Answer:
When someone says two points are collinear he means to say that two points are lying on the same line
Suppose a line and take two points A and B on it.
A and B are said to be collinear because they are lying on the same line
if the medicine leaves the blood stream at 10% per hour and 6 hours goes by 60% of the medicine would be gone. 60% of 50 is 30. so 30mg would have left. so there is only 20mg left.
Let being these two angles : angle A and angle B
we know that complementary angles assumed make 90 degree so
m<A +m<B = 90 degrees
and given again angle A is proportional inverse by 0,25 and angle B by 0,1(6)
A = 0,25 *x
B = 0,1(6)*x
A+B=90
0,25x +0,1(6)x =90
x(0,25 +0,1(6)) = 90
x(0,41(6))=90
x = 90/(0,41(6)) = 216,3
measure angle A = 0,25*216,3 = 54,075 degrees
measure angle B = 90 -54 = 36 degrees
Answer:
x^2 +6x +10xi -16 +30i
Step-by-step explanation:
(x + (3+5i))^2
Rewriting as
(x + (3+5i)) (x + (3+5i))
Let 3+5i = m
(x + m) (x + m)
FOILing
x^2 + xm+xm+m^2
x^2 +2xm + m^2
Replacing m with 3+5i
x^2 +2x (3+5i) +(3+5i)^2
Distribute
x^2 +6x +10xi +(3+5i)^2
Now FOIL (3+5i)^2
( 3+5i) ( 3+5i)
3*3+ 3*5i + 3*5i+ 25i^2
= 9 +15i+15i +25(-1)
9+30i -25
-16 +30 i
Replacing that in the equation
x^2 +6x +10xi -16 +30i