Answer:
Step-by-step explanation:
From the information given we can solve for x using the larger triangle
we know that the <em>angle</em> at the top is 45 degrees and the side <em>opposite</em> of it is 35, in other words we need to find the <em>adjacent,</em> or rather, x
Since we have <em>angle</em>, an <em>opposite</em> side, and we need the <em>adjacent</em>. The trig function we need to use is 
, the formula is
we need to rearrange this to solve for the <em>adjacent</em>
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<em>plz mark me brainliest. :)</em>
<span>a.{x | x is a real number such that x^2 = 1}
x^2 = 1 => x = +/- 1
=> {-1, 1} <------ answer
b.{x | x is a positive integer less than 12}
1 ≤ x < 12 => {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} <------ answer
c.{x | x is the square of an integer and x < 100}
x = n^2 < 100 => n^2 - 100 < 0
=> (n - 10) (n + 10) < 0
=> a) n - 10 > 0 and n + 10 < 0 => n > 10 and n < - 10 which is not possible
b) n - 10 < 0 and n + 10 > 0 => n < 10 and n > - 10 => - 10 < n < 10
=> n = { - 9, - 8, - 7, - 6, - 5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
=> x = {0, 1, 4, 9, 16, 25, 36, 49, 64, 81} <---- answer
d.{x | x is an integer such that x^2 = 2}
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x = {∅ } because x is √2 which is not an interger but an irrational number
=> Answer: { ∅ }
Probability of guessing correctly is 1/5
Probability of guessing incorrectly is 4/5
