Answer:
D
Step-by-step explanation:
The answer is -403
The order of operations puts multiplication before subtraction. -1 x 372= -372, and -372-31= -403
Two.
b1 = - 4 + sqrt(19), b2 = - 4 - sqrt(19)
Answer:
24.76 mine
Step-by-step explanation:
The first thing is to calculate the area of the region, which we can calculate since we have the density and the population. The area would be the quotient between population and density:
260000/135 = 1925.93
The area would be 1925.93 square mine
We know that the area is given by:
A = pi * r ^ 2
we solve to r
r ^ 2 = A / pi
r ^ 2 = 1925.92 / 3.14
r ^ 2 = 613.3
r = 24.76
the radius is equal to 24.76 mine
