MATHEMATICS MIDDLE SCHOOL

Is 21,408 divisible by 2yes or no

is 21,408 divisible by 5
yes ir no

is 21,408 divisible by 10
yes or no

Answers

Answer 1
Answer: First (yes)

Second (no)

Thrid (no)
Answer 2
Answer:

A number is divisible by 2 if the last digit is: 0,2,4,6,8

A number is divisible by 3 if the sum of its digits are divisible by 3.

A number is divisible by 4 if the last two digits are divisible by 4.

A number is divisible by 5 if the last digit is 0 or 5.

A number is divisible by 6 if the number is divisible by both 2 and 3.

A number is divisible by 8 if the last three digits are divisible by 8.

A number is divisible by 9 if the sum of its digits is divisible by 9.

A number is divisible by 10 is the last digit is 0.

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How are four numbers 18,24,16, and 40 alike?

Answers

they are all even numbers and divisible by 2
They are all even numbers.

What is the difference between a parallelogram and a rhombus

Answers

 A parallelogram is a polygon with two sets of opposite, parallel sides.
A rhombus is a type of parallelogram with four congruent sides and angles but no right angles. 

So, all rhombuses are parallelograms, but not all parallelograms are rhombuses.
a parallelogram has parallel lines.

Of the 2223 people on titanic, only 706 reached New York. What percent of people reached New York?

Answers

For this, we can first find the decimal value by dividing 2223 from 706. Therefore, if we do 706/2223, we get .31759. Do find the percentage, simply multiply by 100. Now, we have 31.759% Therefore, 31.759% of the people on the Titanic reached New York.

Answer:
31.759%

Hope this helped!! :D

Five pounds of birdseed is used to fill 4 identical bird feeders. What fraction of birdseed will be needed to fill each feeder.

Answers

The answer is 1/4 pund because 4 bird feeders
                                                                    The answer is 1 1/4

Help me plzzzzzzz ??????

Answers

I think the answer is C
12-5=7
7x-20
it's A because
5x - 12x = 7x
and the 20 you leave it in

Please help urgent plzz1.find the mean of the data set excluding multiple of number 10 between 1 to 50?

2.find the mean of the data set excluding multiple of number 3 between 1 to 10?

Answers

This can be done quickly using Excel or a scientific calculator. For problem no. 1, the data that are multiples of 10 in the set are 10, 20, 30, 40 and 50 and the number of data points in the set are 45 since the  data set is from 1-50 excluding the 5 numbers that are multiples of 10.

Mean=[(sum of all numbers from 1 to 50)-10-20-30-40-50]/[50-5]=25

The second problem is similar. The multiples of 3 here are 3, 6 and 9. There are 10-3 data points.

Mean = [(sum of numbers from 1-10)-3-6-9)]/[10-3]=5.2857
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