The height of the building is 19.02 feet, for a 20-ft ladder to lean against the building at an angle of 72 degrees.
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more variables and numbers.
Trigonometric ratio is used to show the relationship between the sides and angles of a right angle triangle.
Let h represent the height of the building, hence:
sin(72) = h/20
h = 19.02 feet
The height of the building is 19.02 feet, for a 20-ft ladder to lean against the building at an angle of 72 degrees.
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Let the amount invested with 5% interest be x
Therefore, the amount invested with 6% interest will be (6000-x)
It is given that the total interest earned yearly is $337.5. Thus, the equation of interest will be:
Multiplying both sides by 100 we get:
Subtracting both sides by 36000 we get:
Thus, the amount invested at 5% is $2250
Therefore, the amount invested at 6% will be $(6000-2250)=$3750
The total meal costs = $6.75+$4.25+$5.50 =$16.5
The tip amounted to 16.5 x 18%=16.5 x 0.18 = $2.97
Total amount spent $16.5+$2.97 = $19.47
Since they want to share equally let's find the average= 19.47/3
Each one will pay $6.49
Answer:
The equation is 4x + 3 ....
