Answer:
a.
Step-by-step explanation:
Answer:
The correct answer is <u>D) -15, 15</u>
Step-by-step explanation:
(-)15^2 = 225
Therefore, x^2 = 225 = (-)15^2
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.
Answer:
The expressions that represent the distance between a and b on a number line is:
A. |a-b|
B. |b-a|
Step-by-step explanation:
We know that a absolute value of a number is the magnitude of a number without regarding the sign.
We know that the distance between two numbers a and b is calculated as the absolute difference between the two numbers.
Hence, the answer is:
Option: A and Option: B