Question

you spin the spinner shown below once. each sector shown has an equal area.
what is p(not shaded sector)?
if necessary, round your answer to 2 decimal places.
your answer should be

• an integer, like 6
• an exact decimal, like 0.75
• a proper fraction, like 1/2 or 6/10
• an improper fraction, like 10/7 or 14/8

Explanation:

Step1: Count total sectors and non - shaded sectors

Total number of sectors \(n = 10\). Number of non - shaded sectors \(m=4\).

Step2: Use probability formula

Probability formula \(P=\frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}\). So \(P(\text{not shaded})=\frac{m}{n}=\frac{4}{10}=0.4\)

Answer:

\(0.4\)