3 years ago

Match the tables with the direct variation equation. You will not use all options.

Mathematics

1 answer:

Gekata [30.6K]3 years ago

4 0

Answer:

the answer is table d 12 =12+34=4

Step-by-step explanation:

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Which value is equivalent to 4

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3 years ago

Hayden has 7 shells . Elly has 5 fewer shells than Hayden . Beth has 2 shells . How many shells do they have in all?

sleet_krkn [62]

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2 years ago

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 is the realtionship between the value of the digital 4 in the numbers 5,412 and the number 54,123?

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Times 10 400 times ten is 4000

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3 years ago

Read 2 more answers

5x+2y=10; (-2, 9) if -2 is x and 9 is y

Dovator [93]

What are you looking for. slope?

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3 years ago