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frutty [35]
3 years ago
12

The ellipse with foci at (4, 0) and (-4, 0); y-intercepts (0, 3) and (0, -3).

Mathematics
1 answer:
Nesterboy [21]3 years ago
4 0
Distance of Foci = c

Then,

c = 4

As c^2 + b^2 = a^2

And, b = 3

Then us will have:

a^2 = 4^2 + 3^2

a^2 = 16 + 9

a^2 = 25

a = 5


The equation of ellipse to this question is:

x^2 / a^2 + y^2/b^2 = 1

Then,

x^2 / 25 + y^2 / 9 = 1
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How to wirte a linear equation from a graph
astra-53 [7]
Hey there!
I'll assume we're using the slope-intercept form equation:
y = mx + b
m = slope
b = y-intercept
First, we keep the y, because it's value depends on the x value given.
Next, we find the slope. Slope is defined as rise/run, so we take two points on the graph, find how much taller one is from another, and how far right/left they are, put those values over each other, and we have out slope (m).
Finally, we need to determine the y-intercept, and that's as simple as seeing where the line crosses the y axis and writing down that value.
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8 0
4 years ago
Please help 18939290201010
aalyn [17]

Answer: 3 3/5

3 3/4=3.75

3 3/5=3.6

3.6 is less than 3.75

6 0
3 years ago
F(x) = 2(x+3)2 -7<br><br><br> a= <br><br> h=<br><br> k=
vlabodo [156]

Answer:

Step-by-step explanation:

In vertex form, the equation is

y = a(x-h)^2 + k

So just read off the values!

6 0
3 years ago
PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.
hoa [83]

Answer:

The answer to your question is AC = 9.9

Step-by-step explanation:

To solve this problem use trigonometric functions. The trigonometric function that relates the hypotenuse and the adjacent side is cosine.

             cos α = \frac{adjacent side}{hypotenuse}

Solve for hypotenuse

              hypotenuse = \frac{adjacent side}{cos\alpha }

Substitution

             hypotenuse = \frac{9}{cos 24}

Simplification and result

             hypotenuse = 9.85

6 0
3 years ago
Which is bigger 11/20 or 14/25?
NeX [460]
14/25 is bigger, when you divide these numbers and look for their decimals, you can tell which one is greater
3 0
3 years ago
Read 2 more answers
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