Answer:
+ 
i
Step-by-step explanation:
Using the exact value
cos60° = 
and sin60° = 
, then
3(cos60° + isin60°)
= 3( + i) ← distribute by 3
= + i ← in the form a + bi
Its upsidedown, witch one do you need help with?
Since there are a 100 cents in a dollar. the 100 is the denominator.
46/100, reduce; 23/50, can't be reduced any further. so 23/50 is the fraction.
a: Answer is cuboid
b: top & base will be 5*6 = 30 in ^2
both right & left side wil be 5*2 = 10 in^2
front & back will be 6*2 = 12 in^2
Hope that will help you :)
so basically what you would have to do is set up your numbers. it would look something like this. 68
× 49
-------------
and would then multiply 9 by 8, 9 by 6. put it down below the line while making sure to carry the numbers if need be. then do the same with the 4 times 8, and 4 by 6.
