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slega [8]
3 years ago
10

Diego wondered how far sixth-grade students could throw a ball. He decided to collect data to find out. He asked 10 friends to t

hrow a ball as far as they could and measured the distance from the starting line to where the ball landed. The table shows the distances he recorded in feet.
40 76 40 63 47 57 49 55 50 53
Find the median and IQR of the data set.
On a later day, he asked the same group of 10 friends to throw a ball again and collected another set of data. The median of the second data set is 49 feet, and the IQR is 6 feet.
Did the 10 friends, as a group, perform better (or throw farther) in the second round compared to the first round? Explain how you know.
Were the distances in the second data set more variable or less variable compared to those in the first round? Explain how you know.
Mathematics
1 answer:
Oksana_A [137]3 years ago
7 0

Answer:

cheeks

Step-by-step explanation:

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How many integers less than 50 have exactly 2 distinct prime factors?
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1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47

So 16 integers.

6 0
3 years ago
An investor invested a total of $2500 in two mutual funds. One fund earned a 5% profit while the other earned a 3% profit. If th
7nadin3 [17]

Answer:

$500 and $2000

Step-by-step explanation:

Let x represent the total investment = $2500

also, this total is split into two different funds

Lets represent these funds as a and b, such that fund a yields a profit of 3% and fund b yield a profit of 5%

So,

a + b = x

a + b =  2500   ......eq 1

Profit from each fund gives;

0.03 a + 0.05b = 115     ....eq 2

Solve simultaneously using substitution method

From eq 1;

b = 2500 - a

Slot in this value in eq 2

0.03a + 0.05 (2500 - a) = 115

expand

0.03a + 125 - 0.05a = 115

collect like terms

0.03a - 0.05a = 115 - 125

-0.02a = -10

Divide both sides by -0.02

a =  $500

Put this value of a in eq 1

500 + b =  2500

Subtract 500 from both sides

b = 2500 - 500

b = $2000

3 0
3 years ago
Amelia receives two dozens roses for her birthday. 18 of the roses are pink what percent of the roses are pink
ollegr [7]

18/24 = pink roses... 75% of the roses are pink.

4 0
3 years ago
A CD with a diameter of 120 millimeters rotates a rate of 45 revolutions per minute. Find the linear speed of the CD in millimet
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9514 1404 393

Answer:

  • 16,965 mm/min
  • 90π ≈ 282.7 radians/min

Step-by-step explanation:

The circumference of the CD is ...

  C = πd

  C = π(120 mm) ≈ 376.99 mm

This is the distance a point on the edge of the CD will travel when making one revolution. It will travel 45 times this far when making 45 revolutions:

  (376.99 mm/rev)(45 rev/min) ≈ 16,965 mm/min

__

There are 2π radians in each revolution, so the angular speed is ...

  (2π rad/rev)(45 rev/min) = 90π rad/min ≈ 282.7 rad/min

6 0
3 years ago
What is 10(n−2p+2) because i dont know the answer
Zigmanuir [339]

10n - 20p + 20

could i get a heart and branliest

6 0
3 years ago
Read 2 more answers
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