When a 757 passenger jet begins its descent to the Ronald Reagan National Airport in Washington, D.C., it is 3900 feet from the
2 answers:
Answer:
Option A. 37106 ft.
Step-by-step explanation:
Given: An 757 passenger jet at the height of 3900 feet from the ground means vertical height = 3900 feet.
Angle of descent to the airport in Washington,D.C. is 6 degrees.
To find: Horizontal distance the plane will cover to reach the run way.
Solution: As we know tan ∅ =
Then tan 6° =
0.105 =
x =
x = 37106 ft
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It will take 20 months for the cost to be same.
Step-by-step explanation:
Apartment A;
Security deposit = $1000
Each month cost = $1200
Let,
x be the number of months.
A(x) = 1000 + 1200x
Apartment B;
Security deposit = $1500
Each month cost = $1175
B(x) = 1500 + 1175x
The cost will be same when the functions are equal, therefore,
A(x) = B(x)
Dividing both sides by 25
It will take 20 months for the cost to be same.
Keywords: function, division
Learn more about functions at:
#LearnwithBrainly
Answer:
- 10000 people paid $12.00 each for clubhouse seats and
- 26000 people paid $5.00 each for grandstand seats.
Step-by-step explanation:
The question is asking for a system of equations, which make explanations easy. :)
Define the variables. Setting to the number of clubhouse seats sold and
to the number of grandstand seats sold will be sufficient. The "let statement[s]" will be:
- Let
be the number of clubhouse seats sold.
- Let
be the number of grandstand seats sold.
The number of equations shall be no less than the number of variables for the solution to be unique. There are two variables. It will take at least two equations to find a unique solution.
Everyone at the race need a seat. The number clubhouse seats plus the number of grandstand seats shall be the same as the number people at the race. There were 36,000 people. Therefore the first equation shall be:
.
Every clubhouse seat will add $12.00 to the receipt. clubhouse seats will add $
to the receipt. Similarly,
grandstand seats will add $
to the receipt. The two values shall add up to $250,000.
Drop the dollar sign to get the second equation:
.
Hence the system:
.
Solve this system.
The first non-zero coefficient in equation is already one. That's the coefficient for
. Use multiples of equation
to get rid of
in other equations (equation
in this case.)
times equation
is
.
Add to
to get:
.
Divide both sides by -7 to get:
.
Add -1 times this equation to equation to get:
.
That is:
.
In other words,
- 10000 clubhouse seats were sold, and
- 26000 grandstand seats were sold.