Answer:
hello :
f(x) = -x+0.25
g(x) = x²+3x+2
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f(-3.5) = 3.75
g(-3.5) = 3.75
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f(-0.5) =0.75
g(-0.5) = 0.75
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conclusion : answer : A) x = −3.5 and x = −0.5
Step-by-step explanation:
Hope this helps:)
Answer:
Step-by-step explanation:
Make a quadratic:
2
-8x+7=0
Then use quadratic formula to solve.
It would be x= 2 ± 
Answer:
48.5
Step-by-step explanation:
The constant of proportionality in this case is the speed at which Andrew travels.
We know that the speed is equal to:
v = d / t
We know the distance that is 145.5 miles and the time is 3 hours, replacing:
v = 145.5 / 3
v = 48.5 mi / h
which means that the equation would be:
y = k * x
where k, that is, the constant of proportionality is the velocity 48.5.
y = 48.5 * x
To check if for example x is worth 3, it would be:
y = 48.5 * 3
y = 145.5
If x is the number of sides of the regular polygon, then the sum of the interior angles is (x - 2) * 180 = 56 * 90. Solving for x gives 30 for the number of sides of the regular polygon.
To get the central angles measure, divide 360 by 30 to get 12 degrees for the measure of one of the 30 central angles.
Answer: 12 degrees
Create a right triangle.
The height of the leg will be 1250 feet. We are given an angle of depression of 47°, so we can draw an imaginary line parallel to the base of the triangle.
By the AIA Theorem, the angle of the bottom right side of the right triangle will be 47 degrees.
We want to find the distance between the coast and the island. In other words, find the length of the base of the triangle. We can do so with trigonometric ratios.
tan47 = 1250/x
x = 1166.
