Answer:
3.33 hours
Step-by-step explanation:
Take the total bill minus the flat charge. ($300 - $50 = $250)
Then take that amount and divide by the charge per hour.
($250/$75) = 3.33 hours
This is an equilateral triangle of height a√3/2 where a is the side length. So the area is ½a.a√3/2=a²√3/4.
So a²=25 and a=5cm. Therefore the perimeter is 3a=15cm.
Well, I can't see the choices, but to estimate that, I would round 0.48 up to 0.5, and round 591 down to 590. Then you can just half 590, which results in 295. Hope this helps!
<span>By the Pythagorean theorem:
x = </span>√(9²+7²)
= √(81+49)
= √130
≈ 11.40 to the nearest hundredth
Answer: x - 3y = -2
x = -2 + 3y
x - 3y = 16
x = 16 + 3y
