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notsponge [240]
3 years ago
10

A cell phone tower in a field casts a shadow of 100 ft. at the same time, a 4 ft 6 in post near the tower casts a shadow of 3 ft

4 in.
Mathematics
1 answer:
kogti [31]3 years ago
3 0
Try using wolfram alpha

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Can someone please help me thanks :)
Dmitrij [34]
29 degrees. You can just add 12 and 17 to find this, since the 12 is negative
7 0
3 years ago
Write an equation of a line that is perpendicular to the line y=2/3x and passes through origin
sesenic [268]

keeping in mind that perpendicular lines have negative reciprocal slopes, hmmm what's the slope of the equation above anyway?

\bf y = \cfrac{2}{3}x\implies y = \stackrel{\stackrel{m}{\downarrow }}{\cfrac{2}{3}}x+0\qquad \impliedby \begin{array}{|c|ll} \cline{1-1} slope-intercept~form\\ \cline{1-1} \\ y=\underset{y-intercept}{\stackrel{slope\qquad }{\stackrel{\downarrow }{m}x+\underset{\uparrow }{b}}} \\\\ \cline{1-1} \end{array} \\\\[-0.35em] ~\dotfill

\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}} {\stackrel{slope}{\cfrac{2}{3}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{3}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{3}{2}}}

so we're really looking for the equation of a line whose slope is -3/2 and runs through (0,0).

\bf (\stackrel{x_1}{0}~,~\stackrel{y_1}{0})~\hspace{10em} \stackrel{slope}{m}\implies -\cfrac{3}{2} \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{-\cfrac{3}{2}}(x-\stackrel{x_1}{0})\implies y=-\cfrac{3}{2}x

7 0
3 years ago
What is the measure of a
Softa [21]

70º

It's a supplementary angle so 180º - 110º

3 0
3 years ago
Read 2 more answers
Find x if the average of 20,20,19,13 and x is 16
amid [387]
16 times the quantity of numbers, in this case 5, which = 80, then subtract each number, 80-20-20-19-13=8.  X should = 8
4 0
3 years ago
Read 2 more answers
The price of a new car was $22,800vin April. However, the price of the car was reduced 5% in May. Find the price in May.
Levart [38]

Answer: 1140

Step-by-step explanation: Sorry if its wrong

3 0
3 years ago
Read 2 more answers
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