Need Help With math Homework?

Question

i dont want people to give the the answers , i need someone to explain how to do them so i can do it myself, because the math is making no sense to me, im not doing god in math at all :(

17. 4/9 x ? = 1 1/3

19. write two fractions whose product is between 10 and 11

20. write two decimals whose product is between 1 and 2

22.B. write an equation that describes the relationship between the volume of the container (v) and the number of containers needed (n) to hold 240 liters of juice

can someone help me? just not give me the answers? because i need to know how to do this on my own

yeah.. uhm.. im super confused now, i have the brain of like.. a 4th grader or something , because this is 7th grade math , so.. could someone tell me how to wor out the problem in really easy terms?

Answer 1

17. 4/9 x = 1 1/3
First ,convert the 1 1/3 to a single fraction by multiplying the denominator by the whole number and adding it to the numerator.
Second, multiply both sides by 9/4 as this will isolate the x on one side of the equation.
The equation will look like this x = 4/3 * 9/4
Third, Multiply the two fractions and you will have your answer to the equation.
Fourth, plug your answer in to where the x was in the original equation to check it.

Answer 2

17. you need to solve for x in other words what do you multiply 4/9'ths by to get 1 1/3 to do this we need to get some like terms going so we can do it easier. so we convert 1 1/3 into a simple fraction like this.

4/9x = 3/3 +1/3
4/9x= 4/3

Next we divide 4/3 by 4/9 to get x alone on one side.

x = [4/3] / [4/9]

now remember (i hope) that dividing a fraction by a fraction is the same as multiplying by the reciprocal so our division problem becomes a multiplication problem like this..

x= [4/3] * [9/4]

now we multiply top by top (numerator by numerator) and bottom by bottom (denominator by denominator) which gives us..

x= [4*9] / [3*4]
x= 36/12

reduce the fraction
x=3

I dont have time right now to answer the others but I will look you up later.. okay??

Answer 3

take a look at #19. you need a fraction that fits between 10 and 11. Do you know how to make a fraction? / . The bottom number will be 11 and anything below 11 will be the right answer. you can do the same for # 20.