Answer:
a) 54 mph to 144 mph
Step-by-step explanation:
We don't know the shape of the distribution, so we use Chebyshev's Theorem to solve this question. It states that:
At least 75% of the measures are within 2 standard deviations of the mean.
At least 89% of the measures are within 3 standard deviations of the mean.
At least eight-ninths of the player's serves.
8/9 is approximately 89%
So
Mean: 99, standard deviation: 15
99 - 3*15 = 54
99 + 3*15 = 144
So the correct answer is:
a) 54 mph to 144 mph
Y = 1
Using y = mx + c.
Compare to y = 1, y = 0x + 1 ,
We can see that the slope m = 0 and the vertical intercept, c = 1.
For the line perpendicular to y = 1
Condition for perpendicularity m₁m₂ = -1
m₁ = 0, m₂ = ?
0*m₂ = -1
m₂ = -1/0 = Negative Infinite or Infinite
Slope of line perpendicular to y = 1, is = Infinite.
Answer:
Rotation of a point through 180°, about the origin when a point is rotated about the origin through 180° in anticlockwise or clockwise direction, it takes the new position
Step-by-step explanation:
Answer:
D.) 10/11
Step-by-step explanation:
Here the given word Probability has 11 letters in it. And we have to calculate the Probability of not selecting a letter P from the above word.
So the formula for calculating any probability is Total Favorable outcomes / Total number of outcomes.
Here total number of outcomes are 11 as word Probability has 11 letters.
So the probability of selecting letter P from word Probability = 
Now the P(not P) = 1 - P(selecting letter P)
= 1 - = 
