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# Help Need step by step working of these questions: Watch

1. Attached here, I will need step by step explanation because I cannot do these..
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2. help!
3. I don't do AQA, but OCR Mei.
I tried question 3 but I couldn't do it, i got an acute angle
My attempt at question 4.
Hopefully, it is right

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4. Easy easy easy! I'll help you when im on my computer
6. 7(c)Question

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7. (Original post by solosdk)
I thought it would be.. It seemed too simple to just be that.

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8. Umm, i did the exact same thing for question 4.

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9. Question 7a

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10. Question 7b

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11. I don't have time to write it out but:

7a) Rearrange it to y/3 = 4^x. You can see that Y has been replaced with (1/3)Y. This might help.

c) Simultaneous equations. 3*4^x = 4^-x. Rearrange it to make 3 the subject. 3 = 4^x/4^-x. This gives you 3 = 4^2x. log3 = 2xlog4. This should help.

3a) well we know that a=(abSinC)/2. 12.5 = (5*6*SinC)/2. From this you know that 25 = 30SinC, and I guess you can work it from there.

b) c^2 = a^2 + b^2 - 2*a*b*CosC.

4. LogaN/x = 3/2. in exponential form this = a^3/2 = n/x. I guess you could rearrange that to find X.

I'm not too sure on question 4 but I have MPC1/2 today so I hope it's bloody right..
12. There you go all questions answered and sorry bout q4 lol didnt realise

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13. Remember guys, I will need everyones input whoever is doing core 1 or 2 today, for my unofficial mark scheme thread.

please post as many questions and answers you can remember in my thread and ill update it
14. Thank you to everyone who replied on this thread, you have all helped me alot, particularly you solosdk.
15. No problemo

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