Can someone please explain to me (in steps) how to round decimals to the nearest half? Thanks!!

Mathematics

2 answers:

Strike441 [17]3 years ago

7 0

Find the place value you want (the "rounding digit") and look at the digit just to the right of it.If that digit is less than 5, do not change the rounding digit but drop all digits to the right of it.If that digit is greater than or equal to five, add one to the rounding digit and drop all digits to the right of it.

Alla [95]3 years ago

3 0

You have to draw a number line and put it in order like this and also do it the right way

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Make sure all solutions are in lowest terms. 5/6 • 1/3

stiks02 [169]

1/3=2/6
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2 years ago

An object is launched at 19.6 m/s from a height of 58.8 m. The equation for the height (h) in terms of time (t) is given by h(t)

beks73 [17]

H(t) = Ho +Vot - gt^2/2

Vo = 19.6 m/s
Ho = 58.8 m
g = 9.8 m/s^2

H(t) = 58.8 + 19.6t -9.8t^2/2 = 58.8 + 19.6t - 4.9t^2

Maximun height is at the vertex of the parabole

To find the vertex, first find the roots.

58.8 + 19.6t - 4.9t^2 = 0

Divide by 4.9

12 + 4t - t^2 = 0

Change sign and reorder

t^2 - 4t -12 = 0

Factor

(t - 6)(t + 2) =0 ==> t = 6 and t = -2.

The vertex is in the mid point between both roots

Find H(t) for: t = [6 - 2]/2 =4/2 = 2

Find H(t) for t = 2

H(6) = 58.8 + 19.6(2) - 4.9(2)^2 = 78.4

Answer: the maximum height is 78.4 m

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Answer:

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Step-by-step explanation:

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