Hello from MrBillDoesMath!
Answer:
2 - i
Discussion:
Evaluate F(x) = x^3 - 2 x^2 when x = i.
i^2 = -1 for i^3 = i ( i^2) = i (-1) = -i
So F(i) = (i)^3 - 2 (i)^2
= -i - 2(-1)
= -i + 2
= 2 - i
which is the last answer shown
Thank you,
MrB
Answer:
Step-by-step explanation:
Therefore, the equation of the line that goes through point (3, -2)and has slope ⅘ is
Answer:
The cost of sweatshirt is 12$
Step-by-step explanation:
so we are going to make 3 equations and solve it using the substation method
First- We know the price of the shirt is two times more so w = 2h
Second we know that the the tee shirt is 4 dollars less then the pair of shoes so t = h − 4
Third we take the combined of Brads purchases 3w + 5t + 2h =136
w = 2h
t = h − 4
3w + 2h + 5t = 136
So to solve we are going to to the sub method
3(2h) + 2h + 5(h-4) = 136 - just re written, now we get rid of the ( )
6h + 2h + 5h -20 = 136 - Now we need to move the -20 and add it too 136
6h + 2h + 5h = 156 - Now sum up the H's
13h = 156 - Now divide 13 by 156
h= 12
so the Cost of a sweatshirt is 12 dollars
Since it’s a 20:600 ratio you can just convert it and that would be a 1:30 ratio
