3 (x-1) - 8 = 4 (1+x) + 5 Solve it please?
1 answer:
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Answer:
(a) 27 degrees (nearest degree)
(b) 17.9 m (to one decimal place)
Step-by-step explanation:
Wow, that's along ladder, perhaps for the firemen!
From diagram,
(a)
sin(x) = 9 / 20 = 0.45
x = arcsin(0.45) = 26.74 degrees
(b)
height of wall ladder reaches
h = 20*cos(x) = 20*cos(26.74) = 17.86 m
Functions, equations and tables can be represented using graphs
- The x-intercepts are: 0, 0.35 and 1.53
- The local maximum is at point (0.17, 0.08), and the local minimum is at point (1.13, -1.07)
The expression is given as:
Rewrite the expression as a function
See attachment for the graph of the function.
<h3>The x-intercepts</h3>This is the point where the graph cross the x-axis.
From the attached graph, the x-intercepts are: 0, 0.35 and 1.53
<h3>The local maximum</h3>From the attached graph, the local maximum is at point (0.17, 0.08)
<h3>The local minimum</h3>From the attached graph, the local minimum is at point (1.13, -1.07)
<h3>Intervals</h3>- The graph increases at interval (-1.30, 0) and (1,13, infinity)
- The graph decreases at interval (- infinity, 1.30) and (0.35, 1.13)
Read more about graphs and functions at: