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sergij07 [2.7K]
1 year ago
10

PLEASE ANSWER THIS!!!!!!!!

Mathematics
1 answer:
sergiy2304 [10]1 year ago
3 0

9514 1404 393

Answer:

  (a)  x - y + 1 = 0

Step-by-step explanation:

One way to address multiple-choice questions is to try the answers to see what works.

For the lower left point (1, 2), the answer choices shown give ...

  x -y +1 = 1 -2 +1 = 0 . . . . . equation works

  -x -y +1 = -1 -2 +1 = -2 . . . doesn't work

  y -x +1 = 2 -1 +1 = 2 . . . . . doesn't work

The appropriate choice is ...

  x - y + 1 = 0

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In a statewide soccer competition, 36 games were played. Each team participating in the competition played once with every other
Tomtit [17]

Answer:

9 teams

Step-by-step explanation:

If the total games played was 36 and no team played each other twice, we need to ensure there isn't any double counting.

36 = (n-1) + (n-2) + (n-3) ... + (n-(n-1))

using this knowledge, we can then count up:

1+2+3+4+5+6+7+8 = 36

If our highest number is 8, then we know there must be 9 teams, because no team can play themselves.

8 0
2 years ago
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A study was conducted to determine the mean birth weight of a certain breed of kittens. Consider the birth weights of kittens to
kipiarov [429]
3.56 +/- 0.011 = ( 3.549, 3.571). This is the answer.
7 0
1 year ago
The slope of the line below is -5/7 Write the point-slope equation of the line using the coordinates of the labeled point.
Vesna [10]

Answer:

The answer is C) y - 2 = -5/7(x - 6)

Step-by-step explanation:

Since we have the slope (-5/7) and a point (6, 2), we can just input those in for m and (x1, y1) in point-slope form.

y - y1 = m(x - x1)

y - 2 = -5/7(x - 6)

4 0
2 years ago
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An upscale resort has built its circular swimming pool around a central area that contains a restaurant. The central area is a r
Elena L [17]
The problem is modelled in the diagram below 

Question 1:
The largest area of the pool is half of the area of the circle

Area of circle = πr², where r is the radius given by 1/2 of the diameter
Area of circle = π(60)² = 11309.73355 feet

Area of half of the circle is 11309.73355/2 = 5654.866... ≈ 5654.87 feet (2dp)

Question b:

The area of the pool is the area of the circle subtracts the area of the triangle.

The area of the circle is 11309.73²

The area of the triangle is 1/2 (60×103.92) = 3117.6 feet²

The area of the pool is 11309.73 - 3117.6 = 7922.13 feet²

The volume of the pool = 7922.13 × 4 = 31688.52 feet³

Note: there isn't any information on the fish tank part so the answer above is assumed for the whole pool.

6 0
1 year ago
The following table shows the salary of 7 people in an office last year.
kotegsom [21]

Answer:

a.  £24,714.29

b. £16,833.33

Step-by-step explanation:

The calculation of mean income is given below:-

Mean income = Total addition of salaries ÷ Number of workers

= £9,500 + £25,000 + £13,250 + £72,000 + £12,750 + £29,500 + £11,000

= £173,000 ÷ 7

= £24,714.29

Now,

the Mean income excluding Deva's salary:

= Formula of Mean income

= Total addition of salaries excluding Deva salary ÷ Number of workers

= (£9,500 + £25,000 + £13,250 + £12,750 + £29,500 + £11,000) ÷ 6

= £101,000 ÷ 6

= £16,833.33

7 0
1 year ago
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