Out of 11 people surveyed at the mall, 2 have a car based on these results of the 429 people at the mall how many have a car
1 answer:
Answer:
78 people
Step-by-step explanation:
Given that out of 11 people surveyed at the mall, 2 have a car.
Based on these results if this ratio remains constant, then by unitary method
1 people surveyed at the mall, people have a car.
Therefore, 429 people surveyed at the mall, people will have a car. ( Answer )
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Answer:
89.0°
Step-by-step explanation:
The segment from the centre of the circle to the chord is a perpendicular bisector, hence
third side of right triangle = 12.7 ÷ 2 = 6.35
The angle subtended at the centre by arc CD is twice the angle subtended by the right triangle at the centre
The triangle from the centre to C is congruent to the triangle from the centre to D
Calculate the angle (Θ ) in the right triangle using the sine ratio
sinΘ = =
Θ = (
) ≈ 44.5°
Hence
measure of CD = 2 × Θ = 2 × 44.5 = 89.0°