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3 years ago

Ok some one ask me what 20 + 20 - 20 is said its 20 e didnt belive me i know thats the right anser

Mathematics

1 answer:

postnew [5]3 years ago

6 0

Answer:

it is because 20 + 20 is 40 and then 40 - 20 = 20

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PLZ HELP ASAP INSCRIBED QUADRILATERALS

Natasha2012 [34]

Opposite angles of an inscribed quadrilateral are supplementary, that is, they add up to 180 degrees. For this quadrilateral, Q + A = 180, and similarly, U + D = 180. Since we are given U = 106, therefore:
106 + D = 180
D = 74 degrees.

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3 years ago

Consider the helix r(t)=⟨cos(7t),sin(7t),−1t⟩. Compute, at t=π6:

gogolik [260]

Consider the helix below:

$r(t)= (\cos(7t), \sin(7t), -t)$

We have to determine the value of helix at t = $\frac{\pi}{6}$

So, $r(\frac{\pi}{6})$

= $(\cos(\frac{7 \pi}{6}), \sin(\frac{7 \pi}{6}), -\frac{\pi}{6})$

Consider $\cos(\frac{7 \pi}{6}) = \cos(\pi + \frac{\pi}{6}) = - \cos (\frac{\pi}{6}) = \frac{-\sqrt3}{2}$

Consider $\sin(\frac{7 \pi}{6}) = \sin(\pi + \frac{\pi}{6}) = - \sin (\frac{\pi}{6}) = \frac{-1}{2}$

So, the value of helix $r(\frac{\pi}{6}) = (\frac{-\sqrt3}{2}, \frac{-1}{2}, \frac{- \pi}{6})$ .

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3 years ago

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igomit [66]

Answer:

Step-by-step explanation:

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3 years ago

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ANSWER QUICK GIVING BRAINIEST!

Alenkinab [10]

Answer: yes because you wouldn’t be able to multiply them and they wouldn’t bothe be fractions.

Step-by-step explanation:

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3 years ago

I NEED HELP ASAP!!!

BlackZzzverrR [31]

Answer:

The number that would go in the blank to get a perfect square trinomial is 18

Step-by-step explanation:

The middle term can always be found by taking twice of the square root of the final term.

2 * √81 = 18

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3 years ago