Let x is the original bill
x + 0.08x = 167.4
1.8x = 167.4
x = 167.4 / 1.8
x = 155
answer: $155 was their <span>bill before the tax was added to it</span>
Answer:
Step-by-step explanation:
X2 -8 = 7x
X2 -7x -8 = 0
X2 -8x+x -8=0
X(x-8)+1(x-8) =0
(X-8)(x+1)=0
X-8=0 or x+1=0
X=8 or x=-1
Answer:
work is shown and pictured
Step-by-step explanation:
(2,-2)(4,10)
slope = (10 - (-2) / (4 - 2) = (10 + 2) / 2 = 12/2 = 6
The slope of the original equation is 6, but we are looking for a perpendicular line, so we need the negative reciprocal slope. All that means is " flip " the slope and change the sign. 6 or 6/1.....flip it...1/6...change the sign....-1/6. So we will need the slope of -1/6.
y = mx + b
slope(m) = -1/6
(2,1)...x = 2 and y = 1
now we sub and find b, the y intercept
1 = -1/6(2) + b
1 = -1/3 + b
1 + 1/3 = b
3/3 + 1/3 = b
4/3 = b
so ur perpendicular equation is : y = -1/6x + 4/3
Answer:
C. Graph C
General Formulas and Concepts:
<u>Algebra II</u>
Step-by-step explanation:
A cubic function would be f(x) = x³. When we graph this, it should look like Graph C.
