13 = r/9 + 8
subtract 8 from each side
5 = r/9
multiply 9 from each side
r = 45
Answer:
C) x2 + x = 306
Step-by-step explanation:
x2 + x = 306
x2 + x - 306 = 0
x2 + 18x - 17x + 18 * (-17) = 0
x ( x + 18) - 17 (x +18) =0
(x + 18) (x - 17 ) = 0
x = -18 or 17
To know how many gumballs will fit in the machine, the
volume of the minature and the machine should be calculated. Volume of sphere:
V = (4/3) pi* r^3
Volume of the machine r = 6 in
V = (4/3) pi* 6^3 = 904.77 in3
Volume of the miniature gumballs
V = (4/3) pi* (1/3)^3 = 0.1551 in3
Divide the two volume to get the number of gumballs that can
fill the machine
904.77 in3/ 0.1551 in3 = 5832
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Well the best answer i could get was for 22min bike 11mph
and for 38min bike 15mph
and that will put him at 600.5 calories every hour
X+52=149 x=97 hope this helped!