MATHEMATICS MIDDLE SCHOOL

How many cards he has left​

Answers

Answer 1
Answer:

Answer:

Wrong grammar

Step-by-step explanation:

how many cards DOES HE HAVE LEft


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MIDDLE SCHOOL

31 out of 50 is what percent

Answers

31 out of 50 is 62%

Divide 31 over 50:


Multiply 0.62 and 100. This will convert the decimal to a percentage:

31/50
Put the denominator as 100 to make it a percentage.
To do that, multiply the top and bottom by 2.
62/100
Now make that a percentage by taking off the 100 and adding a percent sign
62%
Hope this helps. 
HIGH SCHOOL

you have the numbers 1-25 written on slips of paper. if you choose one slip at random, what is the probability that you will select a number that divisible by 4

Answers

Since there are 25 numbers there is 6/25 chances to pull a number divisible by 4 if you want a percent you divide the numerator 6 by the denominator 25 which is 0.24 then you move the decimal over to the right twice and you get 24%
COLLEGE

#14 write the given sentence as an equation. Tim'S age in 7 years will be three times what it was 19 years ago

Answers

The first thing we must do for this case is to define variables.
 We have then:
 x = Tim's age
 Now we write the equation:
 x + 7 = 3 (x-19)
 Answer:
 Tim's age in 7 years will be three times what it was 19 years ago:
 x + 7 = 3 (x-19)
MIDDLE SCHOOL

Use long division to convert the rational number 1/8 to its equivalent decimal form

Answers

1 Set up the long division.





8|1



2 Calculate 10 ÷ 8, which is 1 with a remainder of 2.



0.1

8|1.

8


2


3 Bring down 0, so that 20 is large enough to be divided by 8.




0.1

8|1.

8


20


4 Calculate 20 ÷ 8, which is 2 with a remainder of 4.




0.12

8|1.

       8


20

16


4


5 Bring down 0, so that 40 is large enough to be divided by 8.




0.12

8|1.

     8


20

16


40


6 Calculate 40 ÷ 8, which is 5.




0.125

8|1.

 -  8

      20

       16

         40

         40
















7 Therefore, 1 ÷ 8 = 0.125.

0.125

Answer: 0.125

HIGH SCHOOL

I need to find the factor of the polynomilas for the following problem -a3-100a

Answers

Factor out -a
-a(a²+100)
cannot factor further

MIDDLE SCHOOL

How do you write an inequality

Answers

An inequality describes a situation in which one quantity is greater than or less than another quantity. Unlike equations, they don't have a specific value as an answer. They show a range of values.

Example:

2x > 10 Divide by 2

When you solve that you'll get 5 and that shows that x is every number that's greater than 5.


To write an inequality, use a bar model to write and solve equations, solve an equation using the inverse operation, convert a real world situation to the problem, write an inequality from a word problem, solve inequalities with inverse operations, represent an inequality solution set on a number line.
MIDDLE SCHOOL

In class of 160 students, 90 are taking math, 78 are taking science, and 62 are taking both math and science. What is the probability of randomly choosing a student who is taking only math?

Answers

Hi!

All of the students that are ONLY taking math is 90.

That is 90/160 kids taking only math.

90/160 simplified = 9/16

The answer is 9/16

Hope this helps! :)
HIGH SCHOOL

5t-2r=25

solve for t.

Answers

Given 5t - 2r = 25

To solve for t,
first, we add 2r to both sides of the equation, to get

5t - 2r + 2r = 25 + 2r

5t = 25 + 2r

Next, we divide both sides of the equation by 5, to get

Answer:

t= \frac{25+2r}{5}

Step-by-step explanation:

MIDDLE SCHOOL

What is 62/120 expressed as a percent rounded to the nearest whole number?

Answers

Answer:

52%

Step-by-step explanation:

62/120 * 100%

Divide by 2 on top and bottom

31/60 * 100 %

.5166666666 * 100 %

51.66666666 %

To the nearest whole number

Rounding the 1, we look at the 6   6>=5 so we round the 1 to 2

52%

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