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maxonik [38]
3 years ago
12

PLEASE PLS HELP THANK YOU x = ___ cm

Mathematics
2 answers:
viva [34]3 years ago
8 0

Answer:

Step-by-step explanation:

Since they are directly proportional:

5cm -> 3cm

40cm -> y

y = 120/5

 = 24cm

2x+10 = 24

2x = 14

x = 7cm

<em>Feel free to mark it as brainliest :D</em>

Snowcat [4.5K]3 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

5/(40+5) = 3/(2x+10+3)

1/9 = 3/(2x+13)

2x+13 = 3×9

2x = 27 - 13

x = 14/2

x = 7

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The equation would be y=2/3x+4

So to finish the equation, you would need the slope and the y-intercept. The y-intercept is where the line hits the y-axis. So it hits the y-axis at (0,4), making the y-intercept 4.

Next find the slope. Do this by picking two points and plugging it into the equation

y2-y1/x2-x1

(0,4) (3,6)

6-4/3-0

2/3

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3 years ago
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If twice a​ number, added to 3 is divided by the number plus 7​, the result is five thirds. Find the number.
Alina [70]

Answer: 26

Step-by-step explanation:

Let the number be n.

Now,

twice a​ number =>> 2n

added to 3 =>> 2n + 3

is divided by the number plus 7 is five thirds =>> (2n + 3) / (n + 7) = 5 / 3

(2n + 3) = (5 / 3) × (n + 7)

3 × (2n + 3) = 5 × (n + 7)

6n+9 = 5n + 35

6n - 5n = 35 - 9

n = 26

5 0
4 years ago
What is the common point between lines y = ½ x + 4 and y = x – 4?
nirvana33 [79]
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Solve the following system of equations algebraically:<br> y = x^2+7x−4 <br> y = −x−4
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y = -x - 4

x² + 7x - 4 = -x - 4
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x² + 8x - 4 = -4
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     x² + 8x = 0
x(x) + x(8) = 0
    x(x + 8) = 0
x = 0  or  x + 8 = 0
                   - 8  - 8
                     x = -8

      y = -x - 4
      y = -0 - 4
      y = 0 - 4
      y = -4
(x, y) = (0, -4)
         or
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The solutions are (0, -4) and (8, -4).
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Total height of the cake and the candles is 17.1 cm

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Total height = 11.7 + 5.4 = 17.1 cm

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4 years ago
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