Simplify using mental math 7 / 10 + 2 / 5 - 1 / 10

Answers

Answer 1

Answer: common denominator first. multiply 2/5 by 2 in the top and bottom so they all have a denominator of 10

7/10+4/10-1/10=10/10

10/10=1

Answer 2

Answer: Assuming mental math still follows the order of operations, you have
$(7)/(10) + (4)/(10) - (1)/(10) = (10)/(10) = 1$

So the answer is 1.

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A film starts at 10. it lasted 3 hours. what time did it end

Answers

1:00 would be the answer...

Either 1 am or 1 pm. (depends on if it started in morning or afternoon)

A coin-operated machine sells plastic rings. It contains 6 yellow rings, 11 blue rings, 15 green rings, and 3 black rings. Suzy puts a coin into the machine. Find the theoretical probability that she will get a green ring. Express your answer as a fraction in simplest form.

Answers

1) you have to add all the rings together to find the denominator

6 + 11 + 15 + +3 = 35

2) the numerator is the amount of rings of the certain color you are trying to find the probability of

15

3) find the theoretical probability! 15/35

4) simplify

15/35 (divide both by 5) = 3/7
hope it helped :)

Ran 4 miles in 2 hours coloring activity

Answers

8? I don’t get it to much sorry

How to solve -2/3 w+5=4

Answers

$- (2)/(3) w + 5 = 4$

Refine:

$5 - (2w)/(3) = 4$

Multiply both sides by 3 :

$3 * 5 -3* (2w)/(3) = 3*4$

Refine:

$15 - 2 w = 12$

Subtract 15 from both sides:

$15 - 2w - 15 = 12 - 15$

$- 2w = -3$

Divide both side by -2 :

$(-2w)/(-2) = (-3)/(-2)$

$w = (3)/(2)$

hope this helps!.

Mark is saving money to buy a new bike, he needs a 120 dollars, but has only saved 60 percent how much money has a saved.

Answers

60% of 120 is 72. Therefore, Mark has only saved 72 dollars.

I think he has saved 72$
hope that helps!

there are 4 new students. they are holding a pep rally to introduce them. how many different ways can they be introduced

Answers

Answer:

They can be introduced 24 different ways

Step-by-step explanation:

To find this, use the factorial function (!)

4! = 4 * 3 * 2 * 1 = 24

Answer:

They're name and age.

Step-by-step explanation:

Step 1: The student would say his/her name.

Step 2: The student would say his/her age.

Step 3: The student would say his/her birthday.

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Divide long 3.2 : 82.0768

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A store sold 6 fruit trees five of the trees were apple trees what fraction of the trees were Apple trees?