when you solve a problem by working backward, what does your answer represent? how can you check your answer?

Answers

Answer 1

Answer: Lets say you have an addition problem

3 + 7 = ?

To figure that you can just add in your head since its easy.

3 + 7 = 10

You can work backwords to check to see if your awnser is right.

When you work backwards you do the opposite of what you are doing, so if your adding the opposite would be subtracting, and if your multiplying than the opposite would be dividing.

So you could work it out like this:

(Regular⬇️)
3 + 7 = 10
(Backwards⬇️)
10 - 7 = 3

And if you get the same numbers that were in the original awnser than you are correct! Hope this helps!!!!

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What does point (0,0) and (6,72) represent ?

Answers

Answer:

(0,0) means that at 0 minutes 0 pages printed

(6,72) means that at 6 minutes 76 pages printed

Step-by-step explanation:

x is minutes y is pages printed

Answer:

Step-by-step explanation:

(0,0) means that no papers were printed at all, while (6,72) means that in 6 minutes 75 paper were printed

I've been trying for 3 hours to answer these problems please help!! Find the value of the square root to the nearest tenth for the numbers:
77, 23, 31, 46, 9, 53, 108, and 10

Answers

Answers:

77 = 8.8

23 = 4.8

31 = 5.6

46 = 6.8

9 = 3

53 = 7.3

108 = 10.4

10 - 3.2

I was wondering if somebody could teach me Algebra easily. I am only in Elementary school but I can pick things up quickly. I am giving you ALL my thanks if you could do this for me!!

Answers

Algebra is just replacing numbers with symbols. Usually x and/or y. if x=3 then 5x=15. this is the basic idea of algebra is that you take real and imaginary numbers and make a symbol of it and find what he symbol mean.

algebra is numbers and variable's. You will learn a bit of it in 6th grade.you have to find x or do some other things.

https://www.youtube.com/watch?v=3vDoEVRS_7s

^^^ gives a good example I do Not own the video all rights go to the owner. its on you tube!

Teresa's restaurant bill comes to $29.99 before tax. If the sales tax is 6.25% and she tips the waiter 20%, what is the total cost of the meal?

Answers

Teresa's restaurant bill is 29.99 dollars before the tax.The sales tax is said to be 6.25% of the total amount .=> 6.25% = 0.0625=> 29.99 dollars * 0.0625 = 1.87 dollars is the sales tax that will be added to his payment,=> 29.99 + 1.87 = 31.86 dollars is now here current payment.Next, he needs to give 20% tip to the water.=> 31.86 * .20 = 6.37 dollars is the total amount for the tip to the waiter. => 31.86 + 6.37 = 38.23 dollars will be the total amount that Teresa needs to pay for her restaurant meal.

Answer:

The total cost of the meal is $38.23

Step-by-step explanation:

To find out the tax, you multiply $29.99 times .0625. The tax is 1.87

The total before the tip is $31.86

To find out the tip, you do 31.86 minus 20%. The amount is $6.37

Then you add $31.86 and $6.37 together to get $38.23

X=y+6
X+6y=20

Solving systems of equations using substitution

Answers

To get the answer we can subsittute first equation into second.
x+6y=20
y+6+6y=20
6+7y=20 /-6
7y=14 /:2
y=2
Now we can back substitute
x=y+6
x=2+6
x=8
Finally we get
x=8
y=2

A baker needs a total of 13 1/3 cups of flour to make four batches of cookies. How much flour, in cups, does she need for each batch of cookies?

Answers

I believe the answer is 3.325 cups of flour for 1 batch.

HOPE THIS HELPED
:)

Answer:

The answer is 3.325 cups of flour for 1 batch.

Step-by-step explanation:

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