quiz 22, 10.1 - 10.15 Flashcards
1
Q
-8 + (-4) =
A
-12
2
Q
16 + (-9) =
A
same as 16 - 9 = 7
3
Q
5 - (-6) =
A
same as 5 + 6 = 11
4
Q
-4(-8) =
A
32
5
Q
-20/4 =
A
-5
6
Q
3 to the 4th power =
A
3 x 3 x 3 x 3 =
9 x 9 =
81
7
Q
The sum of 9 and three times a number is 21. What is the number?
A
3n + 9 = 21
3n = 12
n = 4
8
Q
Two thirds of a number is 10. What is the number?
A
2/3n = 10
3/2 * 2/3n = 10 * 3/2
n = 15
9
Q
Five times a number is 40. What is the number?
A
5n = 40 n = 8
