Which expression shows you how you can use mental math to simplify the expression (53 + 23) + 7 most easily?

53 + (23 + 7) (23 + 53) + 77 + (23 + 53) 7 + (53 + 23)

If someone is drawing a map of a local park and it is 500 feet long and 400 feet wide and they need it to fit on a piece of paper so they make the long side 10 inches. What scale are they using and what is the area of their drawing in square inches?

What's 3.548 rounded to the nearest 100

8 (7k + 7d + 7) for k = 5 and d = 4

If 150 represents 3/4 of students at central. What is the total student population at central?

3) Fred bought a soft drink for four dollars and four candy bars. He spent a total of twenty dollars. How much did each candy bar cost?

1. If you earn $900 biweekly, how much do you earn monthly? 2. If you earn $12.50/hr and work 8 hours a day for 5 days a week, how much do you earn in one week? 3. If you earn $700 weekly, how much do you earn annually? 4.

4. What value can be written on the blank line to make the expressions equivalent? 5x + 20 = 5 (x+)

Mr. Parker is building a square ball room with a square dance floor surround by carpet to the wall. The room has a side length of 3x-4, and the dance floor has a side length of 2x-6. How many square meters of carpet will Mr. Parker need if x=5

Factor n^3 - n^2 + 3n - 3. A) (n^2 - 3) (n - 1) B) (n^2 + 3) (n - 1) C) (n^2 + 1) (n - 3)

If a measured distance of 10 inches on your map represents an actual distance of 20 miles, what is the fractional scale of the map