2x + 3y = 13
–6x + 4y = 0
multiply the first equation by 3
6x +9y = 39
then add the 2nd equation to the first
6x +9y = 39
–6x + 4y = 0
-------------------
13y = 39
divide by 13
y =3
now take an equation and solve for x by substituting in y
2x +3y =13
2x +3(3) =13
2x+9 =13
subtract 9 from each side
2x =4
divide by 2
x=2
Answer (2,3)
Choice A
Answer:
45
Step-by-step explanation:
I used Toa to figure it out. First I did Tan(32) times 13 and got 45.
Answer:
1. 
2. 
Step-by-step explanation:
<u>Problem #1:</u>
1. Find the GCF (Greatest Common Factor)
2. Factor out the GCF and simplify.
3. Factor 
<u>Which two numbers add up to 7 and multiply to 10?</u>
2 and 5
<u>Rewrite the expression using the above.</u>
4. Done!
<u>Problem #2:</u>
1. Find the GCF (Greatest Common Factor)
2. Factor out the GCF and simplify.
3. Use the perfect square formula. 
4. Done!
Answer:
x=4
Step-by-step explanation:
Problem set up is: 5x-6=14
5x=20
x=4
A, because: 20x10 1/2=210
And 20x11 1/4=225
And 225-210=15
So thats the answer.
