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Ksenya-84 [330]
2 years ago
15

Please help and serious answers only!

Mathematics
2 answers:
solong [7]2 years ago
8 0

Answede45

Step-by-step explanation:

ANEK [815]2 years ago
8 0
Answer:45
Hope this helps
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Answer:

The answers are that the x-coordinate is 3, the y-coordinate is 4 and it is in quadrant I

Step-by-step explanation:

To find these answers, start by solving the system. We can do this by multiplying the second equation by 2 and adding them together.

8x + 6y = 48

4x - 6y = -12

-------------------

12x = 36

x = 3

Next, find the y value by plugging in the x value to either equation and solving.

2x - 3y = -6

2(3) - 3y = -6

6 - 3y = -6

-3y = -12

y = 4

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3 years ago
Simplify the algebraic expression <br> (10x2 + 11y) - (3x2 + y)
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Step-by-step explanation:

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The president of a company wants to know about how many of the office chairs in the building need to be replaced. Which sampling
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3 0
3 years ago
A consultant has three sources of income—from teaching short courses, from selling computer software, and from advising on proje
Amanda [17]

Answer:

Mean = $79,000

Standard deviation = $25,000

Step-by-step explanation:

Data provided in the question:

Expected annual incomes:

From teaching short courses = $7,000

From selling computer software = $22,000

From advising on projects = $50,000

Standard deviation:

teaching short courses = $3,000

selling computer software = $4,000

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therefore,

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or

Mean = $7,000 + $22,000 + $50,000

or

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also,

Standard deviation = ∑(standard deviation)

or

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3 years ago
A rectangle is divided into 4 equal rows with 4 squares in each row. Mark says 1 square is 1/4
victus00 [196]

Answer:

A(s) = 1/16 square units

Step-by-step explanation:

Neither of them are correct

If we have a rectangle,  and divide  into 4 equals rows    ( by means of three horizontal lines ) we will get 4 rectangles each of which have 1/4 of total area. If after that we get 4 squares in each row the area of each of these squares is 1/4 of the area we got when dividing the rectangle with our three lines of the first case, therefore the area of each final square is:

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A(s) = 1/16 square units

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