53.41 is the answer to this
Answer:
0.0288 or 2.88%
Step-by-step explanation:
(a) So the probability of winning 1 dinner-for-two prize out of 521 possible cookies, knowing that Lisa bought 15 cookies is the probability that fortune cookie falls into the 15 out of 521 possible cookies, which is:
15 / 521 = 0.0288 or 2.88%
The first statement comes about because
a could be (say) 5
b could be (say) 6
Then c would be square root of 25 + 36 = 61 which is irrational.
I'm not sure of the wording of the second one. It reads like (5 + 6)^2 = 121 the two rationals added together make a rational number in my example. So I think that part is wrong. the second part is correct. For example sqrt(5) + sqrt(6) doesn't produce anything that is rational.
It doesn't have to. pi^2 + [cube root(10)]^2 does not produce anything rational and that is certainly not a perfect square. My first example shows that as well
I think the last one might be true.
Answer:
-5(8p - 2) - 5p = 10 + 5p
=> -40p + 10 - 5p = 10+ 5p
=> -40p - 5p -5p = 10 -10
=> -50p = 0
=> p = 0/(-50)
=> 0
Hope it helps.......