A 1010-ft vertical post casts a 2020-in. Shadow at the same time a nearby cell phone tower casts a 115115-ft shadow. What is the first step to find the height of the cell phone tower? How tall is the cell phone tower? The cell phone tower's height is

690862 ft

Step-by-step explanation:

Consider Figure 1.1 in the attachment, first all dimensions must be in the same unit.

12 inches = 1 feet

2020 inch = 168.33 feet

Next, using trigonometric ratio,

Therefore:  

Now at a particular point in time, the angle of elevation of the sun is the same on all objects, therefore the angle of elevation of the mast is the same as that of the vertical post.

Therefore  in figure 1.2

x= 115115 X tan80.54 =690862ft.

Therefore the height of the phone tower is 690862ft

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

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