2 years ago

-2/3 divided by -4/9

Mathematics

1 answer:

Anna35 [415]2 years ago

4 0

Answer: 1.5

Step-by-step explanation:

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The answer to the question you are looking for is B

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2 years ago

HELPP I‘LL GIVE BRAINLIEST!

TiliK225 [7]

Answer:

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Step-by-step explanation:

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1 year ago

Two sides of a triangle are 8 m and 9 m in length and the angle between them is increasing at a rate of 0.06 rad/s. Find the rat

Lelechka [254]

<h2>Rate at which area is increasing is 1.08 m²/s.</h2>

Step-by-step explanation:

Area of triangle is with side a and b and angle C between them is given by

A = 0.5 ab SinC

Here we need to find how area changes with a and b fixed and C is changing,

$\frac{dA}{dt}=\frac{d}{dt}\left (0.5 absinC\right )\\\\\frac{dA}{dt}=0.5ab\frac{d}{dt}\left (sinC\right )\\\\\frac{dA}{dt}=0.5abcosC\frac{dC}{dt}$

We have

a = 8 m

b = 9 m

$C=\frac{\pi}{3}rad\\\\\frac{dC}{dt}=0.06rad/s$

Substituting

$\frac{dA}{dt}=0.5\times 8\times 9\times cos\left ( \frac{\pi}{3}\right )\times 0.06\\\\\frac{dA}{dt}=1.08m^2/s$

Rate at which area is increasing is 1.08 m²/s.

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2 years ago

The distance between -4,1 and -2,2

Vlad1618 [11]

Answer:

✓32

4✓2

5.66

Step-by-step explanation:

That's the answer. Hope it helps

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2 years ago

A model is 4.2 feet tall, the plywood used to make the model is 0.6 inch thick. How many sheets of plywood to make the model?

nadya68 [22]

Answer=84 sheets

4.2feet
1 foot=12 inches

4.2*12=<span>50.4inches

50.4/0.6=</span><span>84 sheets</span>

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2 years ago