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FinnZ [79.3K]
2 years ago
12

:) Ramesh can complete a piece of work in 10 days. He worked for 4 days and left. If

Mathematics
1 answer:
IRINA_888 [86]2 years ago
3 0

Answer:

jjjjjjjjjjjjjjj

Step-by-step explanation:

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Find the exact value of sin2 theta given sin theta =5/13, 90°<theta <180°
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Now, we know that 90°< θ <180°, that simply means the angle θ is in the II quadrant, where sine is positive and cosine is negative.

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\bf \pm\sqrt{13^2-5^2}=a\implies \pm\sqrt{144}=a\implies \pm 12 =a \implies \stackrel{II~quadrant}{-12=a}&#10;\\\\\\&#10;therefore \qquad cos(\theta )=\cfrac{\stackrel{adjacent}{-12}}{\stackrel{hypotenuse}{13}}&#10;\\\\&#10;-------------------------------\\\\&#10;sin(2\theta )\implies 2sin(\theta )cos(\theta )\implies 2\left(\frac{5}{13}  \right)\left( \frac{-12}{13} \right)\implies -\cfrac{120}{169}
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Prove that A is a subset of B if and only if B complement is a subset of A complement.
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Please read the attached file

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larisa86 [58]

Domain:v\neq0\\\\\dfrac{2}{v}+\dfrac{2}{3}=\dfrac{v-6}{3v}\\\\\dfrac{2\cdot3}{v\cdot3}+\dfrac{2\cdot v}{3\cdot v}=\dfrac{v-6}{3v}\\\\\dfrac{6}{3v}+\dfrac{2v}{3v}=\dfrac{v-6}{3v}\\\\\dfrac{6+2v}{3v}=\dfrac{v-6}{3v}\iff6+2v=v-6\qquad\text{subtract 6 from both sides}\\\\2v=v-12\qquad\text{subtract v from both sides}\\\\\boxed{v=-12}\to\boxed{A.}

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3 years ago
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The sum of a number and 2 is no more than the product of 9 and the same number
densk [106]
Let number = n

the sum of a number and 2: n + 2
is no more than: ≤
the product of 9 and the same number: 9(n)

n + 2 ≤ 9n is your answer


hope this helps
3 0
3 years ago
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