3 years ago

Please helppp meee I need it done noww

Mathematics

1 answer:

bearhunter [10]3 years ago

6 0

Answer:

7/2

Step-by-step explanation:

3 wholes is equal to 6 halves plus a half equals 7 halves

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3 years ago

If sec theta = - √30 / 3, find cos theta.<br> if sin(-theta) = -0.97, find cos (π/2 - theta).

Cloud [144]

Step-by-step explanation:

$\cos \theta = \frac{1}{ \sec\theta } = - \frac{3}{ \sqrt{30} } = - \frac{3 \sqrt{30} }{30} = - \frac{ \sqrt{30} }{10}$

$\cos( \frac{\pi}{2} - \theta )= \cos \frac{\pi}{2} \cos \theta + \sin \frac{\pi}{2} \sin \theta$

Note that

$\sin( - \theta) = - \sin \theta$

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Therefore,

$\cos( \frac{\pi}{2} - \theta ) = 0.97$

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3 years ago

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Soloha48 [4]

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3 years ago

Is the word addition a collective, abstract or concrete noun?

Semenov [28]

Answer:

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2 years ago

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boyakko [2]

Answer:

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Step-by-step explanation:

We wanna have the same amount on both sides

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4x+3=7

4x=7-3

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We can check by substituting one

7=7

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3 years ago