Write 3^n / 9^n-1 as a power of 3
1 answer:
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we know that
Step 1
Find the value of x
m∠PSR=°
m∠PSR=°
so
Step 2
Find the value of m∠PSQ
m∠PSQ=
m∠PSQ=
m∠PSQ=°
therefore
the answer is the option
C) 45 degrees
Answer:
-13x²-5≠0
13x²+5≠0
x²≠ -5/13
option D
Answer:
0.0266, 0.9997,0.7856
Step-by-step explanation:
Given that the IQs of university​ A's students can be described by a normal model with mean 140 and standard deviation 8 points. Also suppose that IQs of students from university B can be described by a normal model with mean 120 and standard deviation 11. Let x be the score by A students and Y the score of B.
A)
B) Since X and Y are independent we have
X-Y is Normal with mean = 140-120 =20 and
C) For a group of 3, average has std deviation =