A^2 - b^2 ...difference of squares
so
9m^4 - 49n^6 = (3n^2)^2 - (7n^3)^2
answer
C. 9m^4 - 49n^6
First find the difference that went by subtracting the 2 numbers:
340 - 306 = 34
divide that by the number of students that went to the first dance:
34 / 340 = 0.1 = 10% decrease
Answer:
-7/8
Step-by-step explanation:
- 2 5/8 * 1/3
Change the mixed number to an improper fraction
2 5/8 = (8*2+5)/8 = 21/8
-21/8 *1/3 = -7/8
Answer:
The average spent per person would be about $27.63
Step-by-step explanation:
$63.25 + 15(3)
Step 1 - Multiply 15 (the tip) times 3 (amount of friends) which equals 45% (or $19.63)
Step 2 - Add 63.25 and 19.63 which equals 82.88.
$63.25 + $19.63 = $82.88
The average bill in total would be about $82.88
Step 3 - Divide the total by 3(each person)
82.88 ÷ 3 = 27.63
The average spent per person including the tip would be about $27.63.
