Substitute y = -x into the first equation:
-8x - 7(-x) = -5
-8x + 7x = -5
-x = -5
x = 5
Substitute x = 5 into y = -x
y = -(5)
y = -5
Answer: x = 5, y = -5
Answer:
456
Step-by-step explanation:
If x is the number of students on the field trip:
60 + 15x + 95 + 12x
Answer:
D
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = ( -
,
) and r =
, thus
(x - (-
))² + (y -
)² = (
)², that is
(x +
)² + (y -
)² =
→ D
The nth term is 6n^2-11n+16