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
Irina-Kira [14]
3 years ago
11

A track is 200 meters long. How many times must Julius run around the track to run 3 kilometers ?

Mathematics
1 answer:
atroni [7]3 years ago
4 0


Here is how you would do this: If there are 1000 meters in one kilometer, and you know that this track is 200 meters long, then you can find how many times Julius must run around the track in order to reach ONE kilometer:

1000 meters / 200 meters = 5 times in around the track for ONE kilometer.

To find how many times Julius would need to run around to reach THREE kilometers you simply do the following:

5 x 3 = 15 ---> Julius would need to run around the track 15 times in order to reach 3 kilometers.

You might be interested in
What is the value of x? 36 72 108 144
Tom [10]

Answer: 72

Step-by-step explanation:

just did it

7 0
3 years ago
Help! <br><br> Find the exact value of tan A in simplest radical form.
zvonat [6]
6/7 would be tan A
hope this helps
6 0
2 years ago
the numbers of girls in the choir is 4 times the number of boys in the choir .the total number of students is 60..how many girls
Inessa05 [86]
First, make up some variables to represent the number of Girls and Boys in the choir.  

B = number of boys
G = number of girls

You know that there are 4 times as many girls in the choir as boys.  Therefore, the equation you can write is:
\frac{B}{G} =  \frac{1}{4}

If you cross-multiply, then you get the simplified equation:
G = 4B

Intuitively this makes sense since if you multiplied the number of boys in the class by 4, that would be equal to the number of girls you have.

Now, we know that the total class size is 60. So girls plus boys equals 60:
G+B = 60

To solve the equation, replace the G in this equation with the replacement you found before, 4B.
G + B = 60 -->
4B + B = 60 -->
5B = 60 -->
B = 12

However, you are trying to find the number of girls, so plug the answer back into your equation.
G + B = 60 -->
G + 12 = 60 -->
G + 12 -12 = 60 - 12 -->
G = 48

The number of girls you have is 48.

6 0
3 years ago
A basketball player shoots a basketball that reaches a height above 15 feet before landing back on the ground exactly after 7 se
Papessa [141]

Answer:

I and IV

Step-by-step explanation:

Since the height of the basketball reaches above 15 feet, hence the maximum of the function should be greater than 15 feet. Also at 7 seconds, the ball is on the ground, hence f(7) = 0 feet

The maximum of a function is at x = -b/2a

i) f(x) = -(x-3)² + 16 = -(x² - 6x + 9) + 16 = -x² + 6x + 7

The maximum of a function is at x = -b/2a = -6 / 2(-1) = 3

f(3) = -(3-3)² + 16 = 16 > 15

Also f(7) = - (7 - 3)² + 16 = 0

Hence this option is correct

ii) f(x) = -x² + 8x - 7

The maximum of a function is at x = -b/2a = -8 / 2(-1) = 4

f(4) = -4² + 8(4) - 7 = 9 < 15   not correct

Also f(7) = - 7² + 8(7) - 7 = 0

Hence this option is not correct since the maximum f(4) = 9 < 15  

iii)  f(x) = -(x-3)² + 14 = -(x² - 6x + 9) + 14 = -x² + 6x + 5

The maximum of a function is at x = -b/2a = -6 / 2(-1) = 3

f(3) = -(3-3)² + 14 = 14 < 15

Also f(7) = - (7 - 3)² + 14 = -2

Hence this option is not correct since the maximum f(4) = 9 < 15 and f(7) ≠ 0

iv)f(x)  = -x² + 6x + 7

The maximum of a function is at x = -b/2a = -6 / 2(-1) = 3

f(3) = -(3)² + 6(3) + 7 = 16 > 15

Also f(7) = - (7)² + 6(7) + 7 = 0

Hence this option is correct

3 0
3 years ago
Help needed! (will mark as brainliest)
Aloiza [94]

Answer:

it is the 3rd option

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • EFGH is a rhombus.
    11·2 answers
  • What is the volume of the right triangular prism, in cubic meters? Round to the nearest cubic meter. A triangular prism. The tri
    11·2 answers
  • There\ were\ 750\ questions\ in\ a\ mathematics\ book.\ \ Sam\ answered\ 82\%\ of\ them\ correctly.\ \ how\ many\ questions\ did
    6·1 answer
  • You randomly choose one of the tiles shown below. What is the probability of choosing a number less than 5? *
    15·1 answer
  • Which point is the vertex of the graph defined by f(x) = 6|x − 2| − 5? A. (6, 5) B. (2, -5) C. (0, 0) D. (6, -2)
    15·1 answer
  • On Monday, a local hamburger shop sold a combined total of 488 hamburgers and cheeseburgers. The number of cheeseburgers sold wa
    5·1 answer
  • 1/4 to the 4th power
    9·2 answers
  • What is mean of 32 48 22
    12·2 answers
  • A multiple choice test has 7 questions each of which has 4 possible answers, only one of which
    5·1 answer
  • You enter a room. 2 dogs, 4 horses, one giraffe, and a duck are laying on a bed. 3 chicken are flying over a chair. How many leg
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!