There are several important information's already given in the question. Based on those information's the answer to the question can be easily deduced.
Number of cups of Oatmeal
required by Aunt Bess for making 6 dozen cookies = 3
Then
Number of cups of oatmeal
required by Aunt Bess for making 1 dozen cookies = (3/6)
= 1/2
So
Number of cups of oatmeal
required by Aunt Bess for making 18 dozen cookies = (1/2) * 18
= 9 cups
So Aunt Bess will require 9 cups of oatmeal for baking 18 dozen cookies. I hope the procedure is clear enough for you to undestand.
For #6, x=-3, add 4 to both sides, divide by 2. #7 is 8, #8 is 3, #9 is 3, #10 is -5.
x = 5y - z
You can think that x and z are numbers, and we have one variable z.
x -5y = 5y - 5y - z
x - 5y = - z
(x - 5y)*(-1) = - z *(-1)
z = - x + 5y
Answer: B. There are no integers that are whole numbers.
<u>Step-by-step explanation:</u>
A. Whole numbers are never irrational. TRUE
B. There are no integers that are whole numbers. FALSE!
There ARE integers that are whole numbers because Integers are positive and negative whole numbers.
C. There is only one whole number that is not a natural number. TRUE
Whole Numbers: 0, 1, 2, 3, ...
Natural Numbers: 1, 2, 3, ...
D. Natural numbers cannot be negative. TRUE
A. 8.75
B. 15
C. 40
D. 5
E. About 27.33333