2 + 2 дает 4
find the slope of a line that passes (0,9 and (6,0)?
\(m = \frac{9-0}{0-6}=-\frac{9}{6}=-\frac{3}{2}=-1,5\)
(1) y = -2x + 5
(2) 4y + 8x = 1
4y = - 8x +1
y = -2x + 1/4
When you draw the straight lines, you can see that they are parallel. They have the same slope.
2x + y = 5
y = 5 - 2x
4y + 8x = 1
4(5-2x)+8x=1
20-8x+8x=1
20=1
There is no solution.
A better way.
sec^2x(1-cos)=tan^2x
Wie kann ich x1^-2/x2^-1=p1/p2 nach jeweils x1 und x2 auflösen?
10 : 1/4 = 10*4/1 = 40
7^x = 100
ln7^x = ln100
x*ln7 = ln100
x = ln100/ln7
x= 2,366589325...
80 : 3 = 26 Rest 2
