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
Mandarinka [93]
3 years ago
9

(5) Rhea ran 6 laps on a track. Each lap is 200 yards. Rhea's average speed for

Mathematics
1 answer:
sashaice [31]3 years ago
7 0

Answer:

72 yd / min

Step-by-step explanation:

The first thing is to fully calculate the distance traveled, each lap is 200 yards and how 6 laps would be:

200 * 6 = 1200

Now, let's divide the race into how the statement tells us:

1200 * 2/3 = 800

1200 * 1/3 = 400

That is, in the first 800 yards it goes to 80 yd / min and then in the remaining 400 yards it goes to 60 yd / min, let's calculate the time Rhea lasted:

800/80 = 10 min

400/60 = 6,667 min

Which means that in total it would be:

10 + 6,667 = 16,667

In other words, Rhea took 16,667 minutes to travel 1,200 yards, so the speed would be:

1200 / 16,667 = 72

Therefore the average Rhea speed was 72 yd / min

You might be interested in
PLEASE HELP ASAP<br> How do you find the total for a purchase if there is sales tax?
qaws [65]

Answer:

Conver the sales tax to a decimal and ad it to 1, then multiple that total to the price of the item. Please mark as breinlest

7 0
2 years ago
Read 2 more answers
How many elements must a set have if the number of proper subsets of the set is one half of the total number of subsets of the​
lora16 [44]
The set  X = { x , {x} }  would, I think,  fit the Bill
So its 2 elements
6 0
3 years ago
Find all the zeroes of the equation(with simple steps).
uysha [10]

<u>Answer-</u>

<em>The zeros are, 5,\ -5,\ 4i,\ -4i</em>

<u>Solution-</u>

\Rightarrow -3x^4+27x^2+1200=0

\Rightarrow -3(x^2)^2+27(x^2)+1200=0

Here,

a = -3, b = 27, c = 1200

So,

x^2=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

=\dfrac{-27\pm \sqrt{-27^2-4\cdot (-3)\cdot 1200}}{2\cdot (-3)}

=\dfrac{-27\pm \sqrt{729+14400}}{-6}

=\dfrac{-27\pm 123}{-6}

=\dfrac{-27+123}{-6},\ \dfrac{-27- 123}{-6}

=\dfrac{96}{-6},\ \dfrac{-150}{-6}

=-16,\ 25

So,

\Rightarrow x^2=25,\ -16

\Rightarrow x=\sqrt{25},\ \sqrt{-16}

\Rightarrow x=5,\ -5,\ 4i,\ -4i

8 0
3 years ago
What is the exact volume of the cylinder?
kenny6666 [7]
V = pi r^2 * h
V = pi * 9 * 6
V = 54 pi in^3
6 0
3 years ago
Read 2 more answers
Im bad at this help pls
Alexandra [31]

Answer:

D

Step-by-step explanation:

because if you unfold the left corner at the top it just becomes a regular rectangle, 15 by 10. 15 x 2 plus 10 x 2 = 54. and 54 x 1.19 is $64.26 therefor it is D.

I actually did the math this time i promise.

6 0
2 years ago
Read 2 more answers
Other questions:
  • I need to find Domain and Range but how do I know when to use brackets or parentheses
    14·1 answer
  • Find the 91st term of the arithmetic sequence 28, 8, -12, ...
    15·1 answer
  • Find the value of x. (3x-4) (7x+4)
    9·2 answers
  • What is the formula to a trapezoid
    10·1 answer
  • How to find an area of this figure?:<br><br><br><br> thanks!
    11·2 answers
  • I need help on this.
    14·2 answers
  • On the planet Jupiter, a ball this thrown upward at a velocity at 10m/s. It's height, h(t) meters after t seconds is given by th
    5·1 answer
  • Michael can bike 2 miles in 12 minutes how long will it take him to bike 7 miles
    11·1 answer
  • Do the points P (-1, 6), Q (3, 7) and R (3, -5) form a right triangle? <br> ( show your work )
    12·1 answer
  • Calculate the area of the red triangle to find the area of the garden. Show your work
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!