Answer:
A. 60
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
We have to find:
n when 
. So
Dividing both sides by 3
We round up, so the correct answer is:
A. 60
No, a function is always a relation. A relation may not always a function but the vice versa is true.
It's like the relationship between a rectangle and a square. A rectangle has 4 right angles and 2 sets of congruent sides while a square has 4 right angles and all sides are congruent. Which means that a rectangle is a square, but a square may not always be a rectangle.
Answer:
44.0 cm.
Step-by-step explanation:
The formula for the circumference of a circle is
So we can substitute 7 for r and 3.14 for pi:
cm
And since we're rounding to the nearest tenth, the answer is 44.0 cm.
1/2 ..................................................
Answer:
8
Step-by-step explanation:
Cheese= C
Jam= J
Ham= H
Tomato= T
Peanut butter= P
Mayonnaise= M
(C,H),(C,T),(C,P),(C,M),(J,H),(J,T)(J,P)(J,M)
Hope this helps :)
