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3 years ago

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

1 answer:

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.

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Help

alisha [4.7K]

Answer:

a. $x^{2} + 3y^{3}$

b. $3y^{3} -6$

c. $5x -3$

d. -6t - 5

Step-by-step explanation:

When a number has the same variable as another, you can add or subtract them

So for the first one, you can do

$5x^{2} -4x^{2} = 1x^{2} = x^{2}$

(But don't forget the $3y^{3}$ !)

So it is:

$x^{2} + 3y^{3}$

Continue this process for the rest of them

7 0

2 years ago

24 pointss helpssss..tysmmm

morpeh [17]

Answer:

Step-by-step explanation:

7 0

3 years ago

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A rectangular garden has a length of 5a + 17 feet and a width of 4a feet. Which expression represents the area of the garden in

harina [27]

Answer:

(5a + 17) x 4a

Step-by-step explanation:

4 0

3 years ago

Perform the indicated operation. <br><br> 9/32 - 1/16

Mashcka [7]

First find a common denominator

1/16(2/2) = 2/32

9/32 - 2/32 = 7/32

7/32 is your answer

hope this helps

5 0

3 years ago

Read 2 more answers

the sum of three decimal numbers is 6 exactly one of the numbers is less than 1 what could the numbers be

sleet_krkn [62]

The 3 numbers could be 0.5, 1.1 and 4.4.

In the list above, there is only 1 number less than 1. It is 0.5.
The other 2 numbers are larger than 1.

If you add up the 3 numbers you will have exactly 6.

0.5 + 1.1 + 4.4 = 6

8 0

3 years ago