5-a-day: Monday, November 2

Question 1

A measurement is 137 cm, correct to the nearest whole number. What is the lower bound?

Answer 

Question 2

(x + 7) : (2x − 2) = 5 : 2. Find x.

x = 

Question 3

A 8 m ladder leans against a wall at 33° to the ground. To find how high up the wall it reaches, which ratio do you use with the 33° angle?

• A. sin
• B. cos
• C. tan

Question 4

Is 4a + 4b parallel to 2a + 2b?

• A. Yes
• B. No

Question 5

A car worth $8000 loses 15% of its value each year. What is it worth after 4 years? Round to the nearest whole number (type the number only).

Answer