Answer:

Step-by-step explanation:


We have to find


If 

=
Hence our answer is

Answer:
MN : QR
LN : PQ
LM : PR
Step-by-step explanation:
The ratio seems to be 1 : 2.2
So the corresponding sides are:
MN : QR
LN : PQ
LM : PR
Answer:
5
Step-by-step explanation:
If the equation has roots of +-3i. The equation would be,
(x + 3i)(x - 3i)
which is equal to x^2 - (3i)^2 = x^2 + 3.
Using division either by synthetic or long method,
(x^3 + x^2 + 9x + 9)/(x^2 + 3)
is equal to,
x + 1 or x = -1
Thus, the answer is the second choice.
Answer:
12.895
Step-by-step explanation:
Standard deviation is a statistic that measures the dispersion of a sample. The sample standard deviation measures the spread of data distribution of the sample. It is usually used to estimate the population standard deviation.