Answer:
The choice A.
Step-by-step explanation:
sin= Opposite/ hypotenuse

tan = opposite/adjacent

I hope I helped you^_^
The answer would be 49 miles
if you let x equal the number of weeks and y equal the total amount of miles, you could set up the equation
y = 3.5x + 14
to find the amount of miles Oliver ran during the 10th week, you would plug in 10 for x, giving you
y = 3.5(10) + 14
y = 35+14
y=49
Answer:
x = 14
Step-by-step explanation:
Extend line AB so that it intersects ray CE at point G. Then angles BGC and BAD are "alternate interior angles", hence congruent.
The angle at B is exterior to triangle BCG, and is equal to the sum of the interior angles at C and G:
138 = (376 -23x) +(x^2 -8x)
Subtracting 138 and collecting terms we have ...
x^2 -31x +238 = 0
For your calculator, a=1, b=-31, c=238.
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<em>Additional comment</em>
You will find that the solutions to this are x = {14, 17}. You will also find that angle BCE will have corresponding values of 54° and -15°. That is, the solution x=17 is "extraneous." It is a solution to the equation, but not to the problem.
For x=14, the marked angles are A = 84°, C = 54°.