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stira [4]
2 years ago
7

Xy=1 in polar coordinates

Mathematics
2 answers:
Marianna [84]2 years ago
8 0
xy=1\iff (r\cos\theta)(r\sin\theta)=r^2\sin\theta\cos\theta=\dfrac12r^2\sin2\theta=1
\implies r^2=2\csc2\theta
\implies r=\sqrt{2\csc2\theta}

where we ignore the second root and use the convention that r>0.
Goshia [24]2 years ago
3 0

Answer:

The answer is r^2 * sin 2(theta) = 2!

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Increase 400litres by 20%
Sati [7]

Answer:

480 Litres

Step-by-step explanation:

Percentage increase = 20% × 400

New value =

400 + Percentage increase =

400 + (20% × 400) =

400 + 20% × 400 =

(1 + 20%) × 400 =

(100% + 20%) × 400 =

120% × 400 =

120 ÷ 100 × 400 =

120 × 400 ÷ 100 =

48,000 ÷ 100 =

480

3 0
2 years ago
Can some one help me. btw the answer is not C.​
Anit [1.1K]

Answer:

A

Step-by-step explanation:

Given

x² + 6x

To complete the square

add ( half the coefficient of the x- term )² to x² + 6x

x² + 6x + (3)²

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3 0
3 years ago
Lia has a dog and a cat. Together, the pets weigh 24 pounds. The dog weighs 2 times as much as the cat.
telo118 [61]

Answer:

The dog weighs 16 pounds, while the cat weighs 8 pounds

Step-by-step explanation:

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d=2c

Substitute the second equation into the first:

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d=24-8=16

Hope this helps!

3 0
3 years ago
Can some one please help me?
n200080 [17]

Answer: C

Step-by-step explanation: basicly all u have to do juss multilpy how many on top with the extra boxes, hope this helpss :)

3 0
2 years ago
Read 2 more answers
Jane has 15 coins in total of $2.18. She has 5 more quarters than nickels, has 3 pennies and dimes. How many quarters, nickels,
fredd [130]
She has 7 quarters two nickels and 3 dimes
8 0
3 years ago
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