Answer:
x=16; y=24
Step-by-step explanation:
for (x,23), 23=0.5x+15
x=16
for (18xy), y=0.5*18+15=24
9514 1404 393
Answer:

Step-by-step explanation:
In the English expression, you need to understand that "A divided by B" means that A is the numerator and B is the denominator of the fraction representing the division. Here, "B" is "the quantity of ...", which means that the stuff after "of ..." is to be treated as a single item, the denominator in this case. That item is "x plus y." So, the expression in math terms is ...

When this is written in plain text, the "quantity" is put in parentheses, because the fraction bar no longer serves as a grouping symbol:
9/(x+y)
These expressions match the first choice, A.
Answer:
C. 3 eggs
Step-by-step explanation:
Mr. Niles used 5/12 of a carton of eggs to make breakfast Saturday. He used 2/12 of the carton on Sunday. How many more eggs did he use on Saturday?
A. 7 eggs
B. 4 eggs
C. 3 eggs
D. 1 egg
A carton of egg = 12 eggs
Saturday
5/12 of a carton of egg
= 5/12 × 12
= 5 eggs
Mr. Niles used 5 eggs on Saturday
Sunday:
2/12 of a carton of egg
= 2/12 × 12
= 2 eggs
Mr. Niles used 2 eggs on Sunday
How many more eggs did he use on Saturday?
= 5 eggs - 2 eggs
= 3 eggs
C. 3 eggs
Answer:
12×5 is 60÷2 is 30
Step-by-step explanation:
the area is 30m square
The answer is -8 the angles of the triangle are 180 so
180=42+x+76+x+78
180=2x+196
2x=-16
x=-8