Answer: discount amount is $6.75
Step-by-step explanation:
1. multiply 45 by 15% (0.15) = $6.75
2. price of an item with discounted amount would equal $38.25
Answer:
84
Step-by-step explanation:
126/42 = 3 Find the long side proportion
28 x 3 = 84 multiply by proportion
Answer:
yes, it’s proportional
Step-by-step explanation:
Answer:

Step-by-step explanation:
Both numbers are integers (not fractions)
if you write an integer in scientific notation:
1) inset a comma between first and second digit (3.70000000)
2) calculate all digits on the right side of insetting comma (there are 8 digits after a comma: 7,0,0,0,0,0,0,0)
3) a fraction from point 1) you multiply by 10 to the power, which is equal to a number of digits after comma (8)
4) according this tips, you have 
5) for a better notation, you may remove ending zeros
