MATHEMATICS MIDDLE SCHOOL

What is the difference of 4,047 and 2,191?

Answers

Answer 1
Answer: answer: 1,856
4,047 - 2,191 = 1,856

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What is the rule: 36 --> 60,  12 --> 20,  6 --> 10,  15 --> 25

Answers

in other words divide by 3 and  multiply by 5
36 to 60 = 22
12 to 20 = 8
6 to 10 = 4
15 to 25 = 10
Hope you get the pattern, if not comment
Happy to Help!

For the graph shown, select the statement that best represents the given system of equations. 3y – x = 2 9y – 3x = 6Help Please Thank You

Answers

You can find that out by first putting two equations in slope-intercept form y=mx+b by solving for y.
3y - x = 2
3y = x+2
y = (1/3)x + 2/3

9y = 3x + 6
y = (3/9)x + 6/9
y = (1/3)x + 2/3

They are the same line as you can see in the final step.
Since the two lines are the same line, (they "coincide") they are coincident.
Coincident means there are an infinite number of solutions, and since they are the same line, there are an infinite number of solutions.

Review (a NBT 6.4 NF3e, MD sa, AGck earned $1,472 during the 4 week
d his summer job. If he earned the
amount each week, how much die
each week?

Answers

The answer is 368 divide 1478 by 4 and you get 368 to check the answer you can multiply 368 by 4 and get 1472
To find out each week, you would need to divide $1,472 by 4 weeks.
$1,472 ÷ 4 = 368

Chetan and his 5 siblings buy a present for their mother on Mother's Day. As the eldest brother, he pays 0.2 of the cost of the present. The rest of the siblings share the balance equally. Each sibling pays $9.50 less than Chetan. What is the cost of the present.

Answers

Let's say that X is what the other 5 siblings pay. X + $9.50 is what Chetan pays. X + $9.50 is 1/5 of the cost of the present. To solve this we have to do 0.8 divided by 5 (the remaining cost split between 5 people) which is 0.16. Now from this we can learn that $9.50 is 0.04 of the cost of the present. A simple way to solve this is do 1.00 divided by 0.04 and then multiply $9.50 by that amount. 1.00 divided by 0.04 is 25 so $9.50 times 25 is $237.5.
The present costs $237.5 
As I read over this I may not be correct, however this is how I solved it as an advanced mathematics grade 8 student.

Chantelle takes out a loan of $3,500 with an APR of 4.25%. She will repay the loan in monthly payments for 6 months. To find the total amount of interest she will pay, Chantelle uses an online calculator. What are the correct numbers she should enter?

Answers

Answer:

Chantelle will pay $73 of interest for a loan of $3,500 with an APR of 4.25%.

Step-by-step explanation:

Since APR is  defined as the anual percentage rate, the amount of interest that Chantelle will pay  can be expressed as:

I=L*(1+APR/100%)^n-L

Where L is the amount of money borrewed  and n the numbers of years. As Chantelle repay the loan in less than a year n is less than 1:

n = 6 months / 12 months = 0.5

Then replacing the calculated value of n, the ARP and the the borrowed money:

I=$3,500*(1+4.25%/100%)^0.5-$3,500

I=$3,500*(1+0.0425)^0.5-$3,500

I=$3,500*1.021-$3,500

I=$3,573-$3,500

I=$73

APR = Annual Percentage Rate

[(3500x0.0425)+3500]/2

The numerator is divided by 2 because 6 months is half of a year. 

Malachy and Paul win some money and share it in the ratio 4:5. Malachy gets £44. How much did Paul get?

Answers

Answer:

I believe the answer is 55.

Step-by-step explanation:

Because if Malachy gets 44 and the ratio is 4:5 it would only make sense if Paul got 55.
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