being 6

Answer:

5

Step-by-step explanation:

45 * 120% = 54

260/54 = ~5 (rounded, as you cannot sell a fraction of a coat AND you must receive AT LEAST $260)

In order to sell jackets at this price and end with at least $260, you must sell 5 jackets.

can I please get help with it ​

Answers

The 3rd shape goes where your mouse is

This is hard help me if you want brainliest

Answers

To make the same amount of money as the hourly wage( $720) he would need to sell $7,200 worth of product. Hope this helped:)

one stone on easter island is 12 meters high. the nose of the statue is 3.3 meters long. If the proportional statue is only 10 meters high. How long will the nose be? write your answer in a decimal

Answers

Answer:

The nose will 2.75 meters long.

Step-by-step explanation:

Answer: 2.5 meters long

The box plots below show student grades on the most recent exam compared to overall grades in the class:

two box plots shown. The top one is labeled Class. Minimum at 70, Q1 at 74, median at 83, Q3 at 92, maximum at 100. The bottom box plot is labeled Exam. Minimum at 60, Q1 at 81, median at 87, Q3 at 91, maximum at 95.


Which of the following best describes the information about the medians? (1 point)

A) The exam outlier at 60 makes the IQR narrower and the median higher.
B) The class data is more evenly spread, which pulls its median down.
C) The class median is lower than the exam median.
D) The class Q3 is higher than the exam Q3.

Answers

Sorry A is not the answer

Answer:

Sorry but I don't have an explanation I guessed and got it right the answer is C)The class median is lower than the exam median. I hope this helps. :)

A line passes through the point (2,-6) and has an initial value of 6. What is the rate of change for this line?
A. -12
B. -6
C. -1/6
D. 6

Answers

-6
Just did the question

-6

We assume "initial value" means the y-intercept is (0, 6). The rate of change is the "rise" divided by the "run" between the two points.

rise = -6 -6 = -12 . . . . difference of y-values

run = 2 -0 = 2 . . . . . . difference of corresponding x-values

rate of change = rise/run = -12/2 = -6

The rate of change of this line is -6.

davis earned $32.12 for making 7 touchdowns at his football game.how much does he make per touchdown

Answers

Answer:

ABOUT 4.59

Step-by-step explanation:

divide 32.12 by 7

Hope this helps :)

Which expression is equivalent to
-4(2 - 6x) - 2.5x

A.3x -n 8
B.21.5x - 8
C.24x - 8
D.26.5x - 8

Answers

Answer:

It should be B

Step-by-step explanation:

Hope this helps

Answer:

B. 21.5x-8

Step-by-step explanation:

First use the distributive property to distribute the -4 to (2-6x) which gets

-8+24x, then combine the like terms within the equation -8+(24x-2.5x) to get -8+21.5x.

A number cube has sides numbered 1 through 6. The probability of rolling a 2 is 1/6.

What is the probability of not rolling a 2?

Enter your answer as a fraction, in simplest form, in the box.

please actually answer.

​

Answers

Answer:

5/6

Step-by-step explanation:

6/6 - 1/6 = 5/6

5/6 because 6/6-1/6=5/6

the table shows the probability for rain on different days what is the probability of rain on Monday and no rain on Tuesday.
Day /probability of rain
Monday/20%
Tuesday/30%
Wednesday/40%
Answers are
A 0.06
B 0.14
C 0.5
D 0.9

Answers

Answer:

A im pretty sure

Step-by-step explanation:

if it's not im sorry

the correct answer is A

look at photo i only need 1 2 3 6 and 7

Answers

I’m not sure if I’m right but I think it’s 123 0.3

When the y-intercept is positive, where does the line cross the y-axis on the graph? When it is negative?

Answers

Answer:

1. 0,0

2. negative 1

Step-by-step explanation:

It's called the "y intercept" and it's the y value of the point where the line intersects the y- axis. For this line, the y-intercept is "negative 1." You can find the y-intercept by looking at the graph and seeing which point crosses the y axis. This point will always have an x coordinate of zero.

Footlocker buys sneakers for $60 each and marks up the price by 30% so they can make a profit. What is the selling price of the sneakers at Footlocker

Answers

Answer:

now it would be $78

HELP! WILL GIVE BRAINLIEST IF CORRECT!

Answers

Answer:

First blank- $340

second blank- $400

Step-by-step explanation:

60/15=4

4 x 100(percent)=400

$400 is the total to get how much he still owes

400-60= 340

First blank = $340

Second Blank = $400

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing 100 m by their time. Is each statement true or false?

Select the correct choice for each statement then explain your reasoning.

1. Speed is a function of time.
2. Time is a function of distance.
3. Speed is a function of number of students racing.
4. Time is a function of speed.

Answers

Answer:

The true statements are (a) and (d)

Step-by-step explanation:

(a). Speed is a function of time : As seen from equation (1) Speed of the students varies according to the value of time. So, This a true statement.

