Answer:
f^-1(x) is a function
Step-by-step explanation:
To get the inverse you replace f(x) with y, so you get y=3x^2+2. Then you switch your x and y to get x=3y^2+2. Now you want to solve for y, so you subtract two to get x-2=3y^2. You then divide both sides by 3 to get (x-2)/3=y^2. Finally you square root both sides to get y=√((x-2)/3). Now you get that f^-1(x)=√((x-2)/3). When you graph it you can see that the graph passes the vertical line test, so f^-1(x) is a function.
Answer:
Step-by-step explanation:
All the costs mentioned here are before tax
Let cost of junior bacon cheese burger be
Cost of large fries be
Heather's order cost 12.50
Sarah's order cost 13.70
Multiply by
Subtracting the equations we get
Cost of large fries is
Cost of junior bacon cheeseburger before tax is .
Answer:
B
Step-by-step explanation:
Answer:
Step-by-step explanation:
How many faces in the die?
If the dice is a standard cube with equal possibility of landing on any face, the probability is 1/6
If the dice is a dodecahedron, with equal possibility of landing on any face, the probability is 1/12
Answer: A) 23.9
Step-by-step explanation:
volume of a shape means the area of its base multiplied by its height
so , the base here is a right angle triangle it's area equals 1/2*b*h = 1/2*3*6=9 m² and the prism height is 2.65.
therefore the volume is 2.65*9