Answer:
z score Perry 
z score Alice 
Alice had better year in comparison with Perry.
Step-by-step explanation:
Consider the provided information.
One year Perry had the lowest ERA of any male pitcher at his school, with an ERA of 3.02. For the males, the mean ERA was 4.206 and the standard deviation was 0.846.
To find z score use the formula.

Here μ=4.206 and σ=0.846



Alice had the lowest ERA of any female pitcher at the school with an ERA of 3.16. For the females, the mean ERA was 4.519 and the standard deviation was 0.789.
Find the z score
where μ=4.519 and σ=0.789



The Perry had an ERA with a z-score is –1.402. The Alice had an ERA with a z-score is –1.722.
It is clear that the z-score value for Perry is greater than the z-score value for Alice. This indicates that Alice had better year in comparison with Perry.
Answer: 25percent
Step-by-step explanation: Divide 12 by 3 and you'll get 4.
That means 1/4 or a quarter of the 12 is 3.
(Convert the fraction to its percentage form)
1/4 or 1 divided by 4 equals 0.25
Multiply 0.25 by 100 and you'll get 25%
Note: you can convert easier from decimal form to percentage form by moving the decimal place two spaces to the right
please mark my answer as the brainliest
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Answer:
Step-by-step explanation:
Let b represent the number of beams.
Let c represent the number of connector plates.
Each aluminum piece is either a beam, which weighs 100 kg, or a connector plate, which weighs 2 kg. The total weight of b beams and c connector plates would be
100b + 2c
The boat must carry aluminum pieces for a construction project that weighs, in total, no more than 50,000 kilograms. Therefore, the equation becomes
100b + 2c ≤ 50000
The equation doesn't make any sense. Does that parenthesis mean an equal sign? Also, none of the answer choices applies to the actual answer. To find the x, you need to add 39 with 146...