Answer:
They both are not correct.
Step-by-step explanation:
3+(-53) = -50 not -27 or 8.9
Answer: 10
Step-by-step explanation:you say they are equal (seems right )
Add them together then subtract 10 then divide by 8%
This is the concept of algebra, to solve the expression we proceed as follows;
cos 2x-cosx=0
cos 2x=cosx
but:
cos 2x+1=2(cos^2x)
thereore;
from:
cos 2x=cos x
adding 1 on both sides we get:
cos 2x+1=cos x+1
2(cos^2x)=cosx+1
suppose;
cos x=a
thus;
2a^2=a+1
a^2-1/2a-1/2=0
solving the above quadratic we get:
a=-0.5 and a=1
when a=-0.5
cosx=-0.5
x=120=2/3π
when x=1
cos x=1
x=0
the answer is:
x=0 or x=2/3π
Answer:
The sale price is 79 dollars :P
Step-by-step explanation:
uhhh just subract 100 - 21 and yea you should get 79. :)