D = 0.5 + 20x + 0.5v
Initial distance covered d1 = 0.5km
If she rode a bicycle for x hours at an average speed of 20 kilometers per hour, then her distance during thus period is,;
Speed = Distance/Time
Distance d2 = speed × time
d2 = 20x
If she ran for 0.5 hour at an average speed of v kilometers per hour, her distance this time will be;
Distance d3 = 0.5v
If her total distance is D, then;
D = d1+d2+d3
D = 0.5 + 20x + 0.5v
Hence an equation that relates D, x, and v is D = 0.5 + 20x + 0.5v
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4/5 a mile
2/10 time 10=20/100
20/100+ 60/100=80/100 or 4/5
Answer:
A
Step-by-step explanation:
4(3)+12=24, which is less than 28, so the inequality would be true
A line that has a y-int. but no x-int. is a horizontal line, with slope m = 0.