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2 years ago

Help please I’ll give extra points

Mathematics

1 answer:

Masteriza [31]2 years ago

7 0

Battery is the answer to your question

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Fudgin [204]

15 tickets in all 5x3

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3 years ago

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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.

4 0

3 years ago

Malik wrote 18 ➗6 = 3. Which problem can he solve using this equation?

ki77a [65]

Answer: Anything for example:

Malik has 6 friend, he wants to equally give them some of the 18 cookies he back earlier that morning. How much will he give each person?

Step-by-step explanation: And the answer will be 3

6 0

2 years ago

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5/4,6/3,2/6 arrange these numbers in order of size.

Lapatulllka [165]

Answer:

6/3 is the biggest ofc =2

Then is 5/4 =1.25

Smallest is 2/6 = 1/3= 0.33

QwQ

Easy peasy

7 0

3 years ago

Which of the following could be the equation for the line of best fit?

tia_tia [17]

your answer is D.

y = 4x - 17

6 0

2 years ago

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