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castortr0y [4]
3 years ago
12

Let n be the middle number of three consecutive integers. Write an expression for the sum of these integers.

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0
(n - 1) + n + (n +1) = 3n
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PLEASE HELP!!!
Afina-wow [57]

Answer:

I think you mispelled something there... if the system of equation involves 2x-3, the answer is x = 6/5 and y = -27/5

Step-by-step explanation:

- 7x+3 = -2x-3

1. move -3 to the other side (so add it on both sides)

  • 7x+3+3 = -2x
  • 7x+6 = -2x

2. move 7x to the other side (in order to combine like terms)

  • 6 = 7x -2x
  • 6= 5x

3. Solve for x (Divide 5 by both systems)

  • 6/5 = x

4. Plug x into one of the equations to find y

  • 2 * (6/5) -3 = -27/5
  • y = -27/5
5 0
3 years ago
8.
lys-0071 [83]

Answer:

A. y = -⅓x + 3

Step-by-step explanation:

Find the equation of the graph bin slope-intercept form, y = mx + b. Where,

m = slope = ∆y/∆x

Using two points on the line, (0, 3) and (3, 2),

Slope (m) = (2 - 3)/(3 - 0) = -1/3

m = -⅓

b = y-intercept = 3 (the y-coordinate of the point where the line crosses the y-axis)

✅To write the equation, substitute m = -⅓ and b = 3 into y = mx + b

Thus:

y = -⅓x + 3

3 0
3 years ago
Tell me the composite number greater than 20<br>​
vitfil [10]
21 is a composite number and the closest number to 20
7 0
3 years ago
Read 2 more answers
Solve for x: 3(-5x + 1) + 7 = 2 - 4(x – 3)
Cloud [144]

Answer:

x is -4/11 or -0.36

Step-by-step explanation:

5 0
3 years ago
the perimeter of a right angled triangle is 60 cm and its area is 120cm².find the lengths of the triangle.​
vredina [299]

Step-by-step explanation:

The area of triangle given as 120 cm2

Area of Triangle = 1/2 x b x h = 120

therefore bxh = 240

240 can be factorized as 10 x 24

The perimeter of the triangle is given as 60

so the other side has to be 26 cm

As this is a right angle triangle it should satisfy pythagoras theorem

(10)2 + (24)2 = (26)2

100+576 =676

Hence the sides of the triangle are 10 cm, 24 cm and 26 cm

3 0
3 years ago
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