Time = 11/2 = 5 1/2
Road = 4 1/2 miles
Speed = 5 1/2 : 4 1/2 = 1 2/9 <------------answer
1 and 4
All angles and sides are congruent:)
Answer:
The inverse of the function is ±sqrt( (x+4)/2
Step-by-step explanation:
Set the function equal to y
y = 2x^2 -4
Exchange x and y
x = 2y^2 -4
Solve for y
Add 4 to each side
x+4 = 2y^2 -4+4
x+4 = 2y^2
Divide each side by 2
(x+4)/2 = 2/2y^2
(x+4)/2 = y^2
Take the square root of each side
±sqrt( (x+4)/2 )= sqrt(y^2)
±sqrt( (x+4)/2 )= y
The inverse of the function is ±sqrt( (x+4)/2
Answer:
2.2y-2x = 0
Step-by-step explanation:
The standard form of the equation is normally y = mx + c where m is the gradient or the slope value while c is the y intercept.
As we know, the line passes through the origin, hence, it has no y intercept. This means our c has a value of zero.
What is left to find is the slope of the line.
m = (y2 - y1)/(x2 - x1)
m = (2 - 0)/(5 - 2.8)
m = 2/2.2 = 0.9091
so the standard form of the equation of the line is y = 0.9091x
OR
y = (2/2.2)x
OR
2.2y = 2x
Answer:
zero (0)
when the exponent 0 is applied to a nonzero base, the result is always 1
Step-by-step explanation:
Acoording to the zero power rule, a non zero number raised to the power 0 is always 1:
whit 
Let's check this property using an example:
We know that a quantity over itself is always 1: 
We also know that a base without exponent is always raised to the power 1: 
Now, according to the division power rule 
, so 
