Answer:
10 songs
Step-by-step explanation:
Let number of songs Craig and Jeff downloaded be s
5.50 + 0.25s = 0.80s
5.50 = 0.55s
s = 10
Here are the Three Main Economic Questions
1) Who consumes the goods and services produced in society?
2) What goods and services must be produced in society?
3) How should goods and services be produced in society?
These questions are very important because it deals on how available resources are allocated to produce essential goods and services demanded by consumers.
Answer:
The following statements are correct
The cost of 100 cans of tennis balls is $250
The cost of 120 cans of tennis balls is $300.
The cost of 250 cans of tennis balls is $625
Step-by-step explanation:
30/12 = 2.5 per can
100*2.5 = 250
120*2.5 = 300
250*2.5= 625
Answer:
third option
Step-by-step explanation:
Using De Moivre's theorem
( + i)³ , then
| + i |
=
= = = 2
arg( + i) = ( ) =
Thus
( + i)³
= 2³ [ cos(3 × ) + isin( 3 × ) ]
= 8 [ cos() + isin( ) ]
Answer: (8,90°)
To get this answer, you multiply the r values together to get 2*4 = 8. At the same time, you add the theta angles to get 45° + 45° = 90°
The general rule is that if A = (r,theta) and B = (s,phi) then
A*B = (r*s,theta+phi)
where the point (s,phi) is a polar form point.