Answer:
n(A) = 7
Step-by-step explanation:
Let set A be A = {a,b,c}
We can say n(A) = 3
So basically n(A) means the "number of elements (unique) in set A"
They have to be unique.
For this problem, set A is:
A = {-3,-1,1,3,5,7,9}
If we count, there are 7 unique elements in this set. Thus:
n(A) = 7
Divide the total cost by all 5 panes to get the cost of 1 pane:
14.25/5 = 2.85
Then multiply by 2:
2.85 * 2 = $5.7
Answer:
42
Step-by-step explanation:
alternate exterior angles are equal. Therefore 32 = y - 10. Solving for y:
y - 10 = 32
y = 32+10
y = 42.
Answer:
666.6667 feet²
Step-by-step explanation:
So.
Since the scale is 1 : 20, we can do 4 x 20 and 5 x 20, Which is 80 and 100.
Find area: 80 x 100 = 8000 we can just add 2 zeros to 80 since it's multiplying by 100.
So it's 8000in²
Then we do 8000 in to feet.
Which is ≈ 666.6667feet
btw it asked for feet so we give them FEET
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