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pishuonlain [190]
3 years ago
13

Please help me with a) and b) I’m very lost, please explain and how you got your answer

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
8 0

To solve A, complete the square for both variables.

The center is (6,4)

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Ratling [72]

Answer:

solution,

5x/7-5=50

5x-35=50

5x=50-35

5x=15

x=15/5

x=3.

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Prove, cotx -tanx= 2 cot2x
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Step-by-step explanation:

<em>cotx-</em><em> </em><em>tanx</em><em>=</em><em> </em><em>2cot2x</em>

<em>L.H.S</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>cosx</em><em>/</em><em>sinx-</em><em> </em><em>sinx</em><em>/</em><em>cosx</em><em> </em>

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<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>[</em><em> </em><em>cos</em><em>²</em><em>x-</em><em>(</em><em>1</em><em>-cos</em><em>²</em><em>x</em><em>)</em><em>]</em><em>/</em><em>sinxcosx</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>(</em><em> </em><em>2cos</em><em>²</em><em>x-1</em><em>)</em><em>/</em><em>sinxcosx</em>

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4 0
2 years ago
The amount of money that Li spends on a video game depends on how many game he purchases. if Li has at most $90 to spend on game
siniylev [52]

Answer:

Hence Domain set for function is {0,1,2,3,4}

Step-by-step explanation:

Given:

Total amount spend =90

22.5 $ each game cost

To Find:

What is domain for the function

Solution:

Now domain mean all possible value for input so that it gives real output as per condition mentioned

So Our condition is that li spends money on video game depends on how many game he purchases

so  total money  spent on game is output

i.e in order to get that much amount of games.

If he spends 22.5 $ for each game and Total amount spent is 90

So 90/22.5=4 Now amount of game he would purchase will be 4

i.e range for lil is 0 to 4 wiht 90 $ in hand

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7 0
3 years ago
Please Help! Question is:
Natasha_Volkova [10]

Answer: D

Step-by-step explanation:

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Whats the answer giving brainliest :)&gt;.
elena-s [515]

Answer:

B is the correct answer :))

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Step-by-step explanation:

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