3 years ago

I dont know what to do

1 answer:

6 0

What you would be to add the ratio to get 13, of which you divide the 156 by. this becomes 12, which you the multiply by each side of the ratio. This shows that the girls raised 84 dollars. while the boys raised 72.

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Find the center, vertices, and foci for the ellipse 25x^2 + 64y^2 = 1600

Alisiya [41]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Equation 25x² + 64y² = 1600

Process

1.- Divide all the equation by 1600

25x²/1600 + 64y²/ 1600 = 1600/1600

-Simplify

x²/64 + y²/ 25 = 1

2.- Equation of a horizontal ellipse

$\frac{x^{2} }{a^{2}} + \frac{y^{2}}{b^{2}} = 1$

3.- Find a, b and c

a² = 64 a = 8

b² = 25 b = 5

-Calculate c with the Pythagorean theorem

a² = b² + c²

-Solve for c

c² = a² - b²

-Substitution

c² = 8² - 5²

-Simplification

c² = 64 - 25

c² = 39

-Result

c = √13

4.- Find the center

C = (0, 0)

5.- Find the vertices

V1 = (-8, 0) V2 = (8, 0)

6.- Find the foci

F1 = (-√13, 0) F2 = (√13, 0)

7 0

3 years ago

It’s just #14 & #15, <br><br><br> HELLOOOOOOOOOOO BEUTIFULLL CAN U HELP!?

Vsevolod [243]

Answer:

14) 29.7

15) Longer leg= 12.1

Hypotenuse=14

5 0

3 years ago

Find the slope of the line that passes through each pair of points.

Alexxx [7]

Answer:

y = -2x + 9

y= -1x + 10

Step-by-step explanation:

There is a way that you can figure it out but it’s complicated use desmos it makes it easy

7 0

3 years ago

If 10% is deducted from bill, $58.50 remains to be paid. How much is original bill?

julsineya [31]

Answer:

$65.33

Step-by-step explanation:

3 0

3 years ago

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Hector keep close tabs on his bank account. His account had a balance of -$22.80. The next day, he made a deposit of $56.60. His

valentina_108 [34]

If you add 22.80 by the deposit which is 56.60 you will get 79.04
The answer is : 79.04

5 0

4 years ago

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