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Dimas [21]
3 years ago
6

Write and solve a system of equations that represents each situation.

Mathematics
1 answer:
kotegsom [21]3 years ago
4 0
(7+x)+x=15
I did trial and error to get x=4.
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What's substitution for:<br> X=y-7<br> X+8y=2
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Can someone show me hwo to do this so that i know how to do this please
spin [16.1K]

Answer:

y = -2x - 2

Step-by-step explanation:

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1 year ago
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An elevator is traveling underground at a constant rate. The equation y= -2x - 10 can be used to represent this situation, where
professor190 [17]

4 is correct

reason is because the number next to x is the constant number and the end number is where you started

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3 years ago
Is 6.56556555 a rational or irrational number
lord [1]

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yes

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if it is a terminating decimal(a decimal that ends) it will be rational

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3 years ago
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Ff is a trigonometric function of the form f(x)=a\sin(bx+c)+df(x)=asin(bx+c)+df, left parenthesis, x, right parenthesis, equals,
andriy [413]

The <em>trigonometric</em> function that represents the curve seen in the picture is f(x) = 4.5 · sin (π · x / 2 - π) - 6.5.

<h3>How to derive a sinusoidal expression</h3>

In this problem we need to find a <em>sinusoidal</em> expression that models the curve seen in the picture. The most typical <em>sinusoidal</em> model is described below:

f(x) = a · sin (b · x + c) + d    (1)

Where:

  • a - Amplitude
  • b - Angular frequency
  • c - Angular phase
  • d - Vertical midpoint

Now we proceed to find the value of each variable:

Amplitude

a = - 2 - (-6.5)

a = 4.5

Angular frequency

b = 2π / T, where T is the period.

0.25 · T = 4 - 3

T = 4

b = 2π / 4

b = π / 2

Midpoint

d = - 6.5

Angular phase

- 2 = 4.5 · sin (π · 4/2 + c) - 6.5

4.5 = 4.5 · sin (π · 4/2 + c)

1 = sin (2π + c)

π = 2π + c

c = - π

The <em>trigonometric</em> function that represents the curve seen in the picture is f(x) = 4.5 · sin (π · x / 2 - π) - 6.5.

To learn more on trigonometric functions: brainly.com/question/15706158

#SPJ1

3 0
2 years ago
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