Answer:
x = {-5π/4, -3π/4, 3π/4, 5π/4}
Step-by-step explanation:
You know that sec(x) = 1/cos(x), so this is equivalent to ...
cos(x) = -1/√2
The cosine has a magnitude of 1/√2 for an angle of 45°, or π/4 radians. It is negative in the 2nd and 3rd quadrants. Angles in those quadrants that have a reference angle of π/4 are ...
3π/4, 5π/4
We also want angles in the range -2π to 0, so all of the solutions will be ...
sec(x) = -√2 for x = {-5π/4, -3π/4, 3π/4, 5π/4}
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We like to use the x-intercept as the solution when graphing, so we write the given equation as ...
sec(x) +√2 = 0
The graph verifies the above solutions.
Hi friend,
4(2x+4)+2(3x-5)
8x+16+6x-10
8x+6x+16-10
14x+6
Hope it helps......
Answer:
$7.5
Step-by-step explanation:
4.5/6=.75 <-- price per pound
.75*10=7.5
Answer:
64 in
Step-by-step explanation:
Because the radius of the circle is 32 in,
the diameter is two times the radius, or 32 * 2 = 64 in