Answer:
±10
Step-by-step explanation:
so what squared is 100?
10. but also -10.
10*10 = 100, and -10*-10 is also 100.
therefore, sqrt(100) has two solutions, which are positive or negative 10, and that's the application of ±.
Answer:
78.54
Step-by-step explanation:
Area of a circle = pi time radius power of 2
A = pi*r^2
A = 3.14 * 5^2
A = 3.14 * 25
A = 78.54
1 mile = 1.609344... kilometer
2,180 miles = (1.609344... x 2,180 km)
<span> = </span><span>3,508.37 km </span><span> (rounded) </span>
Any time we have a set of pairs (x,y) we have a relation between the xs and the ys. Here x is essentially time; for each x we get a single y, that makes this a function.
Answer: D Both