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pogonyaev
3 years ago
12

Please answer one of these questions only if you know the answer!! 30 points and brainliest!

Mathematics
1 answer:
viktelen [127]3 years ago
3 0

16. if the student is more than 5 it should be sample but is there is only five student it is population

15. no, because you arent take random sample, you know all of them will answer yes.

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Find a number such that 12% if the number is 60
Lelechka [254]
Use a proportion to answer the question 

60 = 100%
 x  =    12 

12 x 60 = 720 
720 / 100 = 7.2 

7.2 is 12% of 60, which is your answer<span />
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Sum of 5 time z and 4 divided by 2
Tomtit [17]

Answer:

5z+4/2

Step-by-step explanation:

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Cosines someone please help me. Include an explanation and a clear answer
Readme [11.4K]

The formula for the law of cosines is:

a^2 = b^2 + c^2 - 2*b*c*cos(angle)

In this triangle b = 7, c = 8 and angle = 32.

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7 0
3 years ago
Read 2 more answers
Find the solution to each problem. Show all of your work.
Katen [24]

1. 1 hour = 60 minutes

We convert 3 hours and 25 minutes to minute : 3 x 60 + 25 = 205 (minutes). Since 205 < 230, it took longer to get home than getting to the beach.

2. (Same convertion)

5 hours and 10 minutes = 5 x 60 + 10 = 310 (minutes)

So, the last day rained longer than the day before it.

3. 1 day = 24 hours.

We convert 3 days to hours : 3 x 24 = 72 (hours)

Since 72 > 68, Wendy's family lost their power longer than their neighbors.

4. 1 minute = 60 seconds

Convert 2 minutes and 2 seconds to seconds : 2 x 60 + 2 = 122 (seconds)

Since 122 > 121, it means Paul took longer to finish his race, which mean Jeff finished first (Rip Paul)

5.

Question : Bob bought 2 pizzas for him and his friend, Kevin. They both ate 1 pizza. Bob finished his pizza in 6 minutes and 45 seconds. Kevin finished his pizza in 400 seconds. Who finished first?

Solution : Convert 6 minutes and 45 seconds to seconds : 6 x 60 + 45 = 405 (seconds)

Since 405 > 400, Bob took longer to finish his pizza -> Kevin finished first.

6 0
2 years ago
8) There are three pairs of socks of three different types A, B, and C in a drawer. The goal is to pair these socks. If socks ar
tino4ka555 [31]

Answer: 2

I'm really struggling with this concept, hoping you guys could help me out.

The pairs have been separated out and you must take out a pair of socks.

Consider these problems and provide a calculation for each:

Probability of drawing a matching pair if you randomly draw 2 socks?

Probability of drawing a matching pair if you randomly draw 3 socks?

(Repeats up to randomly drawing 5 socks)

For 2 socks I got the following:

40 possible socks * 39 other possible socks = 1560 possible combinations of socks / 2 (to remove duplicate matches) = 780

For each set of socks, there are 8. 8 * 7 (7 other socks to each being matched) = 56 possible combinations in each set of socks / 2 to remove duplicates = 28 possible combinations of socks in each set.

28 / 780 = 0.036 probability of drawing a pair when drawing 2 socks from the drawer.

Step-by-step explanation:

7 0
3 years ago
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