9^4 + 3^3
= 9•9•9•9 + 3•3•3
= 6,561 + 27
= 6,588
Hi, I'd be glad to help.
1) a = 8
2) d = (-21)
3) n = 42
4) t = (-9)
(- 1 + √3)/2
rationalise the denominator by multiplying the numerator/denominator by the conjugate of the denominator.
the conjugate of 1 + √3 is 1 - √3
(1 - √3)/(1 + √3)(1 - √3) = (1 - √3)/( 1² - (√3)²) = (1 - √3)/(1 - 3) = (1 - √3)/(- 2)
multiply numerator/denominator by (- 1)
=(-1 +√3)/2
Answer:
The solution in the attached figure
Step-by-step explanation:
we have

we know that
The solution of the inequality is the shaded area below the dashed line of the parabola
The equation of the dashed line is the vertical parabola 
therefore
The solution in the attached figure
Answer:
(- 2, 3)
Step-by-step explanation:
The solution of the graphed system is the point of intersection of the 2 lines.
This occurs in the second quadrant where the x- coordinate is negative and the y- coordinate positive.
A reasonable estimate is therefore (- 2, 3)