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Zolol [24]
3 years ago
13

What is the solution to the following system of linear equations?

Mathematics
1 answer:
djverab [1.8K]3 years ago
7 0

Answer:

There is no solution.

Step-by-step explanation:

4y − 36 = −12x

3x + y = −9

Add 12x and 36 to both sides of the first equation.

12x + 4y = 36

3x + y = -9

Multiply both sides of the second equation by -4.

12x + 4y = 36

-12x - 4y = 36

Add the two equations.

0 = 72

Since 0 = 72 is a false statement, this system of equations has no solution.

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Let event Aequalssubject is telling the truth and event Bequalspolygraph test indicates that the subject is lying. Use your own
pochemuha

Answer:

C is the right answer

Step-by-step explanation:

In this case we have the events

<em>A: The subject is telling the truth. </em>

<em>B: The the polygraph indicates that the subject is lying </em>

Recall that P(B|A) is defined as the probability that the event B occurs given that the event has already occurred, and is equals to P(B∩A)/P(A).

So, with the events we have defined, <em>P(B|A) indicates the probability that the polygraph indicates lying given that the subject is actually telling the truth. </em>

The most suitable answer is thus, C

3 0
3 years ago
The length of a window in Andrew’s house is 4 feet and its height is 3 feet. What is the diagonal length of the window?
NikAS [45]
The solution for this problem is:
To get the diagonal length of a square,  multiply the length of one side by the square root of 2:If the length of one side is x.
length of diagonal = x √2
length of a diagonal = 4√2
length of a diagonal = 5.6569 feet
4 0
3 years ago
The numbers 7, 11, 12, 13, 14, 18, 21, 23, 27, and 29 are written on separate cards, and the cards are placed on a table with th
kaheart [24]

Answer:

3/10

Step-by-step explanation:

<em>Step 1 : Write the formula of calculating probability</em>

Probability = Number of favourable outcomes/Number of total outcomes

<em>Step 2 : Identify the favourable (requires) outcomes and the total outcomes</em>

  • Total outcomes are the total cards that are placed on the table = 10 cards
  • The favourable outcomes are the number of cards that have an even number on them.

       12, 14, 18 = 3 cards

<em>Step 3 : Substitute the values in the formula</em>

Probability = Number of favourable outcomes/Number of total outcomes

Probability = 3/10

Therefore, the probability of picking a card with and even number is 3/10.

!!

7 0
3 years ago
The price of a pair of jeans at a store increased by 25% to $40. Find the price of the pair of jeans before the increase.
VARVARA [1.3K]
We can display this as an algebraic equation:

x * 1.25 = 40

Now divide by 1.25

x = 40/1.25
x = 32

Hope this helps!
6 0
4 years ago
Simplify -3 (2m - 7)
Nookie1986 [14]
-3(2m-7)
Open parenthesis and distribute
-6m + 21
You're done
7 0
3 years ago
Read 2 more answers
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