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oksano4ka [1.4K]
3 years ago
8

HELP ME PLEASE 10 POINTS ON IT PLEASE HELP ME ​

Mathematics
2 answers:
svetlana [45]3 years ago
7 0

<em>answer = \\ red = 4 \\ blue = 12 \\ green = 16  \\ solution \: \\ let \: the \: ratios \: be \: x \: 3x \: 4x \\ x \ + 3x + 4x = 32 \\ or \: 8x = 32 \\ or \: x =  \frac{32}{8}  \\ x = 4 \\ replacing \: value \\ 3x \\  = 3 \times 4 \\  = 12 \\ 4x \\  = 4 \times \: 4 \\  = 16 \\ hope \: it \: helps...</em>

Svetach [21]3 years ago
5 0

Answer:

4, 12, 16 (respectively)

Step-by-step explanation:

if you need one just comment and ill add one

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Greg runs 3 miles in 28 minutes. At the same rate, how many miles would he run in 42 minutes?
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Answer:

4.5

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Step-by-step explanation:

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What is the equation of the quadratic graph with a focus of (-4,17/8) and a directrix of y=15/8
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So hmm notice the graph below

based on where the focus point is at, and the directrix, then, the parabola is opening upwards, meaning the squared variable is the "x"

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now, keep in mind, the vertex is at coordinates h,k
the vertex itself is half-way between the focus and directrix
the directrix is at y=15/8 and the focus is at y=17/8
so, half-way will then be \bf \cfrac{17}{8}-\cfrac{15}{8}=\cfrac{2}{8}\iff \cfrac{1}{4}

well, so is 1/4 between the focus point and the directrix, half of that is 1/8
so, if you move from the focus point 1/8 down, you'll get the y-coordinate for the vertex, or 1/8 up from the directrix, since the vertex is equidistant to either

what's the "p" distance? well, we just found it, is just 1/8

so, the x-coordinate is obviously -4, get the y-coordinate by 17/8 - 1/8   or 15/8 + 1/8

and plug your values (x-h)² = 4p(y-k)   and then solve for "y", that's the equation of the quadratic

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$47.88 your answer and I am the most important person in the world.
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3 years ago
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soldier1979 [14.2K]

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