4 years ago

Find the value of x

Mathematics

1 answer:

valina [46]4 years ago

7 0

Answer:

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Step-by-step explanation:

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which of the following expresses the coordinates of the foci of the conic section shown below? (x-2)^2/4+(y+5)^2/9

elena55 [62]

Step-by-step explanation:

$\frac{(x - 2) {}^{2} }{4} + \frac{(y + 5) {}^{2} }{9} = 1$

This is the equation of the ellipse. Since the denominator is greater for the y values, we have a vertical ellipse. Remember a>b, so a

The formula for the foci of the vertical ellipse is

(h,k+c) and (h,k-c).

where c is

Our center (h,k) is (2, -5)

${c}^{2} = {a}^{2} - {b}^{2}$

Here a^2 is 9, b^2 is 4.

${c}^{2} = 9 - 4$

${c}^{2} = 5$

$c = \sqrt{5}$

So our foci is

$(2, - 5 + \sqrt{5} )$

and

$(2, - 5 - \sqrt{5} )$

6 0

2 years ago

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

AlladinOne [14]

Answer:

the domain of the function is 1 >= y >=9

5 0

3 years ago

when you go to answer this, can someone please give me the steps on how to do it, because I think I'm doing it wrong

leva [86]

Answer:

TUA=123

Step-by-step explanation:

so first we find <TUS in terms of x

so 180-11x-2

178-11x

so now we can use the sum of a triangle's angles which is always 180 to find the angles in triangle TUS

178-11x+5x+10+58=180

178-6x=112

take 178 from both sides

-6x=-66

x=11

so we can do 11x11+2=TUA

TUA=123

6 0

3 years ago

sarah used The repeated addition problem below to show problem 5+5+5+5+5 which multiplication problem did he solve

umka2103 [35]

The answer is 5x5 = 25

6 0

3 years ago

Read 2 more answers

Keira rented a car for 3 days. She paid $118 rent

Stells [14]

Answer:

389

Step-by-step explanation:

3*118 + 35

6 0

3 years ago