MATHEMATICS MIDDLE SCHOOL

You buy a game for $40, and the sales tax is $2. What percent of the game price are you paying in sales tax?4%

5%

8%

20%

Answers

Answer 1
Answer: Any time you are solving a problem with percentages, use the formula below% = Is--- ----100 OfPercent over 100 = "is" over "of"In this case you are solving for percent and the "is" over "of" is $2 / $40Then you cross multiply and divide.100 x $2 = $200. 200 divided by 40 = 5. So the answer is 5
Answer 2
Answer: 2/40 simplifies to 1/20. Multiply both top and bottom by 5 and you get 5/100. So 5%.

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22.5% written as a fraction in simplest form

Answers

22.5% written as a fraction in simplest form is 9/40 . Hope i helped. 

Solve the following quadratic equation.4x^2-10=186



x = -10 and 10

x = -7 and 7

x = -4 and 4

x = -6 and 6

Answers

Answer:

x = -7 and 7

Step-by-step explanation:

4x^2-10=186 add 10 on each side

4x^2 =196 divide by 4  on each side

x^2 = 49 take a √  on each side

x = -7,7

Answer:

B. x= -7 and 7

Step-by-step explanation:

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A person made 4 blankets. each blanket used 180 inches of ribbon for the border. How many yards of ribbon did the person use for all four blankets

Answers

180 inches X 4 blankets = 720 inches 

1 yard = 3 feet

1 foot = 12 inches

12 inches X 3 = 36 inches

720 inches / 36 = 20 yards
I think it's 720 because 180x4=720

The number 6 is halfway between 4.5 and 7.5.Answer the missing numbers below.

The number 6 is halfway between 2.8 and .......
The number 6 is halfway between -12 and .......

Answers

6=(2.8+x)/(2)\n 12=2.8+x\n x=9.2\n \n \n 6=(-12+x)/(2)\n 12=-12+x\n x=24

What is two-thirds of a number minus six is -10

Answers

Lets call the number "x"
2/3x - 6=-10
Add 6 to both sides
         +6   +6
2/3x=-4
 Divide by 2/3 on both sides
-4 divided by 2/3 is
-8/3
x = -8/3 or -2 2/3
The number is -2 2/3.

How Can you divide that

Answers

First you ask yourself, can 8 go into 1?  The answer is no.  Can 8 go into 12? Yes, 1 time.  So you put 1 on top of the 2 and subtract 8 from 12.  That gives you 4.  Then you pull down the 8 from 128 and ask how many times can 8 go into 48?  The answer is 6.  So your answer is 16.  Hope I helped!
You can divide 128 by 8 and it would equal 16
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