Answer:
5 felt pads.
7 cards.
Step-by-step explanation:
Remark
- The total number of items is 12
- So let the felt sheets be x
- Let the cards = y
Equations and Solution
x + y = 12
Now the price is 7.75 that she has to pay for the 12 items. She wants to come back with 0 dollars.
0.5x + 0.75y = 7.75 Multiply this equation by 2
x + 1.5y = 15.50 write the first equation underneath and subtract.
<u>x + y = 12</u>
.5y = 3 Divide by 0.5
y = 3/0.5
y = 7
So she can get 7 cards.
x + y = 12
x + 7 = 12
x = 12 - 7
x = 5
So she can buy 5 felt pads.
A unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n. Examples are 1/1, 1/2, 1/3, 1/4 ,1/5, etc.
Answer:
The numbers 
such that the average value of 
on the interval [0, b] is equal to 8 are 
and 
.
Step-by-step explanation:
The mean value of function within a given interval is given by the following integral:
If , 
, 
and 
, then:
The roots of this polynomial are determined by the Quadratic Formula:
and .
The numbers such that the average value of on the interval [0, b] is equal to 8 are and .
In order to find out how much they both each pay, you would have to put two places in front of the percentage of the payment.
