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sdas [7]
3 years ago
6

Select all the correct answers.

Mathematics
1 answer:
ohaa [14]3 years ago
8 0

Answer:

Lines 3 and 4

Step-by-step explanation:

ignore this rjrjrjrjrrnrnnrnrrnnr

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If sin A + sin^3 A = cos^2 A, prove that cos^6 A - 4cos^4 A + 8cos^2 A = 4.
Sphinxa [80]

Answer:

Step-by-step explanation:

sinA(1+sin^2A) = cos^2A

sinA(2 -cos^2A) = cos^2A

Squaring both sides,

sin^2A(4-4cos^2A +cos^4A) = cos^4A

(1-cos^2A)(4-4cos^2A +cos^4A) = cos^4A

4-4cos^2A +cos^4A-4cos^2A+4cos^4A-cos^6A = cos^4A

4 -cos^6A +4cos^4A -8cos^2A = 0

cos^6A - 4 cos^4A + 8cos^2A = 4

hence proveproven

4 0
2 years ago
Read 2 more answers
Can you please solve thos type of question (Question 2)
densk [106]

Answer:

I hope it helped I guess we have to combine the like terms❤

3 0
3 years ago
What is the value of y for the linear equation, <br> x + x = 2x - 4y +16
fomenos
Isolate the variable by dividing each side by factors that do not contain the variable.
2x=2x-4y+16
2x-16=2x-4y
-4y would have to equal -16
Therefore Y=4
5 0
3 years ago
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Will make you brainlistt if it is right
dexar [7]

Answer:

The amount of weeks is your independent variable, or X variable, and the height is you dependents variable.

Step-by-step explanation:

I don't know what this question is about so I'm gonna use plants as an example. The amounts of weeks that you are growing a plant is not dependent on anything. Nothing can cause change to that variable, so it would be your X. The height that your plant has grown DOES depend on how long you've grown it, so the amount of weeks, making it your Y variable.

3 0
3 years ago
Anthony Patella earns $325 a week working part-time at his uncle's restaurant. How much does he make in a
GaryK [48]
Anthony earns $16,958.5 in a year because,since there is 52.18 weeks in a year, you have to multiply 52.18 x $325 to find out how much money he made in a year.
6 0
3 years ago
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