The lighthouse on the beach cast a shadow that is 48 feet long your friend is 5.5 feet tall and casts a shadow that is 2.2 feet long what is the height of the lighthouse

Height of the light house is 120 feets

Step-by-step explanation:

From the picture above the lighthouse and the human cast there shadow in the same direction and on the same horizontal surface. so, both are likely to get the same angle of depressions.

Translating the events mathematically, both formed a right angle triangle . The first triangle has only base/adjacent length, so you need an angle to get the height as required from the question. The second triangle has two sides known so we can use the known sides to get the angle of depression which can be use to get the height of the first triangle.

Now let's get the angle of the second triangle .

using SOHCAHTOA,

since we are given the opposite and adjacent length of the triangle we use

tan ∅ = opposite/adjacent  = 5.5/2.2 = 2.5

tan ∅ = 2.5

Now the angle of depression is already known let us use it to solve for the height in the first triangle .

tan ∅ = opposite/adjacent =  height/48

Recall tan ∅ = 2.5

Therefore 2.5 = height/48

cross multiplying

2.5 × 48 = height

height  = 120 feets

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart