Answer:
A,B,C
Step-by-step explanation:
A.p.e.x
<span>four over nine of a mile in four over five of an hour
= 4 4
----- / ----
9 5
</span>= 4 5
----- * ----
9 4
= 20
-------
36
= 5
-----
9
answer is : <span>four ninths over four fifths = five over nine mile per hour (first choice)</span>
Answer:
9
Step-by-step explanation:
Compare your x2 + y2=81 to the following:
x^2 + y^2 = 81
The " ^ " symbol indicates exponentiation.
Now compare x^2 + y^2 = 81 to
x^2 + y^2 = r^2.
This is the standard equation of a circle of radius r centered at the origin, (0,0). You can see for yourself that 81 must equal r^2.
Taking the square root of 81, we get plus or minus 9.
But the radius must be positive, so we reject the -9 and take +9.
The radius is 9.
Answer: PiN, Pi/3+2PiN, 5Pi/3+2PiN
Step-by-step explanation: Use formula sheet
If the value depreciates 8.6%, it is 91.4% of what it was the year before. The value can be modeled by
y = 19500(0.914)^x