MATHEMATICS MIDDLE SCHOOL

What is 28- 12.5% decrease???

Answers

Answer 1
Answer: ok so I assume
28 and decreased by 12.5%

percent means partst out of 100 so
12.5%=12.5/100=0.125
first find 12.5% of 28 then subtract
0.125 times 28=3.5
decrease
28-3.5=24.5

answer is 24.5

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What is nine hundred eighty million in scientific notation

Answers

nine hundred eighty million in scientific notation is shown as 9.8*10^8.Scientific notation is the way that scientists easily handle very large numbers or very small numbers.

Complete the calculations below to write equivalent fractions, with a common denominator. 4/5 and 5/6

Answers

I think you're saying that you want equivalent fractions for  4/5  and  5/6 ,
and the equivalent fractions should both have the same denominator.  OK.

Have you learned "least common denominator" yet ?
Or maybe "least common multiple" ?

It's the smallest number that  5  and  6  both go into with no remainder.

I'm not going to try to explain the whole general method for finding it.
That confuse both of us, you and me.

In this case, I'll just tell you that the smallest common denominator here
is  30 .  Now you have to find the two numerators, so that the new
fractions will really be equivalent to the old ones.

-- Write  4/5  as something with a denominator of  30 .

       4/5  =  ? / 30 .

    What is the '5' multiplied by to get the '30' ?
     It's multiplied by 6 to get 30 .
     So multiply the 4 by the same 6.      The equivalent fraction is  24/30 .

-- Write  5/6  as something with a denominator of  30 .

       5/6  =  ? / 30 .

     What is the '6' multiplied by to get the '30' ?
     It's multiplied by 5 to get 30 .
     So multiply the 5 by the same 6.      The equivalent fraction is  25/30 .

The sum of 4 consecutive odd numbers is 40, what is the second number in this sequence

Answers

Answer: Nine

Step-by-step explanation:

7+9+11+13 = 40

They are all consecutive odd numbers, and add up to 40. 7 +13 is twenty, and 9+11 is also twenty, making forty. The second number in this sequence is 9

Order the following from least to greatest -8,-19,0,1/2,1/4

Answers

Obviously 0, 1/4 and 1/2 are bigger than the previous 2 numbers.  We start with -19 because that is the smallest number there is in this group.  The next one we go with is -8.  We chose these two because they are negative.  0, 1/4 and 1/2 are next. 1/4=0.25 1/2=0.5

So the answer would be -19, -8, 0, 1/4, 1/2

Compare the values of the underlined digits 6,300 and 530 with three being the underlined digit.

Answers

The value of 3 in 6300 is ten times the value of 3 in 530

Further Explanation  

Place value and total value  

  • Place value refers to the value represented by a digit in a number based of its position in the number. Place values can be ones, tens, hundreds, thousands, etc  

For example;

In the number; 13,548, the place value of the digits in the number are;

Ones -8

Tens - 4

Hundreds - 5

Thousands - 3

Ten Thousands – 1

Total value  

  • Total value is given as the product of the digit and its place value.
  • For example; in the number, 13,548.  
  • Total value of digits 1, 3, 5, 4, and 8 in the number 13,548 will be;

1 x 10,000 = 10,000

3 x 1000    = 3,000

5 x 100      = 500

4 x 10        = 40  

8 x 1          = 8

The sum of the total values of digits in a number will be equivalent to the value of that number.

In the question.

Comparing the value of 3 in 6,300 and 530

The value of 3 in 6,300 is 300 and  

The value of 3 in 530 is 30

Therefore; the value of 3 in 6300 is ten times the value of 3 in 530

Keywords: Place value, total value

Learn more about;

Level: Middle school

Subject: Mathematics  

Topic: Place value and total value  

Comparing the values of 3 in each of 6,300 and 530, we will have:

3 in 6300 is 3 hundreds while 3 in 530 is 3 tens

How to solve number place value?

Place value is defined as the value of each digit in a number. For example, the 5 in 853 represents 5 tens, or 50; however, the 5 in 5,003 represents 5 thousands, or 5,000.

We want to compare the values of 3 in each of the numbers 6,300 and 530.

Thus, we can say that:

3 in 6300 is called 3 hundreds while 3 in 30 is called 3 tens or 30

Read more about Number place value at: brainly.com/question/24997908

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Round 287.63 to the nearest whole number.

Answers

the answer would be 288 to the nearest whole number
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