Answer:
The right triangle: The right triangle has one 90 degree angle and two acute (< 90 degree) angles. Since the sum of the angles of a triangle is always 180 degrees... The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.
Step-by-step explanation:
Since <em>a</em> is the final altitude after <em>t</em> minutes, we can plug in 21,000 for <em>a</em> in the given equation.
21,000 = 3400t + 600
Solve for t.
20,400 = 3400t
t = 6 minutes
Let child admissions be x and adult admissions be y. We can then use the information given to form a system of equations and solve that system.
The first equation is based on the information about the money made.
5.50x+8.60y=726.40
The second equation is based on the fact that twice as many adult tickets as child tickets were sold.
y = 2x
Since we have an equation equal to one of the variables, substitution will be the easiest way to solve this system. This is when we replace the variable of an equation with its value in the other.
5.50x+8.60y=726.40
5.50x+8.60(2x)=726.40
5.50x+17.2x = 726.40
22.7x = 726.40
x = 32
The number of children tickets sold was 32.
Extra:
To find the number of adult tickets can be found by plugging in the known value we found and solving for the other unknown.
y = 2x
y = 2(32)
y = 64
The number of adult tickets sold was 64.
Answer:
24 kilometers
Step-by-step explanation:
1.2 kilometers per minute; 12 kilometers
Step-by-step explanation:
We know that 60 minutes makes 1 hour.
Therefore, to convert the speed to kilometers per minute, we simply divide 72 kilometers per hour by 60 minutes:
72 / 60 = 1.2 kilometers per minute.
Distance is given as speed multiplied by time.
Therefore, in 10 mins, the car travels:
1.2 * 20 = 24 kilometers.
