420 is the least common multiple for 21, 28, 35
15.12 miles/ 6.3 hours= 2.4 miles/hour.
The final answer is 2.4 miles per hour~
Answer: The answer is two
Step-by-step explanation:
Answer:
35,000?
Step-by-step explanation:
Step-by-step explanation:
x^3+x^2+4x+4=0
x³+x²+4x=-4
x(x²+x+4)=-4
either
x=-4
or
x²+x+4=-4
x²+x+4+4=0
x²+x+8=0
comparing with ax² +bx+c
a=1
b=1
c=8
x={-1±√{1²-4×1×8}}/2×1
x={-1±√{-31}}/2
