MATHEMATICS MIDDLE SCHOOL

I need to know what is 31×25

Answers

Answer 1
Answer:

Hi there!

Answer:

=775

Step-by-step explanation:

multiply by the numbers. product its going to be multiply by the numbers, fractions, factors, and multiples.

31*25=775

25*31=775

Hope this helps!

-Charlie

Have a great day!

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C. Girls To Total Number Of People Attending

Answers

Answer:

19:27

4:23

1:2

Step-by-step explanation:
these are the ratios in simplest form due to my calculations
19:27

4:23

1:2

Start at 1 create a pattern that multiplies each number by 2. stop when you have 5 numbers

Answers

one answer i think could be 1, 2, 4, 8, 16 if not then idk what you are asking.

Is the first number divisible by the second 790 by 2

Answers

Yes, 790 is divisible by 2. The answer is 395

Can i please get some help i will give all my points

Answers

division by zero is not allowed in math because a that fraction is -5 parts out of 0  total parts


if you tried to divide by zero and tried to check by multiplying it out so for example
5/10=2
5=10 times 1/2

5/0=0
5=0 times (it is imposible because anything times 0 is 0)
so the answer is C

Answer:

divide by zero is not allowed in math because that fraction is -5 parts out of 0  total parts.

if you tried to divide by zero and tried to check by multiplying it out, for example

5/10=2

5=10 times 1/2

5/0=0

5=0 times (it is impossible because anything times 0 is 0)

so the answer is C

Step-by-step explanation:

i hope this helps.

What quadrilateral has one pair of parallel sides?​

Answers

Answer: Trapezoid

Step-by-step explanation:

A trapezoid is a quadrilateral with one pair of parallel sides.

A parallelogram has two pairs of parallel sides

Complete the chart to find the mean,variance,and standard deviation. 45 340 400 825

Answers

Answer:

A. Mean =  402.5

B. Variance = 77,556.25

C. Standard Deviation =  278.49

Step-by-step explanation:

Let's calculate the mean, variance and standard deviation of the set of numbers given:

A. Mean = (45 + 340 + 400 + 825)/4 = 1,610/4 = 402.5

B. Variance [(45 - 402.5)² + (340 - 402.5)² + (400 - 402.5)² + (825 - 402.5)²]/4 =  [(127,806.25 + 3,906.25 +6.25 + 178,506.25/4 =77,556.25

C. Standard Deviation = √Variance = √77,556.25 = 278.49

Answer:

1. 45⠀= -357.5⠀= 127,806.3⠀mean = 402.5

2. 340⠀= -62.5⠀ = 3,906.3⠀variance = 77,556.3

3. 400⠀= -2.5⠀= 6.3⠀deviation = 278.5

4. 825⠀= 422.5⠀= 178, 506⠀n = 4

Σ X = 1,610⠀X = 402.5⠀Σ (X - X)2 = 310,225.2

Step-by-step explanation:

:)
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