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romanna [79]
3 years ago
15

Will mark brainliest please show work

Mathematics
1 answer:
SVEN [57.7K]3 years ago
7 0

Answer:

5/4

Step-by-step explanation:

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How many millimeters are in 27 centimeters? (2 points)
lord [1]
Answer: B) 270 mm

Step-by-Step Explanation:

We know,
1 cm = 10 mm
1mm = 1/10 cm

Therefore,
27 cm = 27 * 10 = 270 mm
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3 years ago
Anybody know this need help??
hichkok12 [17]

Answer:

42 mi

Step-by-step explanation:

To find the perimeter, just add up all the side lengths.

13 + 14 + 15 = 42

<em>Note this is mi and not mi² since this is not area.</em>

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The bottom of a ladder must be placed 2 1/2 feet from the wall. The ladder is 9 feet long How far above ground is the ladder tou
Gnoma [55]

Answer:

Step-by-step explanation:

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What is the equation of a parabola with (4, 6) as its focus and y = 2 as its directrix?
antoniya [11.8K]
So  hmmm if you notice the picture below

bear in mind that, the vertex is "p" distance from the focus, and "p" distance from the directrix

now, the focus is at 4,6 and the directrix below that, meaning the parabola is vertical and opening upwards

and the vertex is half-way between the focus point and the directrix

\bf \textit{parabola vertex form with focus point distance}\\\\&#10;\begin{array}{llll}&#10;(y-{{ k}})^2=4{{ p}}(x-{{ h}}) \\\\&#10;\boxed{(x-{{ h}})^2=4{{ p}}(y-{{ k}})} \\&#10;\end{array}&#10;\qquad &#10;\begin{array}{llll}&#10;vertex\ ({{ h}},{{ k}})\\\\&#10;{{ p}}=\textit{distance from vertex to }\\&#10;\qquad \textit{ focus or directrix}&#10;\end{array}\\\\&#10;-----------------------------\\\\&#10;(x-4)^2=4(2)(y-4)\implies (x-4)^2=8(y-4)&#10;\\\\\\&#10;\cfrac{(x-4)^2}{8}=y-4\implies \cfrac{1}{8}(x-4)^2+4=y

4 0
4 years ago
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