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Harman [31]
3 years ago
10

If f(x) = 16x - 30 and g(x) = 14x - 6, for which value of x does (f - g)(x) = 0?

Mathematics
1 answer:
Brut [27]3 years ago
8 0

I dont know i want your money


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Solve the following equation simultaneously 1/x-5/y=7, 2/x+1/y=3​
maria [59]

Answer:

  (x, y) = (1/2, -1)

Step-by-step explanation:

Subtracting twice the first equation from the second gives ...

  (2/x +1/y) -2(1/x -5/y) = (3) -2(7)

  11/y = -11 . . . . simplify

  y = -1 . . . . . . . multiply by y/-11

Using the second equation, we can find x:

  2/x +1/-1 = 3

  2/x = 4 . . . . . . . add 1

  x = 1/2 . . . . . . . multiply by x/4

The solution is (x, y) = (1/2, -1).

_____

<em>Additional comment</em>

If you clear fractions by multiplying each equation by xy, the problem becomes one of solving simultaneous 2nd-degree equations. It is much easier to consider this a system of linear equations, where the variable is 1/x or 1/y. Solving for the values of those gives you the values of x and y.

A graph of the original equations gives you an extraneous solution of (x, y) = (0, 0) along with the real solution (x, y) = (0.5, -1).

6 0
2 years ago
What is the value of the 5 in the number 356,409?​
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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Your answer is c, an obtuse triangle because if the two side lengths are the same length along with a longer side, it become obtuse
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