Mathematics High School

If lin runs 21 laps at the same rate, how long does it take her 25.6 minutes How many laps per minute is that? __ laps

Answers

Answer 1

Answer: 0.82 laps per minute

Step-by-step explanation:

Lin is running 21 laps in 25.6 minutes.

To find out her speed in laps per minute, divide the distance she has ran by the time it took her to run it.

= Distance / time

= 21 / 25.6

= 0.82 laps per minute

Related Questions

−3x − 8y = 20 −5x + y = 19 solved by substitution

Answers

Delete as this is the wrong answer. Made a typo in the answer.

Answer:

x = [tex]\frac{-212}{3}[/tex]

y = 24

Step-by-step explanation:

-3x - 8y = 20  .... (1)

-5x + y = 19   .... (2)

What we can do is take the (2) equation

-5x + y = 19

and solve for y by adding 5x to both sides

y = 24

now that we have y we substitute it in for y in equation (1)

-3x - 8(24) = 20

-3x - 192 = 20

we want to solve for x so we need to get its self.

add 192 to both sides

-3x = 212

now we divide both sides by -3. It's going to be a fraction.

x = [tex]\frac{-212}{3}[/tex]

Answer:

x=-4

y=-1

Step-by-step explanation:

-3x-8y=20

-5x+y=19

rewrite for y:

y=19+5x

substitute y

-3x-8(19+5x)=20

-3x-152-40x=20

-3x-152-40x+152=20+152

-43x=172

-43x/-43=172/-43

x=-4

substitute x

-5(-4)+y=19

20+y=19

y=-1

check:

-3(-4)-8(-1)=20

12+8=20

-5(-4)+-1=19

20-1=19

what are the missing angle measurements?

Answers

Answer:

40°

Step-by-step explanation:

110 + 30 is 140. Since the sum of every triangle's angles are 180, you do 180-140. the answer is 40

a sculptor needs to lift a peice of marble its a cuboid with dimentions 1m by 0.6m by 0.3 m, marble has a density of 2.7g/cm cubed

Answers

Answer:

486 kg

Step-by-step explanation:

A line has a gradient of 4 and passes through the point (1, 9). What it's equation?

Answers

answer: y - 4x - 5= 0

Step-by-step explanation:

y - y1 = m(x - x1)y - 9 = 4( x - 1)y - 9 = 4x - 4y - 4x = -4 + 9y - 4x = 5y - 4x - 5 = 0

Given the function:
g(x) = -2x - 5
What value of x will result in g(x) = 1 ?

Answers

Answer:

X=-3

Step-by-step explanation:

g(X)=1

g(X)=-2x-5

1=-2x-5

1+5=-2x

6=-2x

X=-3

Replace g(x) with 1 and solve the regular equation.


-
What’s the median of 7 2 9 8 7 15 6 8

Answers

Answer:

The answer is 7.5

Step-by-step explanation:

Put them in order of smallest to largest

2,6,7,7,8,8,9,15

Pick out the middle number

answer is 7.5

1 Order them from smallest to biggest

2 Cross them one by one from each side to find the middle number.

3 If there are two numbers like in this question you add them and divide by 2.

7+8= 15

15÷2=7.5

A side of the triangle below has been extended to form an exterior angle of 122°. Find the value of x.

Answers

Answer:

is 32

Step-by-step explanation:

well you have 122-180 to get 58 is the other sides angle. plus you already have 90 degrees so 90 plus 58 equals 148-180 and you get 32

Answer:58

Step-by-step explanation:

A 3-column table with 4 rows. Column 1 is labeled Inequality with entries 8 greater-than 2, negative 10 less-than negative 5, 16 greater-than negative 40, negative 8 less-than 4. Column 2 is labeled Multiply each side by: with entries negative 2, 5, 8, negative 4. Column 3 is labeled New Inequality with entries A, B, C, D.

The table gives an inequality and a number to divide both sides of the inequality by. Identify the new, true inequality.

