More math help

[AniJan]

I can't understand these simple math questions. Its because of the grammar. Grammar is the only weakness that's holding me back from understanding.

 

Anyway, I can't understand what it's trying to tell me on both problems.

Here's my thought process on the problems:

 

18)"the larger exceeds 7 times the smaller by 4 degrees. Wait what the he'll does that mean? Its 7 times bigger than the smaller by 4 degrees..? Does x equal 4? I dont get it"

 

19) "one of the two complementary angles added to one half the other yields 72 degrees.. So x + 1/2y=72 degrees? Wait wtf? That doesnt make sense.." (answer is 27)

 

 

[bomerr]

18. You start by defining the terms. What is a supplementary angle? So it's 2 angles that add up to 180. Then translate it in math. So X + Y = 180. Then larger of 2 means X > Y (or Y > X, however you want to define the larger one). 7 times by the smaller is X = 7Y, and lastly by 4 means +4 so X = 7Y+4. Then combine the 2 equations. 7Y+4+Y=180. Y=22. 180-22= 158. So X is 158.

 

 

[AniJan]

1 hour ago, bomerr said:

18. You start by defining the terms. What is a supplementary angle? So it's 2 angles that add up to 180. Then translate it in math. So X + Y = 180. Then larger of 2 means X > Y (or Y > X, however you want to define the larger one). 7 times by the smaller is X = 7Y, and lastly by 4 means +4 so X = 7Y+4. Then combine the 2 equations. 7Y+4+Y=180. Y=22. 180-22= 158. So X is 158.

 

 

By 4 means plus 4? Oh..

Thank you so much.

[Guest]

4 hours ago, AniJan said:

By 4 means plus 4? Oh..

Thank you so much.

Where are you from? Just curious

[anothertom]

6 hours ago, AniJan said:

By 4 means plus 4? Oh..

Thank you so much.

not as such, but in the context "the larger of two supplementary angles exceeds 7 times the smaller by 4 degrees." which is saying X is bigger than 7 times Y by four degrees. or X= 7Y + 4.

 

If they had left out the 'degrees' after the four then you could say that X is bigger than 7 times Y four times, or X=4 * 7Y. It's a nuance of how the sentence is written.

[Shakaza]

These are my comments on question 19: Complementary angles mean that the sum of two angles is 90 degrees, yes? So, x + y = 90. Then, if x + 1/2y = 72, you can then determine the value of y, either by elimination, or just by thinking about it. And, from there, you can determine the angle of x and then divide it by two. If you need more help, you can ask, but I want you to do some of the work and get the processes needed to solve such things in your head, which will hopefully help you in the future.

[Dash Lambda]

I'm late, but I'll go ahead and reword them.

 

18: Given a pair of supplementary angles, the larger angle is 4° greater than 7 times the smaller angle. Find the larger angle.

19: Given a pair of complementary angles, the sum of the first angle and half of the second angle is 72°. Find the larger angle and divide it by two. (Why divide it by two, I haven't the foggiest.)