Helpppppp me pleaseeeeeee!!!!!!!!

Mathematics

1 answer:

Nimfa-mama [501]3 years ago

3 0

Answer:

Step-by-step explanation:

think of the flight of a small rocket.. what does it seem like the parabola would look like? down means it looks like a cup or glass , upside down , up mean a cup or glass right side up.

when t = 0 the rocket is at 25, so that's the initial height

it's velocity is initially 200 m/s

put equation from std. form to vertex form

y = a $x^{2}$ + bx +c => y = a(x - h ) ^2 + k

h = -4.9 $t^{2}$ + 200t + 25 =>h = -4.9(t - 20.41)^2 + 2,065.82

(h,k) = (20.41 , 2065.82)

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I'll give a practice problem to help explain it a bit better.

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3 years ago

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zaharov [31]

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3 years ago

1. what is the area of the board shown on the scale drawing? explain how you found the area.2. how can Adam use the scale factor

bixtya [17]

Answer:

1. 1800 square cm.

2. See below

3. 45000 square cm.

Explanation:

Part 1

The dimensions of the drawing are 36cm by 50cm.

$\begin{gathered} \text{The area of the board}=36\times50 \\ =1800\operatorname{cm}^2 \end{gathered}$

Part 2

Given a scale factor, k

If the area of the scale drawing is A; then we can find the area of the actual board by multiplying the area of the scale drawing by the square of k.

Part 3