Answer:
the third one where they intersect at 2 and -2
Step-by-step explanation:
The n subject of m = n² + 3 is 
How is n made the subject of m = n² + 3 ?
m = n² + 3
n² = m- 3

What does making n the subject mean?
- To make n the subject of the formula or equation, we must rearrange the variables in the formula or equation to have a single variable n that is equivalent to the other variables in the formula.
- The equation is then rearranged such that each term containing n is placed on the same side of the equation.
- If n appears in several words, factorization might be necessary.
- Just one n needs to be displayed at the conclusion to make it the subject.
- The result of square rooting a number or variable as an inverse operation may be positive or negative.
To learn more about making n the subject , refer:
brainly.com/question/625155
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Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.
Answer:
Step-by-step explanation:
the answer is b
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