Correct scientific notation has only one number to the left of the decimal point.
The correct one would be: 3.4 x 10(exponent 3)
If you expand out the brackets you get this,
(4+5i)(a+2i) = 4a + (5a)i + 8i - 10
The -10 comes from 5i * 2i.
Squaring i becomes -1.
Let's group the real stuff together,
and imaginary separately,
(4a - 10) + (5a + 8)i
For this to be purely imaginary,
the real part needs to be zero.
Therefore 4a - 10 = 0
Solve for a.
2/3 of pizza would be the answer
Answer:
nol and klj
Step-by-step explanation:
since they are parallel lines you would look for which angles correspond to the sample place on the intersection