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hjlf
3 years ago
15

Which points are the approximate locations of the foci of the ellipse? Round to the nearest tenth. (−2.2, 4) and (8.2, 4) (−0.8,

4) and (5.2, 4) (3, -1.2) and (3, 9.2) (3, 1.3) and (3, 6.7) PLEASE HURRY!!! IM TIMED!!!!!!!!!!!

Mathematics
2 answers:
sasho [114]3 years ago
8 0
To solve this problem you must apply the proccedure shown below:
 1. You have to find the distance from the center to the focus, as below:
 c=√(a^2-b^2)
 Where a is the major radius and b is the minor radius.
 2. Therefore, by the graph, you have:
 a=6
 a^2=36
 b=3
 b^2=9
 3. When you substitute the values, you obtain:
 c=5.2
 4. As you can see in the graph, the coordinates of the center is (3,4), then, the locations of the foci:
 3+c=8.2
 3-c=-2.2
 The answer is: (-2.2,4) and (8.2,4)
cestrela7 [59]3 years ago
6 0

Answer:

(−2.2, 4) and (8.2, 4)

Step-by-step explanation:

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1/3 + a = 5/4<br> a = __??
makkiz [27]

Answer:

The correct answer is,

x =  \frac{11}{12}

8 0
3 years ago
Use Ohm’s law to find the resistance of the light bulb if you had a 20 volt battery and 0.57 amps of current. Show your work for
aleksley [76]
For this case we have the following equation:
 V = I * R
 Where,
 V: voltage
 I: current
 R: resistance
 By clearing R we have:
 R = V / I
 Substituting the values:
 R = (20) / (0.57)
 R = 35.09 Ohms
 Answer:
 
The resistance of the light bulb is:
 
R = 35.09 Ohms
6 0
3 years ago
A recliner that costs $150 was marked up by 100%.
sveta [45]
Recliner:
Markup $10 
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computer:
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8 0
3 years ago
PLEASE HELP 60 POINTS!!!!!!Sal’s Sandwich Shop sells wraps and sandwiches as part of its lunch specials.
Zanzabum

2x + 3y = 1,470

To solve using the slope intercept method, we need to solve for y.

First, subtract 2x from each side.

3y = -2x +1470

The, we need to divide both sides of the equation by by 3 to solve for y

y = -2/3 x + 490.


We know the y intercept is 470, which means on the y axis we place at point at positive 490.  The slope is -2/3.  We go down 2 units and over to the right 3 units and place a point.  We draw a line connecting these two points extending only to the right until it reaches the x axis. We cannot have negative x because we cannot sell negative lunch specials.  We cannot have negative y, because y is the number of specials sold.

8 0
3 years ago
5x+2y=-3;x+5y=4<br>plz answer me​
Alex17521 [72]

Answer:

x = -1 and y = 1

Step-by-step explanation:

5x + 2y = -3 . . . . . . . (i)

x + 5y = 4 . . . . . . . (ii)

  • Finding x in terms of y from eq. (ii) :-

x + 5y = 4

x = 4 - 5y

  • Placing this value of x in eq. (i) :-

5(4 - 5y) + 2y = -3

20 - 25y + 2y = -3

-23y = - 23

<u>y = 1</u>

  • Placing the value of y in eq. (i)

5x + 2(1) = -3

5x + 2 = -3

5x = - 5

<u>x = -1</u>

7 0
3 years ago
Read 2 more answers
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