4 years ago

Write an expression to represent eight more than the product of two and a number X

Mathematics

1 answer:

Maru [420]4 years ago

3 0

Answer:

2x+8

hope this helped!!

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3 years ago

Two sides of a triangle have lengths 9 m and 13 m. The angle between them is increasing at a rate of 0.02radians /min. How fast

Olin [163]

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Step-by-step explanation:

Given

Two sides of length 9 and 13 m

angle between them is increasing at an angle of 0.02 rad/min

rate of increasing of third at $\theta =\frac{\pi }{3}$

let a=9

b=13

c=unknown side

Now using cos rule of triangle

$cos\theta =\frac{a^2+b^2-c^2}{2ab}$

$cos\theta =\frac{a^2+b^2}{2ab}-\frac{c^2}{2ab}$

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$-\sin \theta \times \frac{\mathrm{d} \theta }{\mathrm{d} t}=0-2\frac{c}{2ab}\times \frac{\mathrm{d} c}{\mathrm{d} t}$

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substituting values we get

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3 years ago