Plug in a -20 wherever you see a b
(-20)^2 +4*-20-89/13
400 + -80-89/13
400 - 169/13
400-13
=387
Hope this helps
Answer:
The graph cuts the x-axis at odd multiplicities.
Step-by-step explanation:
Let
Then x-a has multiplicity n.
This determines whether, the x-intercept x=a cuts the x-axis or just touches it.
If n is even, the graph of p(x) just touches or becomes a tangent to the x-axis.
If n is odd , the graph cuts the x-axis.
Purchase price of the house = $360,000
Price of the house after 1 year = $253,800
Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = * 100
⇒ Percent decrease in the value of the house = 29.5%
Hence, the price of the house decreased by 29.5% over an year.
Answer:
y=2x-4
Step-by-step explanation:
To find an equation perpendicular to another one, you must find the negative inverse of the slope.
In this case, -1/2 has an inverse of -2, but because we're finding the negative inverse, the two negatives cancel out and we get 2, the slope of our perpendicular equation, which crosses the initial equation, making a right angle.