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:
1 mile = $14
Step-by-step explanation:
We know how much the 18-mile trip is for sale, so to know how much 1-mile sale we just have to divide the total amount by the amount of miles
18 miles = $ 249
1 mile =
1 mile = 249 / 18
1 mile = 13.83
To know what the nearest dollar value is, we only have to check if what is after the whole number is May or less than .50
is larger so we round to the largest number that is 14
nearest dollar = $14
Answer:
Step-by-step explanation:
A rhombus has equal angles opposite
Opposite sides equal.
Answer: 2x
^4
+7x−4x
^2
−4
Step-by-step explanation:
2x
^4
−x*3−4x
^2
+10x−4
2x
^4
−3x−4x
^2
+10x−4
2x
^4
+(−3x+10x)−4x
^2
−4
2x
^4
+7x−4x
^2
−4
Answer:
10x
Step-by-step explanation:
By definition
So we just need to multiply the two functions
