Basically each part of the first complex number gets multiplied by each part of the second complex number. You are multiplying 2 binomials.
(15 + 56i(7 + 4i)
= 105 + 60i + 392i + 224i^2
= 105 + 452i - 224 ( because i^2 = -1)
= - 119 + 452i
Answer: If there is no clear pattern to the points when graphed on a coordinate plane, we say there is no relative correlation.
In a scatter plot, we are looking for a pattern (or correlation) between the points. Sometimes, they increase together. Sometimes, they decrease together.
If we can't see a pattern, we say there is no correlation.
I’m 100% sure you can check “the answer will be larger than 550”
I don’t really know about the others sorry!
Answer:
I'm pretty sure that is correct. 3 non collinear points always form a triangle.
Answer:
1. If x = 4 and y = 8, u = 3x - 4 would make sense because 3x, or 3 x 4 = 12
12 - 4 = 8 y = 8 (True)
2. m = 12 and n = 200 . n = 15m - 20 15 x 12 = 180 180 - 20 = 200 Would not make sense because 180 - 20 is 160 (False)
3. a = 5 and b = 48 b = 48 . 8a + 8 = 8 x 5 + 8 8 x 5 + 8= 48
(True)
4. G = 40 and h = 1000
H = 25g + 300
25g = 1000
1000+300= 1300, not 1000
(false)
