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quester [9]
3 years ago
10

Find the solution to the equations. 3x - y = -4 X + y = 0

Mathematics
2 answers:
adell [148]3 years ago
6 0

Answer:

Both the lines shown by above two equations have same slope = 3 i.e. the lines are parallel to each other i.e. they don't intersect each other hence the given system of linear equations has no solution .

Step-by-step explanation:

Zepler [3.9K]3 years ago
5 0

Answer:

x = -1; y = 1

Step-by-step explanation:

3x - y = -4

x + y = 0

Since you have -y and +y in the two equations, you can add them and eliminate y.

Add the equations.

4x = -4

x = -1

Now substitute -1 for x in the second equation and solve for y.

-1 + y = 0

y = 1

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Tasya [4]

Answer:

0.25 = 25% probability that it will rain today and ruin your picnic

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Cloudy skies

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20% of all days start with clouds in the air

This means that P(A) = 0.2

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50% of 10%. So

P(A \cap B) = 0.5*0.1 = 0.05

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P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.2} = 0.25

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3 0
3 years ago
Can someone answer this question please please help me I really need it if it’s correct I will mark you brainliest .
Ilya [14]

Triangle:

A = 3 x 9 x 1/2 = 13.5

Large rectangle (center):

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Medium rectangle:

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Small rectangle (bottom):

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Figure:

A = 13.5 + 108 + 24 + 8 = 153.5 square feet

Hope this helps! :)

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Step-by-step explanation:

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