So for the first one what you did was wrong as in wrong formula.
Radius is 5cm as it is given and diameter is double the radius which is 10.
So r=5
And D=10.
For the second one the diameter is 16cm as it is given and radius is half the diameter,so half of 16 is 8cm right?
So r=8
And D=16
Answer: No two students ran same distance
Step-by-step explanation:
Given
Stacy ran 
of a km i.e.
Jules ran 
of a km i.e.
Raul ran 
of mile i.e.
So, no two students ran the same distance.
12x + (-3y) + 4x + (-z)
12 (3) + -3 (13) + 4 (3 ) + (-5)
36 + -39 + 12 + (-5)
36 + 12 -39 - 5
48 - 44
4
Answer:
T,F,T,F,T
Step-by-step explanation:
1. It crosses it there becuase 4(0)-15=-15 for y
2: both top and middle answers are -23, so continuous
3: it increases over that period because the exponent keeps getting bigger
4: No, its not decreasing because -12 plugged in is far less than -23 when -2 is plugged in, meaning its increasing
5: There is no number that would cause an imaginary number or make you divide by zero, meaning all real numbers are fine.
