81 is the answer to your question
I think your expected to roll the number 5 approximately 4 times out of the 26 time the dice was rolled.
Answer:
Samantha's grade was 1.29 standard deviations above the class mean, that is, she scored better than 0.9015 = 90.15% of the class.
Step-by-step explanation:
Z-score:
In a set with mean and standard deviation , the z-score of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
In this question:
She scored better a proportion of the class given by the p-value of z = 1.29
z = 1.29 has a p-value of 0.9015.
Samantha's grade was 1.29 standard deviations above the class mean, that is, she scored better than 0.9015 = 90.15% of the class.
Answer:
Lenox lead the race is = 1.5 miles
Reid run without a cramp = 1.75 miles
Step-by-step explanation:
given data
Lenox lead race =
total race = 2.5 mile =
cramp =
to find out
How many miles did Lenox lead the race and How many miles did Reid run without a cramp
solution
we know Lenox lead = and total race is 2.5 mile
so
Lenox lead the race is = of 2.5 mile
Lenox lead the race is = ×
Lenox lead the race is = = 1.5 miles
and
we know developed a cramp with of the race remaining
so
without cramp race is 1 - =
and run without cramp is of 2.5 mile
Reid run without a cramp = ×
Reid run without a cramp =
Reid run without a cramp = 1.75 miles
Answer:
<h2>SA = 5645cm²</h2>
Step-by-step explanation:
We have three pairs of congruent rectangles
9cm × 4m; 9cm × 5cm and 4m × 5cm
We know 1m = 100cm, therefore 4m = 400cm
The formula of an area of a rectangle l × w:
A = l · w
Substitute:
A₁ = 9cm · 4m = 9cm · 400cm = 3600cm²
A₂ = 9cm · 5cm = 45cm²
A₃ = 4m · 5cm = 400cm · 5cm = 2000cm²
Calculate the surface area:
SA = A₁ + A₂ + A₃
SA = 3600cm² + 45cm² + 2000cm² = 5645cm²