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Pie
4 years ago
9

And could someone please help me with this one please

Mathematics
1 answer:
Goshia [24]4 years ago
8 0

Answer:

C

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

here (h, k) = (5, 2), thus

y = a(x - 5)² + 2

To find a substitute (4, - 3) into the equation

- 3 = a + 2 ⇒ a = - 3 - 2 = - 5

y = - 5(x - 5)² + 2 ← in vertex form

Expand (x - 5)² and distribute by - 5

y = - 5(x² - 10x + 25) + 2

  = - 5x² + 50x - 125 + 2

  = - 5x² + 50x - 123 ← in standard form

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jolli1 [7]

Answer:

  4 sides

Step-by-step explanation:

A lot of math is about pattern matching. Here, you're asked if sides are the same length (one side matches another), if there are right angles (square corners), and if the number of angles or sides is 4.

You might make the observations ...

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The only feature in common is "4 sides."

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2 years ago
Please HELP me. I've been trying to solve this question for an hour but I didn't find any answer.
Marta_Voda [28]
Volume of a cylinder is formulated as: π·r²h
Surface area of a cylinder is formulated as: 2π·rh + 2π·r²

So, for a:
Volume = π·5²·12 = π·25·12 = 300π
Surface area = 2π·5·12 + 2π·5² = 120π + 50π = 170π

And it's essentially the same process for the other questions.
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Alex73 [517]

Answer:

25 in and 9 cm

Step-by-step explanation:

Using Pythagoras' identity

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let x be the missing side

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x² = 7² + 24² = 49 + 576 = 625 ( take square root of both sides )

x = \sqrt{625} = 25

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Dahasolnce [82]

Answer:

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Step-by-step explanation:

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3 years ago
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