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3 years ago

Find measure of side AB round to nearest tenth

Mathematics

1 answer:

vova2212 [387]3 years ago

8 0

Use:

$|AB|^2=|AC|^2+|BC|^2-2|AC||BC|\cos(m\angle ACB)$

We have:

$|AC|=13;\ |BC|=29;\ m\angle ACB=41^o$

$\cos41^o\approx0.7547$

substitute:

$|AB|^2=13^2+29^6-2\cdot13\cdot29\cdot0.7547\\\\|AB|^2=440.9562\\\\|AB|\approx21$

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RSB [31]

You know the following information:

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$3,000,962,245$

Then, to estimate the sum (the total amount of money the Software Company earned in those two years, you can round the numbers to the nearest billion.

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You need to look at the digit located in the Hundred millions place. Notice that this is:

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Then, since:

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You need can't round up. Then:

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Now, having:

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You can identify that the digit in the Hundred millions place is

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1 year ago

Find the coordinates of the point (x,y,z)(x,y,z) on the plane z=2x+3y+3z=2x+3y+3 which is closest to the origin.

Ainat [17]

The vector equation of the line through the origin perpendicular to the plane is
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3 years ago