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ludmilkaskok [199]
3 years ago
9

Please help meeeeee ://

Mathematics
1 answer:
a_sh-v [17]3 years ago
8 0
A). They are supplementary angles meaning they add up to 180
So
B) (12x+8)+(3x+7)=180
12x+8+3x+7=180
15x+15=180
-15 -15
15x=165
15/15x=165/15
x=11

Angle 1 is
12x+8
12(11)+8
132+8
140
Therefore measure of angle 1 is 140°

Angle 2
3x+7
3(11)+7
33+7
40
Measure of angle 2 is 40°

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Carol is standing 8 feet from a lamppost. The angle of elevation from her eyes to the top of the lamppost is 20o, and the angle
kupik [55]

Answer:

Height of the lamppost = 5.602 ft + 2.912 ft = 8.514 ft

Step-by-step explanation:

The illustration form a triangle that can be demarcated into 2 right angle triangle. One triangle representing depression triangle and the other elevation triangle.

Depression triangle

The opposite side of the triangle formed is the length of the pole from the base to the horizontal line of sight. Therefore,

using tangential ratio

tan 35° = opposite/adjacent

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cross multiply

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a = 5.60166030568

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Elevation triangle

The opposite side of this right angle triangle represent the length from the horizontal line of sight to the top of the lamppost.

tan 20° = opposite/adjacent

tan 20° = b/8

cross multiply

b = 8 tan 20°

b = 8 × 0.36397023426

b = 2.91176187413

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Height of the lamppost = 5.602 ft + 2.912 ft = 8.514 ft

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Step-by-step explanation:

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Vesnalui [34]

Answer:

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We simplify the equation to the form, which is simple to understand

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We move all terms containing u to the left and all other terms to the right.

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Step-by-step explanation:

I think i did it correct

7 0
3 years ago
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