Answer:
D
Step-by-step explanation:
The midsegment AC is half the sum of the parallel bases, that is
AC =
, then
x =
=
= 11 → D
X=17/2
Decimal form : x=8.5
Answer:
The probability is 
Step-by-step explanation:
From the question we are given that
The population mean is 
The standard deviation is 
The random number 
The sample size is 
The probability that the sample mean would be greater than 
Generally the z- score of this normal distribution is mathematically represented as

Now

substituting values


Which implies that


Now from the z-table the probability is found to be

Answer:
The Associative Property of Addition
Step-by-step explanation:
illustrated by the statement (3+2.8) + 5= 3+(2.8 +5). So D
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