There is a spinner with 15 equal areas, numbered 1 through 15. if the spinner is spun one time, what is the probability that the result is a multiple of 5 or a multiple of 3?

7 / 15 ≈ 0.47

Explanation:

1) Probability = number of positive outcomes / number of possible outcomes

2) Positive outcomes

Multiples of 5: 5, 10, and 15
Multiples of 3: 3, 6, 9, 12, 15.
Different outcomes (cancel the repetitions): 3, 5, 6, 9, 10, 12, and 15.

Number of different positive outcomes: 7

3) Number of possible outomes: 15

4) Probability = 7 / 15 ≈ 0.47

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )