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3 years ago

Which ordered pair is the solution to this system of equations?

Mathematics

1 answer:

Elodia [21]3 years ago

8 0

Answer:

(- 3, 5 )

Step-by-step explanation:

Given the 2 equations

x + y = 2 → (1)

5x + y = - 10 → (2)

Subtracting (1) from (2) term by term will eliminate the term in y, that is

(5x - x) + (y - y) = (- 10 - 2)

4x = - 12 ( divide both sides by 4 )

x = - 3

Substitute x = - 3 into either of the 2 equations and solve for y

Substituting into (1)

- 3 + y = 2 ( add 3 to both sides )

y = 5

Solution is (- 3, 5 )

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and 336 ÷ 48 = 7 revolutions of gear A

to match up the arrows.

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4 years ago

What is another what to write 9x 200

Snezhnost [94]

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4 years ago

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1. Consider the hospital emergency room data in Example 2-8. Let A denote the event that a visit is to hospital 4, and let B den

mario62 [17]

Answer:

A = 0.2264

B =0.9681

C = 0.9891

Step-by-step explanation:

The concept of conditional probability is applied here, probability been the likelihood of an event occurring. two events A and B are said to be mutually exclusive is one event precludes the happening of the other event i.e one is dependent on the other one occurring.

Conditional probability on the other hand is the happening of an event taking into consideration that an event had already happened.

Let P(A) and P(B) be the probability of event and B occurring.

P(A and B) is the probability of both A and B = P(A) x P(B)

P(A or B) = is the probability of either A or b = P(A union B)

as such, P(A union B) = P(A) + P(B) - P(A and B).

The steps and appropriate explanation is as shown in the attached file.