Answer:
In your equations, there is only one variable you're using: y. I do not know what you mean by 2 variables, but probably you copied the wrong equations.
......Anyways......
To solve it, you must know that the sum of all 3 angles of a triangle is 180°.
To set up the equation, add all three angle measures on one side of the equation, and then 180 on the other side. It should be like this:
(6y+1)+(4y-7)+(9y+3) = 180
Now that you're done with the set-up, I assume you know what to do next. We can't always do the work for you. ^_~
> Add up the measures of each angle.
> Isolate the equation with only variable on one side and only number on the other side.
> Substitute each variable y for each angle measure and solve it.
Hope this helps a lot. ^_^
Answer:
The answer is 14°. I hope it helps you
Answer:
i) 12 believe neither of these things.
ii) 3 believe voting is a waste of time but don't believe that they have been abducted by space aliens.
Step-by-step explanation:
I'm going to solve these question treating these events as Venn sets.
I am going to say that:
Event A: Voting is a waste of time.
Event B: They have been abducated by space aliens.
45 believe that Voting is a waste of time
This means that 
49 believe that they have been abducted by space aliens
This means that 
42 believe both of these things
This means that 
i). How many believe neither of these things?
Total of 64.
At least one is:
With the values we have
None:
12 believe neither of these things.
ii). How many believe Voting is a waste of time but don't believe that they have been abducted by space aliens?
This is:
3 believe voting is a waste of time but don't believe that they have been abducted by space aliens.
Answer: Lottie saved 330 pounds.
Step-by-step explanation:
Lottie's amount can be represented by the expression x + 76 and Kai's amount is unknown so we will also represent by x.
We know that the combination of their savings will be 584 pounds so we will add the expression and set them equal 584.
x + (x + 76) = 584 Now solve for x
2x + 76 = 584
-76 -76
2x = 508
x= 254
If x was Kai's amount then Kai save 254 pounds.
Lottie saved 76 more that Kai
254 + 76 = 330
Lottie also save 330 pounds
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