2 years ago

PLSS HELP!!

Mathematics

1 answer:

bulgar [2K]2 years ago

3 0

Answer:

c 70

Step-by-step explanation:

supplementary means they equal 180

180 - 110 = 70

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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]

Answer:0.175 m/s

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

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

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

Differentiating both sides we get

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

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c=11.53 m

substituting values we get

$\frac{\sqrt{3}}{2}\times 0.02=\frac{11.53}{9\times 13}\times \frac{\mathrm{d} c}{\mathrm{d} t}$

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3 years ago

it cost $1.25 to mail a packege that weighs up to 4 ounces each additional ounce costs $0.65 how much in dollera and cents does

NISA [10]

10 - 4 = 6ounces

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because use quarters as and example

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3 years ago

The booster club picked 1,370 apples. The plan to sell apples with 15 apples in each bag. Can they make at least 100 bags? How d

lyudmila [28]

Answer:

I know this because of you divide 1,370 by 15 you will end up with a number close to 100.

Step-by-step explanation:

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