30 people liked Brand X. This is 20% of the people in a survey.
1 answer:
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Answer:
B) 25°
Step-by-step explanation:
Assuming the quadrilateral is the one shown in the picture attached, then a triangle ADC is form, where m∠ADC = 125° and m∠1 = 30°. The addition of the three angles of a triangle is equal to 180°, so:
m∠ADC + m∠1 + m∠2 = 180°
Replacing with the known values and isolating m∠2 we get:
125° + 30° + m∠2 = 180°
m∠2 = 180° - 125° - 30°
m∠2 = 25°
Answer:
Probability of drawing four balls numbered 1, 4, 8, and 6 from a 8 ball bucket = 0.041667
Step-by-step explanation:
Probability is of the ratio of number of favorable outcomes to the total number of outcomes.
Here outcome is drawing 4 balls from a 8 ball bucket.
Favorable outcome is randomly drawing four balls numbered 1, 4, 8, and 6.
Total number of ways in which 4 balls from a 8 ball bucket can be drawn is given by 8 x 7 x 6 x 5 = 1680.
Total number of ways in which drawing four balls numbered 1, 4, 8, and 6 from a 8 ball bucket is given by 8C₄
Probability of drawing four balls numbered 1, 4, 8, and 6 from a 8 ball bucket is given by
Probability of drawing four balls numbered 1, 4, 8, and 6 from a 8 ball bucket = 0.041667