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
Jlenok [28]
3 years ago
6

Does somebody know how to do this?

Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0

Answer:

Total length of running track is 371.24 m .

Step-by-step explanation:

Total running track = Running track around straight region + running track around curved region.

Running track around straight region = 2 × length of straight region

= 2×82 m

= 164 m

Running track around curved region = 2 × length of curved region

= 2 × π × radius of curved region

= 2 × 3.14 × 33 m

= 207.24 m

Therefore , total length  of running track = 164 + 207.24 m

= 371.24 m

You might be interested in
A tank contains 300 liters of fluid in which 40 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pu
bonufazy [111]

Answer:

A(t) = 300 -260e^(-t/50)

Step-by-step explanation:

The rate of change of A(t) is ...

A'(t) = 6 -6/300·A(t)

Rewriting, we have ...

A'(t) +(1/50)A(t) = 6

This has solution ...

A(t) = p + qe^-(t/50)

We need to find the values of p and q. Using the differential equation, we ahve ...

A'(t) = -q/50e^-(t/50) = 6 - (p +qe^-(t/50))/50

0 = 6 -p/50

p = 300

From the initial condition, ...

A(0) = 300 +q = 40

q = -260

So, the complete solution is ...

A(t) = 300 -260e^(-t/50)

___

The salt in the tank increases in exponentially decaying fashion from 40 grams to 300 grams with a time constant of 50 minutes.

6 0
3 years ago
Read 2 more answers
I am operations that undo each other like multiplication and divison
umka2103 [35]
What's factoring 8 but not a multiple of 4. 8 and 4
8 0
3 years ago
A scale model of a building has a height of 1/5 meter. The scale of the model is 1cm=0.5m. What is the height of the building?
Elenna [48]

Answer:

2000 meters

Step-by-step explanation:

first you have to convert the meters into centimeters so then 1cm=100 cm

1/5 meter=20 cm

20*100=2000

2000 centimeters or 20 meters

hope this helps

brainliest?

6 0
3 years ago
Please help again, best answer = brainliest
tangare [24]
I think the answer would be B :)
4 0
3 years ago
Dayren is driving to visit family. She drives at a average of 65 miles per hour. She drives 227.5 miles before lunch. And then 9
Kitty [74]

Answer:

5 hours

Step-by-step explanation:

First, add the miles together

Next, divide 65 into the sum of 227.5 and 97.5(which is 325)

8 0
3 years ago
Read 2 more answers
Other questions:
  • Please someone help me with at least two or three or all please guys I need help
    9·2 answers
  • Mr.Williams physical education class lasts 7/8 hour if instruciton is 1/5 how many minutes are not spent on instruction?
    13·2 answers
  • The vertex form of the equation of a parabola is y = (x - 3)2 + 36.
    8·1 answer
  • Sarah works at a zoo.
    9·2 answers
  • What’s the solution of 2 plus 2
    10·2 answers
  • a hot air balloon is at an altitude of 240 feet. the balloon descends at 30 feet per minute. what equation gives the altitude y,
    15·1 answer
  • Madison has set up a lemonade stand outside her house and sells small cups and large cups of lemonade. Each small cup holds 12 o
    10·2 answers
  • Sort the following numbers from least to greatest.<br> 18.5635, 18 13/16, 18.3125
    11·2 answers
  • The time it takes to process phone orders in a small florist/gift shop is normally distributed with a mean of 6 minutes and a st
    13·1 answer
  • True or False:
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!