Step-by-step explanation:
tan (0)=sin (0)/cos (0)
cos (0)=sin (0)/tan (0)
= -4/5/4/3
= -3/5
Answer:
you earned $76.08 mowing the lawn
Step-by-step explanation:
99.99=23.51+x
-23.51. -23.51
x=76.08-x represents the amount of money you got by mowing the lawn which is $76.08
Firstly , we must find the gradient.
gradient, m = y2 - y1 / x2 - x1
m = 7 - (-1) / 4 - 3
m = 8
a straight line is y=mx+c
thus, we have to find the c which is y-int by subs one of the coordinate to the equation.
y=mx + c
7=8(4) + c
c = -25
thus the equation is y = 8x - 25
Answer:
2x^2 - 9x -1 = 0
Solution: x = 9 ±√89/4
2x^2 -9x +6 = 0
Solution: 9 ± √33/4
Step-by-step explanation:
Given the equation;2x^2 - 9x -1 = 0
From the quadratic formula;
-b ±√ b^2 -4ac/2a
We have;
x= -(-9) ± √(-9)^2 - -4(2)(-1)/2(2)
x = 9 ±√89/4
Also;
Given the equation: 2x^2 -9x +6 = 0
From the quadratic formula: -b ±√ b^2 -4ac/2a
We have;
x= -(-9) ± √(-9)^2 - 4(2)(6)/2(2)
x= 9 ± √33/4
