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 = 
42% of what is 63
0.42x = 63
x = 63/0.42
x = 150
There are 150 dancers in the school
For the triangle picture:
2/6 = 5/x
2x = 30
x = 15
For the other picture:
3.2/2 = a/8
The third option applies.
Other option does not apply.
Because for Option 4,
It should be 2/3.2 = b/6.4
For option 3,
it should be b/6.4 = 5/8
Answer:
96 square units
Step-by-step explanation:
The area of a parallelogram is calculated by multiplying height × base
The height given for this parallelogram is 12 units and base is 8 units
12 × 8 = 96 square units
