Answer:
Lara's average speed :
average speed = total distance / total time
=> 8 miles / 2.5 hours
=> 3.2 mph
Tim's average speed :
= total distance / total time
= 12 miles / 3.5 hours
= 3.43 mph
therefore,
Tim's average speed (3.43 mph) is greater.
Dividing 1 1/4 hrs by 5 days results in the unit rate:
1 1/4 hrs 5/4 hrs
----------- = ---------------- = 1/4 hr per day
5 days 5 days
Answer:
![\large\boxed{12\sqrt5}](https://tex.z-dn.net/?f=%5Clarge%5Cboxed%7B12%5Csqrt5%7D)
Step-by-step explanation:
![\text{Use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\-----------------\\\\-4\sqrt{15}\cdot\left(-\sqrt3\right)=4\sqrt{(15)(3)}=4\sqrt{5\cdot3\cdot3}=4\sqrt5\cdot\sqrt9\\\\=4\sqrt5\cdot3=12\sqrt5](https://tex.z-dn.net/?f=%5Ctext%7BUse%7D%5C%20%5Csqrt%7Bab%7D%3D%5Csqrt%7Ba%7D%5Ccdot%5Csqrt%7Bb%7D%5C%5C-----------------%5C%5C%5C%5C-4%5Csqrt%7B15%7D%5Ccdot%5Cleft%28-%5Csqrt3%5Cright%29%3D4%5Csqrt%7B%2815%29%283%29%7D%3D4%5Csqrt%7B5%5Ccdot3%5Ccdot3%7D%3D4%5Csqrt5%5Ccdot%5Csqrt9%5C%5C%5C%5C%3D4%5Csqrt5%5Ccdot3%3D12%5Csqrt5)
Answer:
the answer is B. The inverse f the given statement is
"If a polygon is not a Pentagon, then it does not have five sides".
Step-by-step explanation: