The probability of a Maryland teenager owning an iPhone is 0.40 , of owning a Samsung is 0.71, and of owning both is 0.26. If a Maryland teenager is chosen at random, what is the probability that the teenager owns an IPhone or a Samsung? A:0.85
B:0.40
C:1.11

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

1 1/7 hope i

step-by-step explanation:

8/7 = (1 * 7 + 1) / 7 = 1 + 1/7 = 1 1/7

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation: