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natima [27]
3 years ago
9

Yan has already finished 3/5 of the 45 math problems he was assigned today. Each math problem took him 1 4/5 of a minute to comp

lete. If this pace continues, how much more time, to the nearest minute, will the rest of the problems take him to finish? 18 min
Mathematics
1 answer:
Butoxors [25]3 years ago
7 0

Answer:


Step-by-step explanation: Convert the fractions to make all the denomitors /45 then add them together then you have your answer


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Please help! I’ve been struggling trying to figure out how to start with these two problems.
Vinil7 [7]

Answer:

Step-by-step explanation:

7 0
1 year ago
The amount of time that a customer spends waiting at an airport check-in counter is a random variable with mean 8.0 minutes and
strojnjashka [21]

Answer:

P ( 5 < X < 10 ) = 1

Step-by-step explanation:

Given:-

- Sample size n = 49

- The sample mean u = 8.0 mins

- The sample standard deviation s = 1.3 mins

Find:-

Find the probability that the average time waiting in line for these customers is between 5 and 10 minutes.

Solution:-

- We will assume that the random variable follows a normal distribution with, then its given that the sample also exhibits normality. The population distribution can be expressed as:

                                   X ~ N ( u , s /√n )

Where

                            s /√n = 1.3 / √49 = 0.2143

- The required probability is P ( 5 < X < 10 ) minutes. The standardized values are:

                        P ( 5 < X < 10 ) = P (    (5 - 8) / 0.2143 <  Z  <  (10-8) / 0.2143   )

                                                 = P ( -14.93 < Z < 8.4 )

- Using standard Z-table we have:

                        P ( 5 < X < 10 ) = P ( -14.93 < Z < 8.4 ) = 1        

7 0
3 years ago
What’s the fraction of 65% in its simplest form
patriot [66]

Answer:

13/20

Step-by-step explanation:

65%=65/100

65/100=13/20

5 0
3 years ago
Read 2 more answers
What is the area of a rectangle that is 2/5 inches long and 1/2 inches wide?
Sladkaya [172]

Answer:

c

Step-by-step explanation:

1/2x2/5=2/10

multiply both denominators by each other, then with numerator.

6 0
3 years ago
Read 2 more answers
Solve 2 2 2 + + (22 − 2) = 0, ≠ 0, ≥ 0
TiliK225 [7]

Answer:

26

Step-by-step explanation:

add 222 and 20

3 0
3 years ago
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