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
Taya2010 [7]
3 years ago
8

The radius of a circular track is 0.2 mile. Ellie ran around 3 times. How many kilometers did she run

Mathematics
1 answer:
My name is Ann [436]3 years ago
6 0
Circumference = 2πr
So the circumference of the track is C = 2π .2  or .4π
3 times around the track is .4π x 3 or 1.2π  - this is the answer but most teachers will want you to use 3.14 for pi.
so 1.2 x 3.14 = 3.768 km

Do you notice that I waited until the end to use the actual value of pi (3.14) in my calculations.
Keeping things in pi units until the very end saves time.  
You might be interested in
Able, Ben and Cal each played a game able's score was six times ben's score, Cale score was a hird time of Able's score write do
Svetradugi [14.3K]

Answer:

Abel to Ben: 6

Abel to Carl: 3

Ben to Carl: 0.5

Step-by-step explanation:

First we formulate the problem in equations:

Abel = 6 * Ben

Cale = Abel / 3

If Cale's score is Abel's score over 3, so Abel's score is 3 times Cale's score.

If Abel's score is 6 times Ben's score, and 3 times Cale's score, then Cale's score is 2 times Ben's score (so Ben's score is 0.5 times Cale's score)

So, the ratio between all scores are the following:

Abel to Ben: 6

Abel to Carl: 3

Ben to Carl: 0.5

8 0
3 years ago
Read 2 more answers
Line a is parallel to line b, m 6=85 and m 3=2x. Find m 1.
FromTheMoon [43]
The sum of the angles <6 and <3 must be 180. Since <3 and <1 are opposed to the top, their measure are equal. We need then to calculate the measure of angle >3 = 180 - <6 = 180-85=95

m(<1) = 95 

8 0
3 years ago
Im not sure how to do this question
Pavel [41]
B. -9 is the most negative one, -2 is the least.
Hope this helps you.
3 0
2 years ago
Read 2 more answers
If the discriminant, b^2-4ac is ___, a quadratic will have two real roots, two points of intersection with the x-axis.
den301095 [7]

If the discriminant, b² - 4ac is<u> positive</u>

<h3>How to complete the statement?</h3>

From the question, we have the following equation of discriminant

The discriminant (d) is calculated as

d = b² - 4ac

The solutions of a quadratic equation are dependent on the following conditions

  • If d = 0, the quadratic equation has 1 real solution
  • If d < 0, the quadratic equation has imaginary solutions
  • If d > 0, the quadratic equation has 2 different real solutions

This means that "d > 0, the quadratic equation has 2 different real solutions" implies that the discriminant is positive

Hence, the complete statement is (b) positive

Read more about discriminant at

brainly.com/question/64103

#SPJ1

6 0
11 months ago
Plz help! What is the surface area of the figure?​
dexar [7]

Answer:

483 ft²

Step-by-step explanation:

2(7x7)=   98

3(5x12)=180

2(12x5)=120

2(5x5)=   50  

1(7x5) =  <u> 35   </u>

              483

               

6 0
3 years ago
Other questions:
  • IMPLACE
    7·1 answer
  • Need help asap please...
    13·1 answer
  • 18. Which expression is equivalent to
    7·1 answer
  • To decrease an amount by 18%, what single multiplierwould you use?
    9·1 answer
  • The function f(x) is translated up 4 units. Which equation represents the translated function?
    12·1 answer
  • What was the activity?
    9·1 answer
  • What is this vertex of the graph ?
    8·1 answer
  • Fill in the blank for the following two-column proof.<br> Given: 3x+1=-14 Prove: x=-5
    15·2 answers
  • What is the measure of a?​
    13·1 answer
  • What is the measure of angle D?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!