Mathematics, 21.08.2019 19:30 biancatay
Find the x-intercepts of the parabola with vertex -1,-108 and y-intercept 0, -105. in the form (x1,y1)(x2,y2).
Answers: 2
![y=a(x-x_V)^2+y_V\ \ \ and\ \ \ Vertex=(x_V,y_V)=(-1,-108)\\\\y=a(x+1)^2-108\\\\y-intercept:\ (0,-105)\\ \Rightarrow\ \ \ -105=a(0+1)^2-108\ \ \ \Rightarrow\ \ \ a=3\\\\y=3(x+1)^2-108\\y=3[(x+1)^2-36]=3(x+1-6)(x+1+6)=3(x-5)(x+7)\\\\x-intercept:\ y=0\\\Rightarrow\ \ \ 3(x-5)(x+7)=0\\.\ \ \ \ \ \Leftrightarrow\ \ \ x-5=0\ \ \ or\ \ \ x+7=0 \ \ \ \Leftrightarrow\ \ \ x=5\ \ \ or\ \ \ x=-7\\\\Ans.\ (x_1,y_1)=(5,0),\ \ \ (x_2,y_2)=(-7,0)](/tpl/images/0185/6041/dfdc8.png)
Another question on Mathematics
Mathematics, 21.06.2019 12:40
Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.
Answers: 1
Mathematics, 21.06.2019 14:30
Atoy company is considering a cube or sphere-shaped container for packaging a new product. the height of the cube would equal the diameter of the sphere . compare the volume to surface area ratios of the containers. which packaging will be more efficient? for a sphere, sa =4πr²
Answers: 1
Mathematics, 22.06.2019 00:00
At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?
Answers: 1
Mathematics, 22.06.2019 00:10
Of f(x) is byof f(x)=-3|x| x-.f(x)? a )f(x)=3|x| b) f(x)=|x+3| c) f(x)= -3|x| d) f(x)= -|x+3|
Answers: 2
You know the right answer?
Find the x-intercepts of the parabola with vertex -1,-108 and y-intercept 0, -105. in the form (x1,y...
Questions
Mathematics, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
History, 15.01.2021 21:50
Arts, 15.01.2021 21:50
Geography, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
History, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
Chemistry, 15.01.2021 21:50
English, 15.01.2021 21:50
Mathematics, 15.01.2021 21:50
