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2 answers:
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The required equation is:
Step-by-step explanation:
Given
Let a be Anne's Age
and
b be Betty's age
Now we will onvert the given word problem in the form of equation step by step
"twice Betty's age." will be represented by
Then
"3 years younger than twice Betty's age." will be represented as:
Now
"Betty's sister, Anne, is 3 years younger than twice Betty's age."
Hence,
The required equation is:
Keywords: Word problems, linear equation in two variables
Learn more about linear equation in two variables at:
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P(z ≤ 0. 82) or p-value corresponding to z ≤ 0. 82 comes to be approximately 80%.
<h3>What is a z-score?</h3>Z-score indicates how much a given value differs from the standard deviation.
Where = mean
=standard deviation
P(z ≤ 0. 82) means the p-value corresponding to z≤ 0. 82.
From the standard normal table
P(z ≤ 0. 82) ≈80%.
Hence, P(z ≤ 0. 82) or p-value corresponding to z ≤ 0. 82 comes to be approximately 80%.
To get more about the z-score visit: