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frez [133]
3 years ago
6

A,b,c, or d??? Need help someone

Mathematics
1 answer:
storchak [24]3 years ago
5 0

Answer:

the answer is A

Step-by-step explanation:

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What are the solutions to the system of equations?<br><br><br> (_____ , 2) and ( _____ , _____ )
alexandr1967 [171]

Answer:

  (1, 2) and (-1, -2)

Step-by-step explanation:

Since y = 2x, the first blank tells you

  2x = 2

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Since the variables are squared, a negative solution is as good as a positive solution, so x = -1 and y = -2 will also work.

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3 years ago
What odds should a person give in favor of the following events? (a) A card chosen at random from a 52-card deck is an ace. (b)
Sindrei [870]

Answer:

(a) 7.69%

(b) 25%

(c) 2.78%

Step-by-step explanation:

(a)

In a deck of 52 cards there are 4 aces.

The odds in favor or the probability of selecting an ace is:

P(Ace) = \frac{Number\ of\ aces}{Number\ of\ cards\ in\ total}\\ =\frac{4}{52}\\ =0.076923\\\approx7.69\%

Thus, the probability of selecting an ace from a random deck of 562 cards is 7.69%.

(b)

The outcomes of each toss of a coin is independent of the other, since the result of the previous toss does not affect the result of the current toss.

The probability that both the tosses will end up in heads is:

P(2\ Heads)=P(1^{st}\ Head)\times P(2^{nd}\ Head)\\=\frac{1}{2}\times \frac{1}{2}\\ =\frac{1}{4}\\ =0.25\ or\ 25\%\\

Thus, the probability that both the tosses will end up in heads is 25%.

(c)

The sample space of two dice consists of 36 outcomes in total.

Out of these 36 outcomes there is only 1 Boxcar, i.e. two sixes.

The probability of a boxcar when two dice are rolled is:

P(Boxcar)=\frac{Favorable\ outcomes}{Total\ no.\ of\ outcomes}\\= \frac{1}{36}\\ =0.027777\\\approx2.78\%

Thus, the probability of a boxcar when two dice are rolled is 2.78%.

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3 years ago
Picture attached multiple choice :3
nikklg [1K]

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2 years ago
In the system of equations below, which variable would it be easiest to solve for?
Maru [420]

Answer:

<h3>     The first: The easiest to solve for is x in the first equation.</h3>

Step-by-step explanation:

To get x from first equation  you just need to subtract 4y from both sides.

The rest of variables needs two operations to get variable - subtracting and then dividing.

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2 years ago
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