MATHEMATICS MIDDLE SCHOOL

Is 1/3 greater than 2/7

Answers

Answer 1
Answer: 1/3 is greater  than 2/7 because   if  you put them the same denominator in  this case it would be 21 you would multiply 1/3 by 7 and 2/7 by 3 so 1/3 would be 7/21 and 2/7 would be 6/21 so  yes 1/3 is   greater than 2/7

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How can I solve this system of linear equation by substitution 3x+y=11 and -2x+y=1

Answers

We can answer this question by solving each equation for one variable, and then substituting.

3x + y = 11   Given
y = -3x + 11   Subtract 3x from both sides

This equation is now solved for y. Now, let's do the other equation. Make sure to solve it for the same variable.

-2x + y = 1   Given
y = 2x + 1   Add 2x to both sides

Now, let's set both equations equal to each other, since they both equal y.

2x + 1 = -3x + 11   Set both equations equal to each other
1 = -5x + 11   Subtract 2x from both sides
-10 = -5x   Subtract 11 from both sides
2 = x   Divide both sides by -5

Now, let's substitute x in for one of the equations we found earlier, so that we can find y.

y = 2x + 1   Given
y = (2)(2) + 1   Substitute the x-value, 2
y = 4 + 1   Multiply
y = 5   Add

So, x = 2 and y = 5.

Hope this helps!
First will make Equation take on the form of y = mx + b. I've cchosen the second Equation:

y = 2x + 1


Now substitute this equation in for y into the other equation and solve:

3x+y = 11
3x+ (2x + 1)=11
5x + 1 = 11
5x = 11 - 1
5x/5= 10/5
x = 2 


You can now plug this x-value back into either equation, and solve for y:

y = 2(x) + 1
y = 2(2) + 1
y = 5

What numbers go into 51 evenly

Answers

3 and 17 go into 51 evenly.
if you multiply 3 and 17 you get 51.

PLEASE HELP ME

rename 8 ten thousands 4 hundreds

Answers

80,400 or eighty thousand four hundred
80,400 or eight ten four hundred

Christy rode her bike 60 miles and 5 hours. What was the average number of minutes it took to ride each mile?

Answers

12 mins each 
60 divided by 5 equals 12

explain how multiplying a whole number and a decimal is similar to and different from multiplying whole numbers

Answers

Similar :

Ignore the decimal point and multiply the numbers

Difference :

Count the decimal places and put the decimal point in the final answer

Given :

multiplying a whole number and a decimal

similar :

When we multiply a whole number by a decimal then we ignore the decimal first and the we multiply as if we multiply the whole numbers .

So, its similar like multiplying whole numbers

Different:

After multiplying the numbers as if we multiply like whole numbers , we move the number of decimal places from the left  that we have in the decimal number and write the final answer with decimal point .

Learn more :  brainly.com/question/2163455

Explanation:

The process is very similar. We multiply the digits the same was as we would multiply whole numbers. We start at the last place value and multiply, working our way left with each line. At the end of the process, we add the lines together.

The difference comes with the decimal point. After we are finished multiplying, we count the number of digits behind a decimal (total) in the problem. This is how many digits will be behind a decimal in the answer.

Kareem saves his coins in a jar. 30% of the coins are pennies. if there are 24 pennies in the jar, how many coins does Kareem have?

Answers

30%=30/100=3/10

3/10 of all=pennies=24
divide by 3
1/10 of all=8
times 10
10/10 of all=80
80 coins she has
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