MATHEMATICS HIGH SCHOOL

What is the prime numbers between 40 to 60

Answers

Answer 1

Answer:

Answer:

The prime numbers between 40 and 60 are 41, 43, 47, 53, and 59

Step-by-step explanation:

A prime number is a number that is only divisible by 1 and the number itself

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Which fraction can be represented with a repeating decimal?3/20
12/5
7/16
4/11

Answers

Answer:

Thanks for asking!

Step-by-step explanation:

The answer would be 4/11. 3/20 in decimal form is 0.15. 12/5 is 2.4. 7/16 is 0.4375. 4/11 is 0.36 repeating.

Answer:

4/11

Step-by-step explanation:

=0.363636....

Josh used a standard deck of 52 cards to conduct an experiment. Half of the cards in the deck were red. The other half were black. Josh predicted that he would choose a red card in 4 out of 8 trials. When he conducted the experiment, he actually chose a red card 6 out of 8 times. Which explains the most likely reason for the discrepancy between Josh’s predicted and actual results?He incorrectly predicted the number of times he would choose a red card.
He incorrectly determined the actual number of times he chose a red card.
He used too few trials for the sample space.
He used too many trials for the sample space.

Answers

Step-by-step explanation:

He used too few trials for the sample space.

If he conducts a lot more trials, his results will be closer to 50% red

There are 46 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random variable with an expected value of 5 min and a standard deviation of 4 min. (Round your answers to four decimal places.)(a) If grading times are independent and the instructor begins grading at 6:50 P.M. and grades continuously, what is the (approximate) probability that he is through grading before the 11:00 P.M. TV news begins?(b) If the sports report begins at 11:10, what is the probability that he misses part of the report if he waits until grading is done before turning on the TV?

Answers

Answer:

a) P ( T < 250 mins ) = 0.7695

b) P ( T > 260 mins ) = 0.1344

Step-by-step explanation:

- The RV from a sample has the following parameters that are mean = 5 mins, and standard deviation s = 4 mins.

- The entire population has n = 46 students.

- We will first compute the population mean u and population standard deviation σ as follows:

u = n*mean

u = 46*5 = 230 mins

σ = sqt ( n ) * s

σ = sqt ( 46 ) * 4

σ = 27.129 mins

- Approximating that the time taken T to grade the population of entire class follows a normal distribution with parameters u and σ as follows:

T~ N ( 230 , 27.129 )

Find:

- If grading times are independent and the instructor begins grading at 6:50 P.M. and grades continuously, what is the (approximate) probability that he is through grading before the 11:00 P.M. TV news begins?

- The total time till 6:50 PM to 11:00 PM is ( 4 hr and 10 mins ) = 250 mins.

- We will compute the Z-value as follows:

Z = ( 250 - 230 ) / 27.129

Z = 0.7372

- Then use the Z-Tables and determine the probability:

P ( T < 250 mins ) = P ( Z < 0.7372 )

P ( T < 250 mins ) = 0.7695

Find:

- If the sports report begins at 11:10, what is the probability that he misses part of the report if he waits until grading is done before turning on the TV?

- For the teacher to miss the sports report he must take more time than 6:50 PM to 11:10 P.M.

- The total time till 6:50 PM to 11:10 PM is ( 4 hr and 20 mins ) = 260 mins.

- We will compute the Z-value as follows:

Z = ( 260 - 230 ) / 27.129

Z = 1.10582

- Then use the Z-Tables and determine the probability:

P ( T > 260 mins ) = P ( Z > 1.10582 )

P ( T > 260 mins ) = 0.1344

Write the slope-intercept form of the line with a slope of 2 and a y-intercept of -4. Include your work in your final answer. Type your answer in the box provided or use the upload option to submit your solution.

Answers

y=mx+b m=slope b=y intercept
y=2x-4

y = 2x -3
I think this is right

Write the following series in sigma notation.
7+11+15+19+23

Answers

This is the answer this is the answer

Lowell has a credit card that uses the adjusted balance method. For the first10 days of one of his 30-day billing cycles, his balance was $1360. He then
made a purchase for $470, so his balance jumped to $1830, and it remained
that amount for the next 10 days. Lowell then made a payment of $740, so
his balance for the last 10 days of the billing cycle was $1090. If his credit
card's APR is 28%, which of these expressions could be used to calculate the
amount Lowell was charged in interest for the billing cycle?

Answers

Answer: (0.28/365 •30)(620)

Step-by-step explanation:

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