MATHEMATICS COLLEGE

Easy pointsBefore you answer this question try and rotate your foot clockwise and write the number six. Hard right.

Math question now.
When I am 6 my brother is half my age. How old will my brother be when I am 70?

Answers

Answer 1
Answer:

Answer:

67

Step-by-step explanation:

Your brother is three years younger than you, so when you're 70, he'll be three years younger, 67.

~theLocoCoco
Answer 2
Answer:

Answer:

35 years old

Step-by-step explanation:

Since your brother is half your age, that means it should be exact. 70 is not a number than would have an even split, so you would have to have either an odd number such as 5. 40 plus 40 is 80, which is to high. 30 plus 30 is 60, too low. 35 plus 35 is 70 exact. Hope this helped! Also, I dont know if this was trick question, either way, he should be half. So if you were 10, he would be 5. If you were 18, he would be 9.

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The ratio of the number of boys to the number of girls in the math club is 4 to 3.There are 36 girls in the math club. How many boys are in the math club?

Answers

Answer:

mathhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Step-by-step explanation:

mathhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Answer:

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Step-by-step explanation:

Q # 19 The data below shows the. number of hours a week on average group of students spend volunteering for community service project.What is a cumulative frequency table that represents the data.4 5 10 21 6 2 9 8 12 15 8 14 6 4 6 11 3 2 9 16 22 23

Answers

If those two are your only choices then the answer is none of the above. 

Attached is a cumulative frequency table for your data.

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Professors often attempt to determine if the submissions by the students are genuine or copied off the web sources. The program that performs this task is only 95 % accurate in correctly identifying a genuine submission and 80% accurate in correctly identifying copies. Based on the past statistics, 15% of the student turned in copied work. If a work is identified as a copy by the program, what is the probability that it is indeed a sample of copied work.

Answers

Answer:

0.7385 = 73.85% probability that it is indeed a sample of copied work.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = (P(A \cap B))/(P(A))

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Identified as a copy

Event B: Is a copy

Probability of being identified as a copy:

80% of 15%(copy)

100 - 95 = 5% of 100 - 15 = 85%(not a copy). So

P(A) = 0.8*0.15 + 0.05*0.85 = 0.1625

Probability of being identified as a copy and being a copy.

80% of 15%. So

P(A \cap B) = 0.8*0.15 = 0.12

What is the probability that it is indeed a sample of copied work?

P(B|A) = (P(A \cap B))/(P(A)) = (0.12)/(0.1625) = 0.7385

0.7385 = 73.85% probability that it is indeed a sample of copied work.

Travis traveled 320 miles in 5 hours. what is his unit rate of speed in miles per hour?

Answers

The answer to this question I am pretty sure is 64 mph... 
64 mph im pretty sure

From a group of 12 students, we want to select a random sample of 4 students to serve on a university committee. How many different random samples of 4 students can be selected?

Answers

Answer:

Step-by-step explanation:

3

Three-fourths of a number is at least -18​

Answers

Answer:

x ≥ - 24

Step-by-step explanation:

Let's solve this with an equal sign and then decide how to handle the at least part.

3/4 x = -18              Multiply by 4

3/4 * 4 x = -18*4     Cancel the left, multiply the right.

3x = -72                  Divide by 3

x ≥ -24

You need  the greater than to indicate that 3/4 of a number can give something larger than - 18.

You need the equal sign to fulfill at least.

At least, in this question means "get larger."

so x > - 24

Answer:

3/4*X < -18

( put a line underneath the less than sign ) ( Astric's means multiplication )

Step-by-step explanation:

Hope this helped, Have a Wonderful Day!!
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