Answer:
2.28%
Step-by-step explanation:
Mr. bowens test is normally distributed with a mean (μ) of 75 and a standard deviation (σ) of 3 points.
The z score is used in probability to show how many standard deviation is a raw score below or above the mean. The formula for the z score (z) is given by:
For a raw score (x) of 81 points, the z score can be calculated by:
Therefore from the normal probability distribution table, the probability that a randomly selected score is greater than 81 can be given as:
P(x > 81) = P(z > 2) = 1 - P(z < 2) = 1 - 0.9772 = 0.0228 = 2.28%
So you subtitute y=3x into
2x+y=15
so
2x+(3x)=15
add like terms
5x=15
divide both sides by 5
x=3
subtitute x=3 into first equation (y=3x)
y=3(3)
y=9
The minimum and maximum temperatures in the house are 68.5°F and 76.5°.
Pulverization is defined as the separation of particles from each other rather than the breaking up of individual particles.
<h3>What is pulverization?</h3>
Pulverization is defined as the separation of particles from each other rather than the breaking up of individual particles.
It is applied in several fields, for instance, pulverization in waste management is simply the process of grinding collected solid waste into powder using the grinding machine thereby changing its volume and physical characteristic.
Learn more on pulverization here: brainly.com/question/21400963
Answer:
55+55+52+52=214
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