ANSWER
See attachment.
EXPLANATION
The given equation is
-3y=5x-7
when y=0,
-3(0)=5x-7
0=5x-7
5x=7
we plot (7/5,0)
when x=0
-3y=5(0)-7
y=7/3
we plot (0,7/3)
when x=1,
-3y=5(1)-7
-3y=-2
y=2/3
we plot (1,2/3)
What is the product? (3x-b)(2x^2-7x+1) A. -12x^2+42x-6 B. -12x^2+21x+6 C. 6x^3-33x^2+45x-6 D. 6x^3-27x^2-39x+6
1 answer:
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Answer:
<em>The building is 61.5 m tall</em>
Step-by-step explanation:
The image below is a diagram where all the given distances and angles are shown. We have additionally added some variables:
h = height of the building
a, b = internal angles of each triangle
x = base of each triangle
The angles a and b can be easily found by subtracting the given angles from 90° since they are complementary angles, thus:
a = 90° - 37° = 53°
b = 90° - 42° = 48°
Now we apply the tangent ratio on both triangles separately:
From the last equation:
Substituting into the first equation:
Operating on the right side:
Rearranging:
Solving for h:
Calculating:
h = 61.5 m
The building is 61.5 m tall
