1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
makkiz [27]
3 years ago
9

A circular running track is 1/4 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is her speed?

Include the unit of measure
Mathematics
1 answer:
Nina [5.8K]3 years ago
6 0

Answer:

Her speed is 5 miles per hour.

Step-by-step explanation:

The formula of the speed is given by:

v = \frac{d}{t}

In which d is the distance, and t is the time.

In this question:

Distance: 1/4 mile = 0.25 miles.

Time: 1/20 hour = 0.05 hours.

So

v = \frac{d}{t} = \frac{0.25}{0.05} = 5

Since the distance is in miles and the time in hours, the speed is in miles per hour.

Her speed is 5 miles per hour.

You might be interested in
Please help!!!! I obviously don’t need 10,11,and 12
tatyana61 [14]
For 1-5, you add up both angles that are stated and then subtract that number from 180 to get the missing angle.
For 6, the top angle is equal to 40 since half of it equals 20. The other 2 angles are equivalent, so we subtract 40 from 180 and then divide that number by 2 to get your answer.
For 7, you see two triangles on one. The first triangle has the angles of 60 and 60, and since a triangles angles add up to 180, we add both angles and subtract it from 180 to get that side. Since a straight angle is also equal to 180 degrees, the answer you just got and the answer you’re looking for are supplementary angles. So, you subtract that answer from 180 to get your answer.
For 8, you do the same thing with supplementary angles. Since the straight lines is equal to 180 degrees, we subtract 144 from it to get your answer.
For 9, we do the same thing that we did with number 7. The first triangles sides are 40 and 70, so we add those together and subtract it from 180 to get the missing side. That side and the one that you’re looking for are supplementary angles, so you subtract that side from 180 to get your answer.
3 0
3 years ago
In a class of 54 students there are 6 more girls than boys. What is the ratio of the number of boys to the numbers of girls
OLEGan [10]

Answer:

6:54?

Step-by-step explanation:

Im really sorry if it's wrong but I'm pretty sure thats the answer since its a ratio

8 0
3 years ago
Mary's math certificate is 10 inches tall and 13 inches wide. Mary wants to put the certificate
wlad13 [49]

Answer:

$219.70

Step-by-step explanation:

First, you need to find the area of the certificate, which you can do by multiplying 10*13, since it is a rectangle. 10*13 is 130. Then, multiply 130 by the price per inch, which is $1.69. 130*1.69=219.7, which in financial terms would amount to $219.70.

8 0
3 years ago
What equals 60 36 and 48
Deffense [45]
60. 1 times 60 equals 60 2 times 30 equals 60 3 times 20 equals 60 4 times 15 equals 60 5 times 12 equals 60 6 times 10 equals 60 10 times 6 equals 60 12 times 5 equals 60 15 times 4 equals 60 20 times 3 equals 60 30 times 2 equals 60 60 times 1 equals 60                                                                                                                                                                                                     1 times 36 equals 36 2 times 18 equals 36 3 times 12 equals 36 4 times 9 equals 36 6 times 6 equals 36 9 times 4 equals 36 12 times 3 equals 36 18 times 2 equals 36 36 times 1 equals 36

1 times 48 equals 48 2 times 24 equals 48 3 times 16 equals 48 4 times 12 equals 48 6 times 8 equals 48 8 times 6 equals 48 12 times 4 equals 48 16 times 3 equals 48 24 times 2 equals 48 48 times 1 equals 48
7 0
3 years ago
Read 2 more answers
In a science test, Jamie solved 42 correct and 18 incorrect answers. What is the percentage of correct question?
uysha [10]
It would have to be B
4 0
3 years ago
Read 2 more answers
Other questions:
  • Thomas is a designer for Hull Toys. He is married, earns $526 weekly, and claims no allowances. His gross pay to date this year
    10·1 answer
  • Carolyn is making a quilt using blocks like the one shown below. All the shaded squares are the same size and all the shaded tri
    7·2 answers
  • Liliana takes 4 breaths per 10 seconds during yoga.At this rate,about how many breaths would liliana take in 2 minutes of yoga
    13·1 answer
  • -x+10=5x-12 the answer
    6·2 answers
  • A piece of paper is in the shape of a rectangle. The piece of paper is 1 5/8 inches (in.) wide and 8 3/4 in. long. A student cut
    9·1 answer
  • The product of the roots of x2 + 6x - 55 = 0 is:<br> -55<br> 55
    7·2 answers
  • Henry and 28 classmates go on a
    13·1 answer
  • How much air can the basketball<br> hold? With a radius of 3 inches. Round to the nearest hundredth.
    6·1 answer
  • What are two numbers that multiply to -28 and add to 3?
    9·2 answers
  • HELP PLEASE! THIS IS A WORD PROBLEM 30 POINTS!!!!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!