(b). Time is a function of distance : Distance is not varying in the equation (1), it is fixed to be 100. So, time is not a function of distance because here the distance is made constant. So, This is false statement.

(c). Speed is a function of number of students racing : Speed is not depending on the number of students racing so sped is independent of the number of the students racing. Therefore, Speed is not a function of number of students racing. This is False statement.

(d). Time is a function of speed : As seen from equation (1) Time of the students varies according to the value of their speed. So, This a true statement.

The true statements are (a) and (d).

The true statement are (a) and (b)

help me solve this pls i make u a brainliest if it correct

Answers

Answer:

10 5/6

Step-by-step explanation:

There you go, hope this helped you

help me im stuck.....................

Answers

Answer:

1 minute = 4

Step-by-step explanation:

200 / 5 = 4

Simply find unit rate.

1 minute is equal to 4.

Find the surface area of the figure below. The face of each cube is 3 square units.

42
90
54
126

Answers

Answer:

54

Step-by-step explanation:

54

plz help!!! if both are answered= brainly

Answers

Answer:

The Slope of the table = 2

the slope is 2! sorry if i’m wrong.

Hi! Hope You're Having A More Than Amazing Day!
Please Help!

For Jimena to be accepted into her favorite college, she will have to earn an entrance exam score at least 2 standard deviations above the mean. Assume entrance exam scores are normally distributed, with a mean of 790 and a standard deviation of 50. What exam score does Jimena need to be accepted at her favorite college?

690
890
740
840

Answers

890 is the answer hope I got it

Please help me with this

Answers

7. 12 * 6 = 72

8. 8.50 * 4 = 34

9. 365*3 = 1095

10. 6*11  = 66

11. 5*5 = 25

12. 70*8 = 560

Answer:

7)  72 inches in six feet

8)  $34.00 for 4 shirts

9)  1095 days in 3 years

10) 66 cans in 11 boxes

11) 25 students in 5 groups

12) 560 pages in 8 notebooks

Explanation:

7)  12* 6= 72

8)  8.50* 4 = 34

9)  365 * 3 = 1095

10)  6 * 11= 66

11) 5 * 5= 25

12) 70 * 8= 560

Sally designs web pages for customers she charges $117.50 per webpage; however she must pay a monthly rental fee of $650 for office. Write an expression to determine her take-home pay after expenses. If Sally design 5 web pages last month what was her take-home pay after expenses?

Answers

Answer:

135.50 x 5  = y    How much money she makes without paying rent

Step-by-step explanation:

y-650 = the amount of money sally has after paying rent

help this is 7th grade mth

Answers

Answer:

y^8 goes to the last one

y^6 goes to the third one

y^5 goes to the second one

then the last one go to the first one

Answer:

(y)^-2 = 1/y^2, (y^3)^2 = y^6, y^8 -:- y^3 = y^5, and y^4 x y^4 = y^8

Step-by-step explanation:

When you divide y^8 -:- y^3, you subtract ^8-^3 = ^5, so its y^8 -:- y^3 = y^5

When you multiply y^4 x y^4, you add ^4 + ^4 = ^8, so it is y^4 x y^4 = y^8

When you multiply (y^3)^2, you multiply ^3 x ^2 = ^6, so its (y^3)^2 = y^6

And when you have a negative exponent,(^-2) you have to make it positive, so it would be y^-2 = 1/y^2

helppppp!
need helpp

Answers

1) 3a+2
2) 3c+6
3)-3z

sean earned $31,000 last year. if the first $25,000 is taxed at 9% and income above is taxed at 15%, how much does sean owe in tax?

$3,150
$3,550
$4,100
$4,320

Answers

$3150..................

The amount for Sean owe in tax will be $3,150.

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

We have to given that;

Sean earned $31,000 last year.

In the first $25,000 is taxed at 9% and income above is taxed at 15%.

Now,

Since, In the first $25,000 is taxed at 9%.

Hence, The amount of tax = 9% of $25,000

                                         = 9/100 × $25,000

                                         = $2,250

And, Income above is taxed at 15%.

Hence, The above income = $31,000 - $25,000

                                          = $6,000

So, The tax for above income = 15% of $6,000

                                              = 15/100 × 6,000

                                              = $900

Thus, The total tax = $2,250 + $900

                             = $3,150

Learn more about the percent visit;

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How many minutes are from 5:32 Pm to 6:19 Pm?? PLEASEEEE HELP!!!! THIS IS URGENT PLEASEE HELP

Answers

There are 28 minutes from 5:32 to 6:00 and 19 minutes from 6:00 to 6:19. Thus, there are 47 minutes from 5:32 pm to 6:19 pm.

Plz help me plz I give you brainliest

Answers

It is 5,250. 35% percent of 15,000 is 5,250 which is the answer

Answer:

5,250

Step-by-step explanation:

30,000÷.5= 15,000

15,000÷.35=5,250

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