All Answers 355950 Answers

Joel bought 2 notebooks, 3 pencils, and 6 files for $12.70. The cost of 1 pencil and  2 files is 4. What is the cost of 1 notebook?

Let's assume notebook = n, pencils = p, and files = f

2n+3p+6f = $12.70

1p+2f = $4

We know that 1p+2f = 4$ so that means that 2p+4f = 8$ and 3p+6f = 12$.

As you can see 3p+6f = 12$ so we can subtract that from the 2n+3p+6f = $12.70 which we get

2n = $.70

Therefore n = $.35 

Hope this helps! 

b = 1/3 j

j   =     b        + 36         these are given        sub first into second equation

j   =    1/3j     + 36

2/3 j = 36

j = 54 cards

Parallel line has the same slope   m = 3

point slope form     point = 0,3    slope = 3

y-3 = 3 ( x-0)

y = 3x + 3

PE_gravity =   m * g * h

              = 54 * 9.81 * 8     joules

a:  He has 1,000,000-10270=989730

b: The difference is 989730

c: The best strategy is subtraction.

There was not and image on the question just the sentence it was probably a mistake I will see but thank you 

Ok, thank you for telling me. I will solve it immediately.

Is there any image because I need the image in order to solve it.

Thank you

It's wrong :P

There is already an answer/

https://web2.0calc.com/questions/help-asapp_1

Check this link and let me know if it's wrong.

Hope this helps! 

"Joe has some baseball cards, and his brother has 1/3 as many as Joe. Joe has 36 more than his brother."

We know that Joe's brother has 1/3 as many as Joe. In the problem, they tell us Joe has 36 more than his brother.

This tells us that 2/3 of Joe's baseball cards are 36. 

To figure out what 1/3 of his total is we just have to divide 36 by 2 (because 36 is 2/3 of the total).

36 divided by 2 is 18

18 is 1/3 of the total. We just need to multiply 18 by 3 to get the answer!

18 times 3 is 54

Joe has 54 baseball cards.  

Hope this helped! 

We don't know how many cookies there are in a box so let's just assume that there are "x" cookies in the box.

He has a total of x+12 cookies.

We can create an equation like this (x+12)/6 = 7

It is divided by six because he divides the total cookies to six people and it equals to seven because each gets 7 cookies.

We can cancel out the fraction so we mutiply (x+12)/6 x 6 = 7 x 6

Giving us x + 12 = 42

Therefore x = 30

Hope this helps! 

Thank you! 

"John spent 2/5 of his money and had $240 left."

First, we know that 3/5 of the money is $240 dollars. If we want to figure out 1/5 of the money we just have to divide 240 by 3!

240 divided by 3 is 80!

To figure out 2/5 we just multiply 80 by 2 which is 160!


"George spent 4 times as much money as John and had 1/3 of his money left"
 

We know that John spent $160 so 4 times 160 is just multiplication!

4 times 160 is 640!

We know that 640 is 2/3 of George's money, so to figure out 1/3 we just divide 640 by 2!

620 divided by 2 is 320!

320 is 1/3 so multiplying 320 by 3 will get us our answer

The full amount of George's money is 960!

Hope this helped! 

SirAkko, I really like your explanation! Not only did you tell why you did things, you also provided explanations to certain vocabulary in case the person asking the question didn't know, such as telling ratios are also fractions and difference is the same thing as subtraction. Thanks for some insight on how I should answer questions thoroughly and explain to others.

Just making the ratio to the original thing.

5+4 = 9

18/9 = 2

10:8

a. 10-8 = 2 dollars

b. 8 dollars.

First, we have to turn 5:4 into two numbers that add to 18.

(Remember ratios are also fractions!)

We can multiply 5:4 by 2 to get 10:8!

10 + 8 = 18

Now that we have a working ratio let's answer the questions!

(a) All we have to do is subtract 10 and 8 because we need to figure out the difference!

(Fun Fact: Difference is another way of saying subtraction) 

10 minus 8 is 2 


(b) The ratio is the amount he spends to saves. This means he saves 8 (10:8) in a week! 


Answers:
(a) 2
(b) 8

Hope this helped! 

Thank You! I understand this problem better!

Its portugese I think, also I just used a translator

Um sorry, I don't know any Spanish.

Yea. 8 * 9 = 72

No prob 

Ty for the help 

We can easily find out by subtracting to total number of people that listen by the males who listen 130-62 to get the answer of 68 females that listened.

Let's start by finding 3b+c=41

From the problem "bc=60", we know that b and c are both divisors of 60. We can use this to help us solve this.

These are the divisors of 60 if you need them:

1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.

Before looking at what B and C are I want you to try to figure it out...

Ok, "b" is 12, and "c" is 5! 

Now we just have to figure out "a"


"2a+3b=52"

We already know b is 12 so we can rewrite the problem like this

2a + 36 (because 12 times 3 is 36) = 52

Now we just subtract 36 from both sides and we get

2a = 16

Now we just have to divide each side by 2 and...

 "a" is 8!
 

"Find a+b+ c."

Finally, we add up all our numbers

8 + 12 + 5 = 25! 

Hope this helped!