100-45+22= 77
you will have 77 percent of battery on your phone
Answer:
Both aren't proportional
Step-by-step explanation:
Whenever they are simplified they don't add up to the same fraction
Sorry for my bad hand writing, hopefully you can still read it :)
Answer:
Twelve times a number decreased by 45 is at most 117.
Step-by-step explanation:
Answer:
-cos(2A)
Step-by-step explanation:
We know that (a+b) (a-b) = a^2-b^2
So it means we can simplify to sin^2(A)-cos^2(A) and we know cos^2(A) - sin^2(A) = cos(2A) but we will just multiply by -1 and we get - cos(2A)
Answer:
16
Step-by-step explanation:
Use a special rule: BD^2=AD*DC (the squared height in right triangle drawn to hypotenuse is equal to the product of the parts of hypotenuse on which height divides the hypotenuse) 12^2=9*DC
DC=16
