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faust18 [17]
3 years ago
8

If x/0.5 + y/0.2 = 18, where x and y are positive integers, then what is the value of x ?

Mathematics
1 answer:
dem82 [27]3 years ago
7 0
An equation without exponents and two variables, is typically a straight line. All the points on the line with integer coordinates are solutions of the equation. Since x and y have to be positive as well, there aren't that many solutions.

Let's see where the line crosses the x-axis, it is where y=0:

x/0.5 + 0 = 18, so x=9 at the intercept. y=0 there, so this is a point on the line, but not a solution to the question (y was supposed to be positive).

Possible values for x are thus limited to 1,2,3,4,5,6 and 7. You can try them all (ie., solve the equation with them) and see for which x values the y is also positive and integer.

You will find that x=4, y=2 is the only pair that satisfies these conditions.

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gizmo_the_mogwai [7]

Answer:

x = - 8, x = 2

Step-by-step explanation:

Given

f(x) = x² + 6x - 16

To find the x- intercepts equate f(x) to zero, that is

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Equate each factor to zero and solve for x

x + 8 = 0 ⇒ x = - 8

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lana [24]
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The larger balloon has <span> <span> <span> 866.64 </span> </span> </span> cc more water than the small balloon.


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3 years ago
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liraira [26]
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Rounds to $247. 03
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Alexxx [7]

Answer:

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(Gradient = slope)
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