3 years ago

Two sides of a rectangle iPhones are five and 5/8 feet long other two sides of 6 1/4 feet long what is the perimeter

Mathematics

1 answer:

hoa [83]3 years ago

6 0

Answer:

Here it is!

Step-by-step explanation:

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Prove algebraically that r = 10/2+2sinTheta is a parabola

Xelga [282]

Answer:

$y = - \frac{ 1 }{10} {x}^{2} + \frac{5}{2}$

Step-by-step explanation:

We want to prove algebraically that:

$r = \frac{10}{2 + 2 \sin \theta}$

is a parabola.

We use the relations

${r}^{2} = {x}^{2} + {y}^{2}$

and

$y = r \sin \theta$

Before we substitute, let us rewrite the equation to get:

$r(2 + 2 \sin \theta) = 10$

$r(1+ \sin \theta) = 5$

Expand :

$r+ r\sin \theta= 5$

We now substitute to get:

$\sqrt{ {x}^{2} + {y}^{2} } + y = 5$

This means that:

$\sqrt{ {x}^{2} + {y}^{2} }=5 - y$

Square:

${x}^{2} + {y}^{2} =(5 - y)^{2}$

Expand:

${x}^{2} + {y}^{2} =25 - 10y + {y}^{2}$

${x}^{2} =25 - 10y$

${x}^{2} - 25 = - 10y$

$y = - \frac{ {x}^{2} }{10} + \frac{5}{2}$

This is a parabola (0,2.5) and turns upside down.

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3 years ago

What’s (2.5,6) dilated by a scale factor of 2?

vodka [1.7K]

Answer:(5,12)

Step-by-step explanation: 2.5 x 2= 5

6 x 2= 12

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2 years ago

Please help:) i need a answer quickkk 10 pointsss

Lady_Fox [76]

Answer:

simplify

Step-by-step explanation:

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2 years ago

The NCAA basketball tournament begins with 64 teams, and after each round, half the teams are eliminated. The number of remainin

Goryan [66]

T divided by 2after each round

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3 years ago

How do you spell 4.10 as a word form

Hoochie [10]

Hello there. ;D

How do you spell 4.10 as a word form
Answer: four and ten hundredths.<span>
</span>

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2 years ago

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