Answer: −
2
±
√
13
Step-by-step explanation:
(-b±√(b²-4ac))/(2a)
Plug in and solve.
Answer:
5.25 hours
Step-by-step explanation:
One week = 7 days
7 x 0.75 = 5.25 Hours
Hope this helps, mark as brainliest :)
<span>Let Rico's speed be S
Then Luis' is: 3S
</span>We then get: seventy-two over s equals seventy-two over three s plus four
216=72+12s Multiplying by LCD, 3S
216-72=12s
<span>144 = 12S
</span><span>S, or Rico's speed would be 144 over 12 or 12mph</span>
6$ for 13 but I can’t see instructions
