Answer:
C is correct
Step-by-step explanation:
10x³+2x²+0x-11
+0x³+9x²+2x-2
=10x³+11x²+2x-13
Carol did not work 1/14 of the days.
1/14*28/1= 28/14=2 days she did not work
Carol worked at the bookstore 1/4 of the days
1/4*28/1= 28/4= 7 days at the bookstore
28-7-2= 19 days that she worked at the restaurant
Final answer: B
Answer:
The counters in a bag are red or blue. Assume 5 in total.
Step-by-step explanation:
Answer:
See below.
Step-by-step explanation:
Addition: closed
Example: -5 + 10 = 5, and -5, 10, and 5 are all integers
Subtraction: closed
Example: 10 - 8 = 2, and 10, 8, and 2 are all integers
Multiplication: closed
Example: -4 * 7 = -28, and -4, -7 and -28 are all integers
Division: not closed
Example: 5/2 = 2.5, and 2.5 is not an integer, although 2 and 5 are integers
The set of integers is closed under addition, subtraction, and multiplication because any addition, subtraction, or multiplication of integers always results in an integer.
The set of integers is not closed under division because a division of integers does not always result in an integer.
I hope that this made sense to you.
number 4 is x = 9 and number 5 is x = 10
