<h3>
Answer: -2</h3>
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Explanation:
Plug in x = -1 to find that
f(x) = 2|x-1|
f(-1) = 2|-1-1|
f(-1) = 2|-2|
f(-1) = 2*(2)
f(-1) = 4
If you repeat for x = 1, you should find that f(1) = 0
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Now use the average rate of change formula below. Effectively, we're using the slope formula more or less.
The average rate of change on this interval is -2
This is the same as finding the slope through the points (-1, 4) and (1, 0).
Answer:
7 hr * 12 days = 84 hours
10*84 = 840 man-hrs to build the wall
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14 men * 8 hr = 112 man-hrs/day
840/112 = 7.5 days
Step-by-step explanation:
There are infinitely many solutions for x, y and z.
By elimination, we have
(2x + 3y + 4z) - 2 (x + y + z) = 100 - 2•30
⇒ y + 2z = 40
and
(2x + 3y + 4z) - 3 (x + y + z) = 100 - 3•30
⇒ -x + z = 10
If we let z = t for some real number t, then
y + 2z = 40 ⇒ y = 40 - 2t
-x + z = 10 ⇒ x = t - 10
so any solution to the system is a point belonging to the set
2nd answer- The angles are NOT congruent. They have to have the same angles for the figures to be similar.
5x/9 = 7/11
Cross-multiply.
9(7) = 5x(11)
63 = 55x
Divide both sides by 55.
63/55 = x
Done.
