Answer:
(-4,15)
Step-by-step explanation:
Personally I think this works better with substitution, but I'll do it your way.
3x + y = 3
<u>2x + y = 7 </u> Subtract these two equations
x = - 4 3 - 7 = - 4
3x + y = 3 Substitute - 4 for x
3(-4) + y = 3 Combine
-12 + y = 3 Add 12 to both sides
-12 + 12 + y = 3+12
y = 15
<u>Check</u>
2x + y = 7
2*-4 + 15 = 7
- 8 + 15 = 7
7 = 7
It checks.
It should be 87% cz 87/100
Answer:
585/4
Step-by-step explanation:
3 3/5×3×3 1/4
=15/4×3×13/4
=585/4
Note: This approach may be true in Vietnam but wrong in other countries.
well, it could mean many things like a variable, x axis on a graph, and a letter in the alphabet.
Correct. The answer is choice B
The point where the three perpendicular bisectors intersect is the circumcenter, which is the center of the circle that goes through all three vertex points of the triangle (aka circumcircle).