Answer:
-3e^-2x(x+1)
Step-by-step explanation:
formula of byparts integration:
g(x)∫f(x)dx-∫∫f(x).d/dx(g(x))dx
=(6x+3)∫e^-2x dx-∫∫e^-2x.d/dx(6x+3)dx
=(6x+3)((e-2x)/-2)-∫(e^-2x)/-2 .6 dx
=(6x+3)((e-2x)/-2)+3(e^-2x)/-2
=(6xe-2x+3e-2x+3e-2x)/-2
=(6xe-2x+6e-2x)/-2
=6e^-2x(x+1)/-2
=-3e^-2x(x+1)
Answer:
The ratio of x:y is 1/2
Step-by-step explanation:
Let
x----> the number of Kg of brand A
y ---> the number of Kg of brand B
we know that
400x+280y=320(x+y)
400x+280y=320x+320y
400x-320x=320y-280y
80x=40y
x/y=40/80
x/y=1/2
Answer is 42 degrees! Half of a circle is 180 degrees, so 180+138 is 318. Now, we wanna find that smaller part of the circle. So, 360-318 gives the left over which is 42 degrees. Hope this helped! Brainliest is appreciated :DDD