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ElenaW [278]
3 years ago
10

Find the measure of angle b.

Mathematics
2 answers:
dmitriy555 [2]3 years ago
6 0

Answer:

31

angles on a line = 180°

so, 90-59-b=180°

Elina [12.6K]3 years ago
4 0

Answer:

b = 31°

Step-by-step explanation:

b + 59 = 90

b = 90 - 59

b = 31°

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Write the equation of the ellipse with foci at (-2,2) and (4,2) and major axis of length 10 *
Luda [366]

Answer:

The answer to your question is   \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1          

Step-by-step explanation:

Data

Foci  (-2, 2)  (4, 2)

Major axis = 10

Process

1.- Plot the foci to determine if the ellipse is vertical or horizontal. See the picture below.

From the graph we conclude that it is a horizontal ellipse.

2.- Determine the foci axis (distance between the foci)

                  2c = 6

                    c = 6/2

                    c = 3

3.- Determine a

                  2a = 10

                    a = 10/2

                    a = 5

4.- Determine b using the Pythagorean theorem

                   a² = b² + c²

-Solve for b

                   b² = a² - c²

                   b² = 5² - 3²

                   b² = 25 - 9

                   b² = 16

                   b = 4

5.- Find the center (1, 2)  From the graph, it is in the middle of the foci

6.- Find the equation of the ellipse

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

                       \frac{(x - 1)^{2}}{25} + \frac{(y - 2)^{2}}{16} = 1                

3 0
3 years ago
Line q passes through points (9, 9) and (1, 2). Line r is perpendicular to q. What is the slope of line r?
Alik [6]

Answer:

y=mx+b

Step-by-step explanation:

6 0
3 years ago
Coefficient of x^2 in expansion of the binomial theorem (2x-1)^4 show your work
tekilochka [14]

Answer:

24

Step-by-step explanation:

If you use Pascal's triangle, which I did, you will look at the 5th row of the triangle which contains the numbers 1, 4, 6, 4, 1

If we expand using a = 2x and b = -1, then the expansion looks like this:

1(2x)^4(-1)^0+4(2x)^3(-1)^1+6(2x)^2(-1)^2+4(2x)^1(-1)^3+1(2x)^0(-1)^4

If you simplify all that down by multiplying, you'll get

16x^4-32x^3+24x^2-8x+1

If you don't know how to use Pascal's triangle, you need to learn.  It's so very cool!

4 0
3 years ago
NEED HELP ASAP 100PT
Natali5045456 [20]

The answer is -6 < x < 9.

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7 0
3 years ago
Read 2 more answers
7,110 round to nearest thousand place
Valentin [98]
10 000

Anything greater than 5 rounds up 

Hope this helps :)
6 0
3 years ago
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