3 years ago

Find the arc length. Round to the nearest tenth. 5 m 2 pi over 3

Mathematics

1 answer:

ohaa [14]3 years ago

6 0

Answer:

Helppppppppppp meeeeeee

Step-by-step explanation:

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Which is a correct verbal expression for 9+ n?

Elis [28]

Nine plus a unknown number equals unknown.

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3 years ago

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A 5-meter ladder is leaning against the side of a house. The foot of the ladder is pulled away from the house at a rate of 0.4 m

Flura [38]

<h2>The top of the ladder is descending at 0.3 m/s.</h2>

Step-by-step explanation:

By Pythagoras theorem we know that

Hypotenuse² = Base² + Perpendicular²

h² = b² + p²

We have for ladder

h = 5 m

b = 3 m

5² = 3² + p²

p = 4 m

$\frac{db}{dt}=0.4m/s\\\\\frac{dh}{dt}=0$

Differentiating h² = b² + p² with respect to time

$2h\times \frac{dh}{dt}=2b\times \frac{db}{dt}+2p\times \frac{dp}{dt}\\\\5\times 0=3\times 0.4+4\times \frac{dp}{dt}\\\\\frac{dp}{dt}=-0.3m/s$

The top of the ladder is descending at 0.3 m/s.

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3 years ago

50 points Type the correct answer I’m the box

Nonamiya [84]

I only see a black image, can you resend the image? or type it out here

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3 years ago

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I feel like it’s either answer 2 or 4. i just don’t understand the -9 part

harina [27]

Answer:

n < 27

Step-by-step explanation:

let the number be n

$\frac{1}{3} n - 3 < 6 \\ add \: 3 \: to \: both \: sides \\ \frac{1}{3}n - 3 + 3 < 6 + 3 \\ \frac{1}{3} n < \\ 9 \\ multiply \: both \: sides \: by \: 3 \\ \frac{1}{3} n \times 3< 9 \times 3 \\ n < 27$

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3 years ago

Please help answer below

zhannawk [14.2K]

Step-by-step explanation:

there you go mya hope this helped

7 0

3 years ago