Find the rate of discount for a pair of pants that cost 65 dollars and are only on sale for 41.99 dollars. EXPLAIN each step.

Answers

Answer 1
Answer: You do an equation:

41.99 =65 x ( 1 - (x/100) )
X is the rate of discount
1- (x/100) = 41.99/65
1- (x/100) = 0,646
-(x/100) = 0.646-1
-(x/100) = -0.354
Then you multiply it by -1
X/100= 0.354
X= 0.354 x100
X= 35.4%
All good?

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Find the product. (4m^2 – 5)(4m^2 + 5)

Answers

Answer: 16m^4−25


Step-by-step explanation:

(4m^2−5)(4m^2+5)

=(4m^2+−5)(4m^2+5)

=(4m^2)(4m^2)+(4m^2)(5)+(−5)(4m^2)+(−5)(5)

=16m^4+20m^2−20m^2−25

=16m^4−25

The town library is raising money by selling old books for $2 each.Which equation can be used to find the amount of money raised if the number of books sold is known?Let x represent the number of books sold and y represent the amount of money raised.

Answers

y=2x
y is the amount of money made from the sold books
x is the number of books that are sold (it is x because you don't know how many will be sold, so you have to account for all possibilities)
2x is because every book is sold for 2 dollars, so that mean x is multiplied by 2 to get y

Answer:

y=2x

Step-by-step explanation:

y is the amount of money made from the sold books

x is the number of books that are sold

since every book is sold for 2 dollars it's 2x,

so that mean x is multiplied by 2 to get y

Trish is ordering t-shirts from a website that charges a certain amount per t-shirt plus a flat rate for shipping. The cost for a given number of t-shirts is shown in the table.20a. Write an equation to represent the situation. (Write your answer with no spaces, all lowercase letters, and write the slope as a decimal)

20b. What does the slope mean in the context of the situation?

20c. What does the y-intercept mean in the context of the situation?

Answers

Answer:

i don't know what grade this is

Step-by-step explanation:

i don't know

Selma hypothesizes that the mass of a sample of water will not change if it is frozen. She conducts an experiment to test her hypothesis. Her experimental steps are as follows:1. Fill a beaker with 500 mL of water.
2.
3. Place the beaker in the freezer.
4. After the water freezes, place the beaker on the balance and measure its mass.

Which of the following steps is missing from Selma's experiment?

Place the beaker on the balance and measure its mass.
Run the water through a filter to make sure there are no impurities in it.
Set a timer for 2 hours.
Use a thermometer to measure the water's temperature.

Answers

place a beaker on a balance and measure the mass

Answer:

place the beaker on the balance and measure its mass.

Step-by-step explanation:

In order to see if the mass of the water changed, Selma first needs to find out what the mass of the liquid water is in order to compare it to the mass of the frozen water.

How many time does 12 go into 50

Answers

50/12 = 4 (r= 2)

12 goes into 50 4 times with a remainder of 2~
4 times (if you're dividing, there's going to be a remainder of 2)

How many solutions does the equation y + 12 = y + 10 + 2 have?Zero
One
Two
Infinitely many

Answers

Infinitely many, because if you simplified the right side, it would equal the left side.

Answer:

Infinitely many

Step-by-step explanation:

i just took the test