Question 7 is a, multiply ever number by 5
question 8 is also a, multiply every number by -2
Answer:
Step-by-step explanation:
the shape is a trpizoid with height y
A=(a+b)/2 *h (a=2x=4cm, h=y=4cm, b=2z=12 cm
A=(4+12)/2 * 4
Area=16/2 *4=8*4= 32 cm²
The Solution:
Given:
Required:
Find the standard deviation of the probability distribution.
Step 1:
Find the expected value of the probability distribution.
Step 2:
Find the standard deviation.
Thus, the standard deviation is 1.60
Answer:
1.60
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