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2 answers:
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Answer:
9cm
Step-by-step explanation:
The CIRCUMFERENCE OF A CIRCLE is the distance round the circle.
It has the formular 2πr.
were r = radius
C = 2πr
72 = 2 × 3.142 × r
72 = 6.284r
dividing bothsides by 6.284
r = 72/ 6.284
r = 11.457
AB is an arc.
Lenght of an arc
Answer: 84.61%
Explanation.
Refer to the diagram shown below.
When the z-score is z = 0, then the area under the distribution curve is 50%, which corresponds to the mean, μ.
The given z-score is greater than zero, so the shaded area is 34.61%. to the right of z=0
The area to the left of z = 1.02 is 50% + 34.61% = 84.61%.
This percentage represents the people with IQs at or lower than Atfif's score.
Explanation.
Refer to the diagram shown below.
When the z-score is z = 0, then the area under the distribution curve is 50%, which corresponds to the mean, μ.
The given z-score is greater than zero, so the shaded area is 34.61%. to the right of z=0
The area to the left of z = 1.02 is 50% + 34.61% = 84.61%.
This percentage represents the people with IQs at or lower than Atfif's score.