Aiko is finding the sum (4 + 5i) + (–3 + 7i). She rewrites the sum as (–3 + 7)i + (4 + 5)i. Which statement explains the mathema
2 answers:
Answer:
Given the expression:
Aiko rewrites the equation by factoring out the from the expression and this wrote it as,
but this is wrong because is an imaginary number which is with a number 5 and 7.
Therefore, Aiko cannot factor out the because it is not present in both numbers -3 and 4
She could rewrote it as
So, she incorrectly used the distributive property by combining the real number and the coefficient of the imaginary part.
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All these cases represent experiments whose outcomes are all equaly likely. What we mean is that the cards have all the same probability of being dealt (1/52), and all the spaces of the spinner have the same probability of being landed into (1/5).
These probabilities are computed as 1 over all the possible outcomes.
(a) If you want a heart card and a five, you want the 5 of hearts. So, only one card would satisfy your request, and thus you have probability 1/52 of dealing the 5 of hearts.
(b) There are four 10s and four Jacks in the deck, so 8 cards satisfy your request. With probability 8/52, you'll be dealt a Jack or a 10.
(c) You have two "good" outcomes out of 5, so your probability is 2/5.