MATHEMATICS MIDDLE SCHOOL

Which of the following is an expression for “doubling a number N and dividing by 3” ?A)2+n/3
B)2n/3
C)n2/3
D)2/3n

Answers

Answer 1
Answer: 1. Doubling a number means a number times 2, we don’t know that number so it’s considered 2n
1(in short words) n is a variable. N•2 = 2n.
2. Divide 2n by 3. This would mean 2n/3

It could be B or C HOWEVER the most formal way is B.
We always want the coefficient in front of the variable. You will see it in the future. Thanks to the multiplication property of equality, B & C will produce the same number. For example let n= 1

2•1/3= 2/3 ; this is with equation B
1•2/3= 2/3; this is with equation C

If your looking for two answers put B & C
If your looking for one answer put B
If it doesn’t say, then I’d recommend to be B .
Answer 2
Answer:

Answer:

B or C

Step-by-step explanation:

Since the communitive property of multiplication states that A * B = B * A...

2n = n2.

2n is doubling n and /3 is dividing that number by 3.

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How do you close question

How can you use models to find factor

Answers

Yes, it depends on what kind of model

Which angle has its terminal side in the third quadrant?

Answers

Answer:

7π/6.

Step-by-step explanation:

The range in the third quadrant is  π to 3π/2 ( or π to 1.5π) so its not π/3 or 3π/4.

5π/3 = 1.67π so it's not this one.

7π/6 = 1.167π  so it's this one.

The play will be negative 12 degrees tonight, the weatherman predicts it will be 25 degrees warmer by noon tomorrow, what was the temperature be by noon tomorrow?

Answers

the temperature differential is based on the numbers on a line with the negative numbers left of zero and the positive numbers right of zero.

 

Using -12 on the number line, add 25 to it to get the noon temperature tomorrow.

 

Awnser -12 + 25 = 13

 

The temperature tomorrow at noon will be 13 degrees.

 

Questions?

The answer is 13 degrees.

Hope this helps!

Emma is training for a 10 kilometer race. She wants to beat her last 10 kilometer time, which was 1 hour 10 minutes Emmahas already run for 55 minutes. Which inequality can be used to find how much longer she can run and still beat her previous
time? (1 hr = 60 min)
70> -55
70 <-55
70 St+55
70 > I+55

Answers

Answer:

70 > I+55

Step-by-step explanation:

The last inequality expresses better this situations.

Emma wants to beat her last record, which was 70 minutes. So, she needs to run in less than 70 minutes.

However, she already ran 55 minutes, the remaining time would be the variable I, so, the sum of them must be less than 70 minutes. So, there are two options to represent this:

I + 55 < 70 or 70 > I + 55.

Answer:

the answer is 70 greater-than t + 55

Justine is a wedding coordinator. She is selecting the menu options for the reception

Answers

What does she want on the menu

Find the highest common factor (HCF) of 12 and 20.

Answers

The factors of are 12, 6, 4, 3, 2, 1, while those for 20 are 20, 10, 5, 4, 2, 1. The common highest factor for the two numbers is 4.
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