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3 years ago

find the standard form of the equation of an ellipse that has a major axis of length 6 and fox at (-2,0) and (2,0)

1 answer:

4 0

Let the equation be $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$
because the length of major axis is 6, 2a=6. then a=3, a²=9.
c=2, $a^2-b^2=c^2$ , so $b^2=5$
therefore, the equation is $\frac{x^2}9+\frac{y^2}5=1$

if right please mark me brainliest, thanks.

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A number g multiplied by -8 is at least 1/4

Mashcka [7]

G is -0.04 or greater.

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3 years ago

Read 2 more answers

Please help me with these please.

Charra [1.4K]

6. Answer: y = 5x - 11

<u>Step-by-step explanation:</u>

Parallel means "same slope". y = 5x - 2 is in the form y = mx + b,

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Next, input the point (x₁, y₁ = 2, -1) and slope (m = 5) into the Point-Slope formula:

y - y₁ = m(x - x₁)

y - (-1) = 5(x - 2)

y + 1 = 5x - 10

y = 5x - 11

*******************************************************************

7. Answer: $\bold{y = \dfrac{1}{3}x + 4}$

<u>Step-by-step explanation:</u>

Perpendicular means "opposite reciprocal slope". y = -3x + 7 is in the form y = mx + b, so slope (m) = -3 ⇒ m⊥ = $\frac{1}{3}$

Next, input the point (x₁, y₁ = 3, 5) and slope (m = $\frac{1}{3}$ ) into the Point-Slope formula:

y - y₁ = m(x - x₁)

$y - 5=\dfrac{1}{3}(x - 3)$

$y - 5 =\dfrac{1}{3}x - 1$

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3 years ago

please help me i need to submit my math test on 9:59am please help me i really really need help please

Alex Ar [27]

Answer:

7.1 in

Step-by-step explanation:

use the pythagorean theorem

3.1^2+6.4^2=c^2

9.61+40.96=50.57

***IMPORTANT remember to square root the answer you get. it will still be in c^2 form. so 50.57 wouldn't be the real answer, and instead would be 7.1

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3 years ago

Whats the solution of `-5y=-5` and `7x+6y=7`

san4es73 [151]

Answer:

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Step-by-step explanation:

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3 years ago

An engineering crew ran several tests on a new automobile engine they were designing. The mean fuel consumption was 52.4 miles p

zhenek [66]

Any value which is more than 2 standard deviations away from the mean is considered to be "unusual."

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54.8, 49.1 and 51.3 are not unusual; 56.5 is unusual, because it's greaster than 56.

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3 years ago