3 years ago

Please help as I can’t figure this out :(

1 answer:

4 0

Arc DE is equal to the total number of degrees (360) minus the other arc lengths.
Therefore the measure of DE = 360 - (40+30+20+90+110) = 70.

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There will be three pairs of matching sides: one pair 5x7, one pair 5x12 and one pair 12x7. We can compute the are of each side (in pairs) and then add up the total:

$A_{surf}=2\times(l \times w)+2\times(l \times h)+2\times(h \times w)$
$A_{surf}=2\times(5\times7)+2\times(5\times12)+2\times(12\times7)$
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$A_{surf}=358$
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3 years ago

If u = <-7, 6> and v = <-4, 17>, which vector can be added to u + 3v to get the unit vector <1, 0> as the resu

ivann1987 [24]

With u = <-7, 6> and v = <-4, 17>, we have

u + 3v = <-7, 6> + 3 <-4, 17> = <-7, 6> + <-12, 51> = <-19, 57>

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u + 3v + w = <1, 0>

Subtract u + 3v from both sides to get

w = <1, 0> - (u + 3v) = <1, 0> - <-19, 57>

w = <20, -57>

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3 years ago

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KengaRu [80]

Answer:

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3 years ago

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Fiesta28 [93]

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3 years ago