Answer:
Pipe 1 twice as fast as pipe 2.
(Pipe 1 time * Pipe 2 time) / (Pipe 1 time + Pipe 2 time) = combined time
(x * (x/2)) / (x + x/2) = 10
(x^2/2) / 1.5 x = 10
x^2 / 2 = 15 x
x^2 /2 - 15 x = 0
x = 30 (slow pipe)
x/2 = 15 (fast pipe)
So it would take 30 hours using the slow pipe only.
Step-by-step explanation:
Answer:
(c) y > 2/3x + 3
Step-by-step explanation:
Shading to the left of a line with positive slope is the same as shading above that line. That, and the fact that the line is dashed, means the inequality will be of the form ...
y > ( ) . . . . . . the solution set is y-values greater than those on the line
__
There are two choices in this form. You can see which one will include the point (-3, 1) on the boundary line:
<u>y > 3/2x +3</u>
y > (3/2)(-3) +3 = -3/2 . . . . . not 1. This is not the correct inequality
<u>y > 2/3x +3</u>
y > (2/3)(-3) +3 = 1 . . . . . . . the inequality we're looking for
Answer:
So the final answers would be (90 > z)-P(80<z) = .47725 or 47.725%
Step-by-step explanation:
Answer:
116
Step-by-step explanation:
12(10) -4
120-4=116