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weeeeeb [17]
2 years ago
14

Convert the equation –9x2 + 25y2 – 100 – 125 = O into standard form.

Mathematics
2 answers:
lesantik [10]2 years ago
7 0

Answer:

\frac{y^{2} }{9} -\frac{x^{2} }{25} =1

Step-by-step Explanation:

cuz i know mark brainliest please

Dmitry [639]2 years ago
5 0

Answer:

C. (y-2)^2/9 - x^2/25 = 1

Step-by-step explanation:

Edge 2021

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Identify the zeros of f(x)=(x-7)(x+4)(3x-2)
alexgriva [62]

To find the zero you must set each factor equal to zero and solve for for x like so...

Factor (x - 7)

x - 7 = 0

x = 7

Factor (x + 4)

x + 4 = 0

x = -4

Factor (3x - 2)

3x - 2 = 0

3x = 2

x = \frac{2}{3}

All the zeros are:

-4, \frac{2}{3}, 7

Hope this helped!

~Just a girl in love with Shawn Mendes

4 0
2 years ago
Hi, I am new to this website :) I'm currently taking an online trig class on De Moivre's theorem and I don't understand it at al
Vladimir [108]
De Moivre's theorem uses this general formula z = r(cos α + i<span> sin α) that is where we can have the form a + bi. If the given is raised to a certain number, then the r is raised to the same number while the angles are being multiplied by that number.

For 1) </span>[3cos(27))+isin(27)]^5 we first apply the concept I mentioned above where it becomes

[3^5cos(27*5))+isin(27*5)] and then after simplifying we get, [243 (cos (135) + isin (135))] 

it is then further simplified to 243 (-1/ √2) + 243i (1/√2) = -243/√2 + 243/<span>√2 i
and that is the answer.

For 2) </span>[2(cos(40))+isin(40)]^6, we apply the same steps in 1)

[2^6(cos(40*6))+isin(40*6)],

[64(cos(240))+isin(240)] = 64 (-1/2) + 64i (-√3 /2)

And the answer is -32 -32 √3 i

Summary:
1) -243/√2 + 243/√2 i
2)-32 -32 √3 i

7 0
3 years ago
Sonal went to school for 219 days in a full year. if her attendance is 75 percent find the number of days on which the school wa
Charra [1.4K]
Sonal went to school for 219 days in a full year. if her attendance is 75 percent find the number of days on which the school was open

7 0
3 years ago
Plz help fast will mark brainliest
Semenov [28]

Answer: -270

Step-by-step explanation:

First, simplify the exponent

-6*(25+20)

Then, distribute

-150+-120

Then, subtract(add a negative)

-270

Hope it helps <3 :)

6 0
2 years ago
Read 2 more answers
Griffins driveaway is 36 feet long. choose the word and number to complete the sentence correctly.to convert 36 feet to yards wh
never [62]
Divide 36 by 3 to convert from yards to feet. 
the yards to feet ratio is 3:1
5 0
2 years ago
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