Answer:
11
Step-by-step explanation:
30-2(7+2)-1
PEMDAS says parentheses first
30-2(9)-1
Then multiply
30 -18 -1
Then subtract
12-1
11
Answer:
28 squares
Step-by-step explanation:
column is 7 squares long, row is 4 squares long, 4x7 = 28 squares
looks like the question is not finished. x
Answer:
Step-by-step explanation:
a) Let's
the length of the side of the small square.
Thus,






b) Now, the area of the small square is



The student should have phrased it to be "the difference between the product of 5 and y and 15", as the way the student writes it implies that 5y is being subtracted from 15 instead of the other way around.