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sertanlavr [38]
3 years ago
14

Ursula and her friends are playing hoop rolling. Ursula rolls a large hoop along the ground. The hoop rotates through an angle o

f 3/2 times pi radians in 1 second. How many revolutioins does the hoop make in one minute?

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
4 0
1 revolution = 360 degrees
3/2pi = 1 second
1 revolution = 2pi radius
3/2pi (360/2pi)= 3/2pi (180/pi)=270 degree sec.

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Select the pairs of ratios that form a true proportion. Choose all that apply A 3: 6 and 5:10 B 4/12 and 6/18 C 20/5 and 10/3 D
Naddika [18.5K]

Answer:

The only grouping that is a true proportion is B.

Step-by-step explanation:

To tell if two are proportional, simply multiply the numerator from the first by the denominator of the second. Then multiply the denominator from the first and the numerator for the second. If the two products are the same, then it is proportional.

B) 4/12 = 6/18

4*18 = 12 * 6

72 = 72

5 0
3 years ago
Find the length of LM if L is the midpoint of NM. NL = 3x + 1, LM = 8x - 24.
SashulF [63]

Answer:

LM = 16

Step-by-step explanation:

From the question given:

L is the midpoint of NM

NL = 3x + 1

LM = 8x - 24

LM =?

Next, we shall determine the value of x.

This can be obtained as follow:

Since L is the midpoint of NM, it means that NL and LM are equal i.e

NL = LM

Thus, we can obtain the value of x as follow:

NL = 3x + 1

LM = 8x - 24

NL = LM

3x + 1 = 8x - 24

Collect like terms

3x - 8x = - 24 - 1

-5x = - 25

Divide both side by - 5

x = -25/-5

x = 5

Finally, we shall determine the length of LM as follow:

LM = 8x - 24

x = 5

LM = 8(5) - 24

LM = 40 - 24

LM = 16

Therefore, the length of LM is 16

8 0
3 years ago
The table and equation below show the proportional relationship between time, in seconds, x, and distance traveled, in feet, y,
yarga [219]

Answer:

Step-by-step explanation:

8 0
2 years ago
The price of Phillips favorite candy has been reduced by 15 cent per piece. Philips buys 14 pieces and spend $3.22 what is the r
Tamiku [17]
Well, if we divide 3.22 by 14 we get 0.23
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8 0
3 years ago
PLEASE HELP!! (Give reasonable answer)
gladu [14]

Answer: B

Step-by-step explanation: You just multiplying 25 with 10 and w which can be simplified as 24(w+10) and adding with the 13.5 x 10 and 13.5 x w, which can be simplified as 13.5(10+w)

7 0
3 years ago
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