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3 years ago

I NEED HELP PLEASE ASAP!!! :)

Mathematics

1 answer:

erik [133]3 years ago

7 0

Answer:

r = 6.4/(1+sin(θ))

Step-by-step explanation:

As the attachment shows, for the given directrix and eccentricity, the equation is ...

$r=\dfrac{ed}{1+e\sin{\theta}}\\\\r=\dfrac{1.6\cdot 4}{1+1.6\sin{\theta}}\\\\\boxed{r=\dfrac{6.4}{1+\sin{\theta}}}\qquad\text{matches the 2$^{\text{nd}}$ choice}$

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PLEASE HELP!!!! What is the solution of the equation 3x+2y=45

nevsk [136]

Simplified, it"s y=-3/2x+22.5

8 0

3 years ago

A used car already has 40,000 miles on its odometer. The average owner will drive 12,000 miles per year.

RSB [31]

The function best models the linear relationship is y=12,000x+40,000.

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3 years ago

Y = –2x + 30<br> y = 4x<br> Plz help

kati45 [8]

Answer: $x=5$

Step-by-step explanation:

Step 1:-

Given equations are y=-2 x+30........(1)

another equation is y=4 x ..........(2)

Step 2:-

solving these two equations (1) and (2)

Equating both equations are $4 x = -2 x+30$

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Step 3:-

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5 0

3 years ago

An office equipment store buys highlighter pens boxes at a wholesale price of $15 each. It then marks up the price by 94%, and s

Stells [14]

Answer:

Option (d) is correct.

Step-by-step explanation:

Given that,

The wholesale price of a pen is $15.

It then marks up the price by 94%.

Its marked price is equal to 94% of $15. So,

$\text{MP}=\dfrac{94}{100}\times \$15\\\\\text{MP}=\$14.1$

Selling price of the highlighter pen is equal to the sum of marked price and the wholesale price.

SP = $14.1+$15

SP = $29.1

Hence, the marked price is $14.1 and the selling price is $29.1

3 0

3 years ago

What is the equation of a circle whose center at (-5, -2) and radius is 2?

aliya0001 [1]

The equation of a circle whose centre ( $-5,-2$ ) and radius $2$ is $x^{2}+y^{2}+10x+4y+25=0$

What is equation of a circle?

A circle is a closed curve drawn from a fixed point called centre of the circle. The distance between the centre of the circle and the arc of the circle is called the radius of the circle.

The equation of a circle with centre $(h, k)$ radius $r$ is