keeping in mind that the radius in a circle is always the same length, namely DB = DC, and also recalling that the point of tangency is always a right-angle, Check the picture below.
Help real quick on this plzzz
1 answer:
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Answer:
Step-by-step explanation:
Given
<em>The attachment presents the table properly</em>
Solving (a): Percentage of those who play for less than 50 hours weekly
To do this, we simply consider the frequency of students that fall within:
1.0 - 7.9, 8.0 - 14.9,......,43.0 - 49.9
Their frequency is:
The percentage is then calculated as:
Solving (b): Percentage of those who play for 43 or more hours weekly
To do this, we simply consider the frequency of students that fall within:
43.0 - 49.9,......,64.0 - 70.9
Their frequency is:
The percentage is then calculated as:
Answer:
a₁ = -5, d = 7, a₂ = 2, a₃ = 9, a₄ = 16
equation of sequence:
Step-by-step explanation:
a₁ + a₂ + a₃ = 6
a₁ + a₁ + d + a₁ + 2d = 6
3a₁ + 3d = 6
a₁ + d= 2 ⇒ a₁ = 2 - d
a₄ = 16
a₁ + 3d = 16
2 - r + 3d = 16
2d = 14
d = 7
a₁ = 2-7 = -5
a₁ = -5, d = 7 ⇒ a₂ = -5+7 = 2, a₃ = 2+7 = 9, a₄ = 9+7 = 16
equation of arithmetic sequence: