It would take 6
hours or 6.25 hours if John uses the 100 watt pump.
Answer:
see explanation
Step-by-step explanation:
The surface area (A) of a sphere is calculated as
A = 4πr² ← r is the radius, here r = 9, thus
A = 4π × 9² = 4π × 81 = 324π ≈ 1017.9 units²
Answer: 20 and 22
The product of 20 and 22 is 440 and 22 is 2 more than 20.
Answer: C (24.5 miles more)
Step-by-step explanation:
on Friday she rode 42.4 miles
on Tuesday she rode 17.9 miles
you just subtract Tuesday’s miles from Friday’s miles
42.4 - 17.9 = 24.5
so, C
The third graph represents a function.
In a function, every input (x value) has <em>exactly</em> one output (y value). If even a single input has zero or two outputs, the graph does not represent a function.
A good way of testing this is using a vertical line. As you move a vertical line from left to right across a graph, it should always be touching exactly one point on the graphed line.
In this case, every graph fails this vertical line test except for the third graph, so the third graph represents a function.
