MATHEMATICS MIDDLE SCHOOL

Sue answered 80% of 150 test questions correctly. How many questions did she not answered correctly?

Answers

Answer 1
Answer: .2 × 150 = 30 questions
Answer 2
Answer: 150×80% (.80)=120 150-120=30 questions incorrectly

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What are the three equivalent fractions of 12/5

Answers

12/5=24/10,36/15,48/20,  2 2/5

URGENT PLEASE HELP!!!! You can spend at most $10 on apples and grapes for a fruit salad. Grapes cost $2.50 per pound and apples cost $1 per pound. Write an inequality For the amount of grapes and apples you can buy.

Answers

Let the variable g represent how many pounds of grapes you can buy and the variable a represent how many pounds of apples you can buy.

You can spend AT MOST $10, meaning that you can spend less than or equal to this amount.  (Includes the cost of both grapes AND apples)

So your inequality would be:

2.5g + 1a ≤ 10

Please help!!!Which of the following lines is parallel to x=8?

3y=16

X=7

X=y

Y=8


Select the equation of the line that passes through the points (5,7) and is perpendicular to the line x=4.

Y=4

X=5

Y=7

X=7

Answers

The answer to question #1 is x = 7

For a line to be parallel to x = 8, it has to start with x = some number. Such a line would have an undefined slope.

Now, x = y is a line that goes through the origin. It has a slope of 1.

The answer to question #2 is y = 7

If a line is perpendicular to x = some number, then it has to be y = some number.

And this perpendicular line has to go through the point (4,7). So what is the y-value of this point, since the equation starts with y? The y-value is 7. So the equation has to be y = 7

What is the square root of -3

Answers

9 is the right answer
according to my calculator it says NaN

Find the original price. Discount: 20% Sale price: $75

Answers

The original price of the item is given by the equation A = $ 93.75

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the original price of the item be represented as A

Now , the equation will be

The discount percentage of the item = 20 %

The discounted sale price of the item = $ 75

So , original price - ( 20/100 ) original price = discounted price

Substituting the values in the equation , we get

A - ( 20/100 )A = 75

( 80/100 )A = 75

Multiply by 100 on both sides of the equation , we get

80A = 7500

Divide by 80 on both sides of the equation , we get

A = $ 93.75

Hence , the original price is $ 93.75

To learn more about equations click :

brainly.com/question/19297665

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How I solve these is to divide the sale price by the current percentage of the price. Since is is only 80% of the original price, I would divide $75 by 80, which will give you the amount that is equal to 1%. then multiply that number by 100 and it will give you the full cost of the item. 

$75 / 80% = 0.9375
0.9375 x 100 = $90.75

Evaluate. 2 • {[5 • (60 – 14 ÷ 7)] + 25} • 5

Answers

the answer is 3150 :)
BODMAS :)
I believe its 5,150 hope i helped
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