A:
B:
C:
D:
The inequality symbol is only reversed when dividing by a
number.

Answers

Answer:

A:

✔ –4 < –1

B:

✔ –2 < –1

C:

✔ 2 > –5

D:

✔ 2 > –1

The inequality symbol is only reversed when dividing by a

✔ negative

number.

Answer:

1. B
2. B

3. A

4. A
5. negative

Step-by-step explanation:

the airplane passengers consist of 70 adults and 14 children. What is the ratio of children to all passengers, in simplest form

Answers

Answer:

7:42

Step-by-step explanation:

children: all passengers

then simplify

hauler and gio went to the store. they each purchased pop and snacks. hailey purchased 1 pop and 4 snacks and spent $14. gio purchased 2 pops and 2 snacks and spent $10. how much did the store charge each pop and snack? (write a system of equations and use elimination to solve.)

Answers

Answer:

Cost of pop = $2

Cost of snacks = $3

Step-by-step explanation:

Let

Cost of pop = x

Cost of snacks = y

Hauler

x + 4y = 14

Good

2x + 2y = 10

x + 4y = 14 (1)

2x + 2y = 10 (2)

Using elimination method

Multiply (1) by (2)

2x + 8y = 28 (3)

2x + 2y = 10 (2)

Subtract (2) from (3) to eliminate x

8y - 2y = 28 - 10

6y = 18

y = 18/6

y = $3

Substitute y = 3 into (1)

x + 4y = 14 (1)

x + 4(3) = 14

x + 12 = 14

x = 14 - 12

x = $2

Cost of pop = $2

Cost of snacks = $3

An online furniture store sells chairs for $200 each and tables for $650 each. The store must sell no less than $12000 worth of chairs and tables each day. Write an inequality that could represent the possible values for the number of tables sold, tt, and the number of chairs sold, cc, that would satisfy the constraint.

Answers

The inequality that represents the possible values for the number of tables sold, tt, and the number of chairs sold, cc is $200cc + $650tt > $12,000.

What is the inequality ?

Here are inequality signs and what they mean:

> means greater than< means less than≥ means greater than or equal to ≤ less than or equal to

total cost of chairs sold + total cost of tables sold > $12,000

$200cc + $650tt > $12,000

To learn more about inequality, please check: https://brainly.com/question/5031619

#SPJ1

Gavin and Ethan are training for a race. Last week,gavin ran 7 kilometers and Ethan ran twice as far as gavin what is the total distance that gavin and Ethan ran last week express your answer in meters.

Answers

Answer:

14 km

Step-by-step explanation:

7x2

Answer the equation to move the ship. 1.2 - -2.3 = x ​

Answers

1.2- -2.3= 3.5 , 7/2

Bill buys a bag of 13 tangerines for $2.99. Find the unit price in dollars per tangerine. If necessary, round your answer to the nearest cent. ​

Answers

$0.23

$2.99/13= $.23 per unit of tangerine

CAN SOMEONE HELP ME I DON'T GET IT PLEASEE



The temperature was -2 degrees and then ended the day at 18.


​

Answers

Answer:

a rise of 20 degrees

Step-by-step explanation:

since it started at -2 degrees, you have to add enough to get out of the negatives.

-2 + 2= 0, then 0+18 to get to the 18°

-2 + 20 = 18

Steve puts an 18-foot ladder against his house. The ladder reaches a height of 15 feet on the house. How far
is the bottom of the ladder from the base of the house? Leave the answer as a simplified square root.

Answers

Im not sure if this is the worksheet your working on but here is the answer to the question

Angle 1 and angle 2 are supplementary angles. If the measure of angle 1 is 64°. What is the measure of angle 2?

Answers

Answer:

116

Step-by-step explanation:

supplementary means they add up to 180

So you do 180-64 and you get 116

helppppp MEEE!! i will also give brainiest

Answers

Answer:

1500

Step-by-step explanation:

WILL MARK THE BRAINLIEST
What is the standard form of the ellipse equation 25x^2 - 150x +9y^2 = 0

Answers

Answer:

I think its the third one.

