Answer:
The percentage of the data between 580 and 620 is 68.26 %
Step-by-step explanation:
Given,
Mean, = 600,
Standard deviation, = 20,
Using the equation,
Z-score for the data 580 =
While, the z-score for the data 620 =
Using normal distribution table,
P(580 < z) = 0.1587
Also, P(620 > z) = 0.8413
Hence, the percent of the data is between 580 and 620 = P(620 > z) - P(580 < z)
= 0.8413 - 0.1587
= 0.6826
= 68.26 %
The fox will run at a faster speed than a rabbit.
Unit conversion is the process of changing a quantity's measurement between different units, usually using multiplicative conversion factors.
Given that a rabbit can run short distances at a rate of 35 miles per hour. A fox can run short distances at a rate of 21 miles per half hour.
Compare the speed of the rabbit and the fox as below,
Rabbit speed,
21 miles ⇒ 1/2 hour
21 x 2 miles ⇒ 1 hour
42 miles ⇒ 1 hour
Fox speed,
35 miles ⇒ 1 hour
The Fox will travel 42 miles in an hour than the rabbit.
Therefore, the fox will run at a faster speed than a rabbit.
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B. 9x²-6y²+3x
C. 9x²-12y²+3x
D. 9x²-12y²-11x
Answer:
Step-by-step explanation:
Distribute the negative sign in the first set of parentheses:
Combine the terms that are alike:
Therefore, the sum of the polynomials is:
Answer: The value of y is 8
Step-by-step explanation:
Since we know x=2 we can sub in 2 for x in the equation
y=2(2)+4
y=4+4
y=8