Twice the complement of angle A is 40° less than the supplem

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humakhan

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Twice the complement of angle A is 40° less than the supplem

Twice the complement of angle A is 40° less than the supplement of angle A. Find the measure of angle A.
 
Complements add to 90º
Supplements add to 180º

The rest is algebra. I've seen you do far worse than this. Give it a go.
 
ok this is what i say.
2angle A = 40 < 180
2A = 180 - 40
2A = 140
A = 70
angle A = 70 degrees
 
You're just not paying attention. You could try being deliberate and careful.

a = Measure of Angle A

Measure of Complement of Angle A ==> 90º - a
Measure of Supplement of Angle A ==> 180º - a

"Twice the complement of angle A is 40° less than the supplement of angle A."

2*(90º - a) = (180º - a) - 40º

Please develop a style of care and consistency. The expression you wrote has very little to do with the problem satatement. They should at least be related, no?
 
humakhan said:
well i don't know that's how my sister did it
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It might be better if you attempted the exercise, so you could learn the process. Typing out what your sister did for you, and then copying down what the tutors do, won't be of much use for your learning. And we all want to see you succeed! :D

Please reply showing what you have done and what you think. Thank you!

Eliz.
 
thanks :)
but seriously I have tryed to do this problem and I don't understand how to get it..
I don't copy down exactly what ever my sister or you all show . I try it out myself , if what you all say is right , I check it and then I write it down.
dont copy...exactly the way you all have written.
anyways i'll check in my book .
 
I think the idea is for you to learn. You already know how to copy. Thinking is the plan.
 
hmm looks like u have deleted my post..i mean reply to your last reply. wow good going.
 
Show us a sign, humakhan. You are not being insulted, only encouraged down a better path. Learning how to learn it part of the process.

You've posted here enough to know that our desire is for students to learn. If a student shows no sign of actually learning anything, it will be a problem.

Ask me how many students I have seen throw their hands in the air, cast their pencil across the table, close their book, sigh heavily and sink down in their chair, or exclaim, "I have no clue". It is a very large number. In EVERY case, that statement or action simply constitutes a call for help. It is only an indication that learning is not yet taking place and the student has given up, become frustrated, or decided to try no longer. You don't have to do that. You do NOT have to be insulted when you are encouraged to do better.

My views. I welcome others'.
 
humakhan said:
i dont have to listen to this....
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If you mean "I don't have to listen to people try to help me and encourage me and provide me with hints and useful suggestions", no, you certainly don't. But since that appears to be "all" you're going to get here (rather than being handed the fully-worked solutions to copy down), then, regretfully, it might be concluded that perhaps this tutoring service would not suit you.

On the other hand, if you would like to work with the tutors and learn how to succeed in math by your own efforts, so that the above comment reflected merely a misunderstanding or an expression of weariness on your part, then we welcome further opportunities to partake in your growth.

Either way, my best wishes to you.

Eliz.
 
ok i think you both are right. yes sometimes i do get irritated when i don't get something at that very moment. i mean if i dont understand what the problem is asking so i just lose it. you know what i mean? but i have to try my best not to lose it and to ask for help and and see that otehrs are helping and not insulting a person. i will from now on. and try my best to do my best so i can succeed.
thanks for everything all. i was in a very bad mood yesturday , because i didn't get to talk to my cousin who i mostly talk to everyday so i was a bit mad at him that he didnt come and show up. so thats why. sorry
ok then takecare...and thanks for the wishes :)
see you
 
Twice the complement of angle A is 40° less than the supplement of angle A. Find the measure of angle A.

2 * (90 - A ) = (180 - A ) - 40
180 - 2A = (180 - A ) - 40

subtract 180 from both sides leaving with

2A = A - 40

subtract A from both sides leaving with

A = 40

check it:

2 * ( 90 - 40) = (180 - 40 ) - 40
2 * 50 = 140 - 40
100 = 100

check correct
so A angle is 40 degrees
 
If that is correct, it is only a coincidence.

180 - 2A = (180 - A ) - 40

Subtract 180

- 2A = - A - 40

That is not what you had.

You were here:

2A = A - 40

Subtract A

A = -40

That is not what you had.

You made two errors that managed to cancel each other out. Be more careful. It was just luck on this one.
 
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