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3 years ago

Can you help me plzzzzzzz

Mathematics

2 answers:

Umnica [9.8K]3 years ago

6 0

Answer:

Step-by-step explanation:

11^2 x 3.14 x 10 = 3799.4

egoroff_w [7]3 years ago

4 0

Answer:

I believe it is A. 3799.4

Step-by-step explanation:

I used a formula from online and it gave me 3801.33 which is closet to A. 3799.4

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Rewrite the expression from part B by distributing -1 from each of the negative numbers.

WINSTONCH [101]

Answer:

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Step-by-step explanation:

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3 years ago

Please help!! x = 2 - 3 cos t, y = 1 + 4 sin t in rectangular form?<br><br> thank you! :)

sukhopar [10]

Answer:

$\frac{(x-2)^2}{9}+\frac{(y-1)^2}{16}=1$

Step-by-step explanation:

$x=2-3\cos(t)$

$y=1+4\sin(t)$

Let's solve for $\cos(t)$ in the first equation and then solve for $\sin(t)$ in the second equation.

I will then use the following identity to get right of the parameter, $t$ :

$\cos^2(t)+\sin^2(t)=1$ (Pythagorean Identity).

Let's begin with $x=2-3\cos(t)$ .

Subtract 2 on both sides:

$x-2=-3\cos(t)$

Divide both sides by -3:

$\frac{x-2}{-3}=\cos(t)$

Now time for the second equation, $y=1+4\sin(t)$ .

Subtract 1 on both sides:

$y-1=4\sin(t)$

Divide both sides by 4:

$\frac{y-1}{4}=\sin(t)$

Now let's plug it into our Pythagorean Identity:

$\cos^2(t)+\sin^2(t)=1$

$\frac{x-2}{-3})^2+(\frac{y-1}{4})^2=1$

$\frac{(x-2)^2}{(-3)^2}+\frac{(y-1)^2}{4^2}=1$

$\frac{(x-2)^2}{9}+\frac{(y-1)^2}{16}=1$

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3 years ago

Read 2 more answers

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GenaCL600 [577]

Answer:

3:6

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Step-by-step explanation:

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