Step-by-step explanation:

Lemme know if it's right!

I hope this helps u! :D

how many mins are in 4 and a half hours.

Answers

Answer:

270 minutes

Step-by-step explanation:

1 hour = 60 minutes

4 hours = 240 minutes

half hour = 30 minutes

240 minutes + 30 minutes = 270 minutes

what is √6 divide by √8

Answers

Answer:

The answer is 0 Lil Bro

Step-by-step explanation:

Hope that helps with you Middle school work!

Kevin wants to measure the area of his living room. The living room is a rectangle with a semi-circular alcove. What is the area of the room? Use 3.14 for it. o A. 201.87 ft? O B. 225.42 ft? OC. 230.13 ft2 D. 244.26 ft?​

Answers

Answer:

D

Step-by-step explanation:

PLZZZZZ help me with this problem

Answers

0.075.

Do the division on the fraction first, then add that to negative 1.125

Tickets to a play cost $7 each. As the
number of tickets increases, the total cost
increases. What are the independent and
dependent variables in this situation?

Answers

Answer:B

Step-by-step explanation:

Y+5=23

FREE BRAINLIEST IF YOU ANSWER CORRECTLY!! (50pts)

Answers

Answer:

34 feet

Step-by-step explanation:

8+8+6+6+3+3=17+17=34

34 feet

16+12+6=34

8+8= 16

6+6= 12

3+3= 6

16+12+6=34

I beg, give me brainliest, I know I'm late but PLEASE give me brainliest :(

Use the diagram to solve for x.

Answers

0 this is what I got

What is the value of x?

Answers

answer is x=13

sorry I had to get something for my mum

What is the inverse of y = 3* ?

Answers

It doesn’t have an inverse because it doesn’t pass the horizontal line test

A piggy bank has $6.95 and contains only nickels and dimes. If there are a total of 91 coins, how many nickels are there?​

Answers

Answer:

43 nickels in the piggy bank

HEY THERE! PLEASE ANSWER THE MATH QUESTION IN THE PHOTO! THE CORRECT ANSWER WILL BE MARKED AS BRAINLIEST ,GET POINTS AND I WILL ALSO FOLLOW YOU! THANKS! (if you can explain your answer)
(just c pls)

xoxo

Answers

Answer:

150

Step-by-step explanation:

45/300 is the probability of blue because out of 300, 45 were blue than times by 1000

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The population parameter of interest:_____.a. proportion who think obesity is not a serious problem.b. proportion of people who think obesity is a serious problem.c. proportion of people who answered the survey.d. proportion of people who did not answer the survey.3. The sampling frame:_____.a. all people except those who work at fast food restaurantfast food restaurants.b. people who think obesity is a problem.c. every 25th person leaving the restaurant.d. restaurant customers.4. The sample:____.a. people.b. every person leaving the restaurant.c. every 25th person leaving the restaurant.d. all people except those who work at fast food restaurantfast food restaurants.5. The sampling method, including whether or not randomization was employed:_____.a. questionnaire (non-random).b. not specified, non-random.c. not specified, but at least "random".d. systematic sampling.6. Any potential sources of bias you can detect and any problems you see in generalizing to the population of interest:A. Response bias is possible. The study is conducted in such a way as to achieve a desired response that may be different from the population in general.B. Non-response bias is possible. Since some people leaving the restaurant may not respond to theinterview, the study may misrepresent the general population.C. Undercoverage bias is possible. Since those interviewed just left a fast food restaurant commafast food restaurant, their opinions about obesity may differ from the population in general.D. There is no indication of bias. b19=11Hepppppp Hiii Janelle randomly surveyed 50 students. She found that 42 of the students had been to a music concert. There are 2,870 students at the school. Based on her survey, about how many students in the school have been to a music concert? 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