52 mph
53 mph
54 mph
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Answer:
Option 3.
Step-by-step explanation:
A parallelogram is said to be a rectangle if
1. Opposite pair of lines are equal and parallel
2. Adjacent lines meet each other at 90 degrees.
Hence we have third option which satisfies both the conditions.
Answer:
C
Step-by-step explanation:
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Answer:
Adult ticket=$2
Student ticket=$1
Step-by-step explanation:
Let the cost of one adult ticket be $x and the cost of one student ticket be $y
Fred bought 7 adult and 2 student tickets for$16.
So,
7x+2y=16. ...(1)
And,John paid $7 for one adult and 5 student tickets.
So,
x+5y=7. ...(2)
From ...(2),
x=7-5y
Substituting the value of x in equation ...(1),
7(7-5y)+2y=16
or,49-35y+2y=16
or,33y=33
or,y=1
Now, substituting the value of y in ...(2),
x=7-5=2
Thus,the cost of one adult ticket is $2 and the cost of one student ticket is $1.
B. 60 inches to 76 inches
C. 64 inches to 72 inches
D. 52 inches to 84 inches
If the mean height of the population is 68 inches and the standard deviation is 4 inches, 99.7% of the population will have a height within ranges of; 52 inches to 84 inches.
In statistics, Standard deviation is a measure of the variation of a set of values.
σ = standard deviation of population
N = number of observation of population
X = mean
μ = population mean
We know that at 99.7% the measurements would be within 2 standard deviations of the mean.
Mean of 68 inches
Standard Deviation of 4
The lower range = 68– 4(4)= 52 inches
The upper range = 68+ 4(4) = 84 inches
Thus, the option (D) 52 inches to 84 inches is correct after using the empirical Rule.
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