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Anit [1.1K]
3 years ago
7

A class party was attended by 80% of the students. If there are 60 students in the class, how many attended the party?​

Mathematics
2 answers:
jonny [76]3 years ago
6 0

Answer: 48

Step-by-step explanation: 80% of 60 is 48 students

Gwar [14]3 years ago
3 0

Answer:

48 students

Step-by-step explanation:

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A box contains 5 red balls, 7 green balls, and 6 yellow balls. In how many ways can 6 balls be chosen if there should be 2 balls
Nostrana [21]

Answer:

12 balls

Step-by-step explanation:

take 3 red balls ,5 green balls and 4 yellow balls that 12 balls = 6 balls in bag

5 0
2 years ago
Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?
BabaBlast [244]

Complete question :

The 100m dah times in the girl's track meet were normally distributed with a mean of 13 seconds and a standard deviation of 0.3 seconds.

Lana finished the race in 13.2 seconds . If 84 other girls ran in the event, approximately how many runners did she beat?

Answer:

21 runners

Step-by-step explanation:

Mean, μ = 13 seconds

Standard deviation, σ = 0.3

Lana's race time = 13.2

We find the proportion of runners who had race time above 13.2 ;

Proportion of who had race tune above 13.2

P(x > 13.2)

Obtain the Zscore

Zscore = (x - μ) / σ

Z = (13.2 - 13) / 0.3

Zscore = 0.2 / 0.3 = 0.6667

P(Z > 0.6667) = 0.25239 (Z probability calculator)

This is about 0.25239 * 100 = 25.24% = 25% (nearest percent)

Hence, Number of runners Lana beat = 25% of total runners ;

0.25 * 84 = 21

Hence, Lana beat about 21 runners

6 0
3 years ago
How do I find the perimeter of this ?
gavmur [86]

Answer:

26 is the perimeter

Step-by-step explanation:

you add all of the side numbers just like this:

9+5+12= 26 :)

     Hope this helped :D

3 0
3 years ago
What is 0.572 divide by 4
Daniel [21]

Answer:

0.143

Step-by-step explanation:

Please mark me as Brainliest if you are satisfied with the answer.

7 0
3 years ago
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