Answer:
Both the mean and median and they both gives a measure of 17
Step-by-step explanation:
Given the data about the ages of 7 people :
17,20,22,12,15,12,21
Ordered data: 12, 12, 15, 17, 20, 21, 22
To find the median :
Median = 1/2 * (n+1)th term
n = number of observations = 7
Median = 1/2(7+1)th term
Median = 1/2 *8 = 4th term = 17
Mean = Σx / n = (sum of ages) / number of observations
Mean = 119 / 7 = 17
Least to greatest
square root of five, square root of 8, 2.9, 3.2, square root of 13
Answer:
A)
Step-by-step explanation:
We can use logarithm properties to write it as:
On removing it gives:
Taking square root both sides.
Solving for we get:
and
Subtracting by 1 to both sides of both the above equations.
and
and
So we have got two solutions for the logarithmic equation.
Now we check the validity of the solutions by plugging values in the equation
Plugging
[As ]
So, thats a valid solution.
Plugging
As is undefined, so is not a valid solution which means its extraneous.
P(n,r)= n! /(n-r)!
<span>C(n,r)= n! / r! (n-r)! </span>
<span>P^c(n,r)= P raised to power C(n.r)? (If so, you know C(n,r) ; raise P to power C(n,r)) </span>
<span>P(A/B) = P(A ∩ B) / P(B)
Hope this helped :)</span>
If R is the midpoint of PS, then PR = RS -- (1)
Also, PR + RS = PS -- (2)
__________________
PR + RS = PS
7x + 23 + 13x - 19 = PS
__________________
Now, PR = PS
7x + 23 = 13x - 19
7x - 13x = -19 - 23
-6x = -42
x = -42/-6
x = 7
__________________
PS = 7x + 23 + 13x - 19
PS = 7(7) + 23 + 13(7) - 19
PS = 49 + 23 + 91 - 19
<u>PS </u><u>=</u><u> </u><u>1</u><u>4</u><u>4</u><u> </u>
Hope it helps!
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