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3 years ago

If x varies directly with y and x = 2.5 when y = 10, funny x when y = 16.

Mathematics

1 answer:

amid [387]3 years ago

3 0

Answer:

Should be 4.0(Not sure tho. my thought process is complicated but to me it makes sense)

Step-by-step explanation:

If y=10 and x =2.5, if y were to = 20, then x would equal 5. so you take that ratio, and say 6 is 3/5's the way to 10, so you also divide 2.5 by 3/5

you get 1.5, you add that to x already and you get 4.0

so if y=16, x should =4.0

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3 years ago

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telo118 [61]

Answer:

$f(x)=-\frac{1}{8}(x-3)^2+3$

Step-by-step explanation:

We want to find the equation of the parabola with a focus of $(3,1)$ and directrix $y=5$ .

Considering the directrix, the quadratic graph must open downwards.

The equation of this parabola is given by the formula,

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The axis of this parabola meets the directrix at $(3,5)$ .

Since the vertex is the midpoint of the focus and the point of intersection of the axis of the parabola and the directrix,

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The equation of the parabola now becomes,

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Also $|p|$ is the distance between the vertex and the directrix.

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This implies that $p=-2\:or\:2$ .

Since the parabola turns downwards,

$p=-2$ .

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This is the same as

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2 years ago

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Hence, our required probability is 0.55.

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3 years ago

I NEED HELP

kogti [31]

-6 = y/5 + 4

Step 1: Subtract 4 from each side of the equation.

Step 2: Multiply each side by 5.

If you don't arrive at the solution y= -50 , then return to Step-1
and repeat the process, being on the lookout for your mistake.

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