Answer:
The expression that can be used is 0.80x
Step-by-step explanation:
Let
x ----> original price of an item
Remember that

That means---> the sale price is 80% of the original price
To find out the sale price, determine the 80% of the original price
----> percentage in decimal form
Multiply the original price by the percentage in decimal form to obtain the sale price
so

-9 is a rational number. Rational numbers are numbers that can’t be written as a simple fraction like pi (3.14...etc)
Answer:
um....
1. 4
2. 3
3. 5
4. 8
Hope this helps.
Step-by-step explanation:
You can see that if the small rectangle is 2/3 of the big triangle by the 4 and 6 that it gives you. If you divide 10 by 2 and multiply it by 3, you get the answer you need. which is 15.
Answer:
18.90
Step-by-step explanation:
3x12=36
36-15=21
21 x 0.9