The median and mode of the given data is 30 and 32 respectively.
Step-by-step explanation:
Given,
The number of stories in 11 buildings are 17,19,20,21,24,30,33,37,38,40,40
To find the median and mode of the data.
Formula
Mean = sum of the data ÷ number of terms
If the number of term is odd, the median = 
th term
Mode = 3 Median - 2 mean
Now,
Mean = (17+19+20+21+24+30+33+37+38+40+40)÷11 = 29
Median = 
th term = 6th term = 30
Hence,
Mode = 3×30-2×29
= 90-58 = 32
To solve the equation, it is necessary to isolate the unknown variable "x" first. This is done as shown below:
2x - 3 = 15
Adding 3 to both sides of the equation:
2x - 3 + 3 = 15 + 3
2x = 18
Dividing 2 from both sides:
2x/2 = 18/2
x = 9
Among the choices, the correct answer is B.
Answer:
x squared plus two times x minus one = zero.
Step-by-step explanation:
(This is a Quadratic equation in the variable x).
Take the square root of 64.
You get 8.
-sqrt(64) = -8
-8 is rational since it can be written as a fraction of integers.
