3 years ago

What is the answer to this question?

Mathematics

1 answer:

Tpy6a [65]3 years ago

6 0

Answer:

I'm pretty sure it's C.

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How long will it take an emperor penguin to swim 18 miles if it is swimming 9 mph?

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It will take it 2 hours because if it is swimming 9 miles per hour in two hours it will have swam 18 miles because 9x2=18

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2 years ago

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Step-by-step explanation:

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Solution to equation c-4>2(c)

inna [77]

C-4>2c
minus c from both sides
c-c-4>2c-1c
0-4>c
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3 years ago

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LUCKY_DIMON [66]

What’s the question

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2 years ago

Find an equation in rectangular coordinates for the cylindrical equation r = 2sintheta

frutty [35]

Answer:

$x^2+(y-1)^2=1$

Step-by-step explanation:

The given cylindrical equation is

$r=2\sin \theta$

Multiply both sides by r.

$r^2=2r\sin \theta$ .... (1)

The required formulas are

$x=r\cos \theta,y=r\sin \theta,r^2=x^2+y^2$

Substitute $r\sin \theta =y,r^2=x^2+y^2$ in equation (1).

$x^2+y^2=2y$

$x^2+y^2-2y=0$

Add 1 on both sides.

$x^2+(y^2-2y+1)=1$

$(x-0)^2+(y-1)^2=1^2$ $[\because (a-b)^2=a^2-2ab+b^2]$

It is the equation of a circle centered at (0,1) with radius 1.

Therefore, the equation in rectangular coordinates is $x^2+(y-1)^2=1$ .

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3 years ago