I think it’s 22 but I may be wrong
Answer:
(c) ......................
Let x equal the # of child tickets
Let y equal the # of adult tickets
x + y = 84
3x + 5y = 360
Solve and state the answer. Use the substitution method to solve this system. Solve the first equation for x.
x + y = 84
x = 84 - y
Now substitute the resulting expression into the other equation and solve for y.
3( 84 - y ) + 5y = 360
252 - 3y + 5y = 360
Combine like terms
252 + 2y = 360
Subtract 252 from both sides
2y = 108
Divide by 2 on both sides
y = 54
Substitute the value of y into the equation that we solved for x, x = 84 - y
x = 84 - 54
x = 30
Therefore the answer should be, 30 childrens tickets sold and 54 adult tickets sold.
Answer: Use the formula: 2(pi)(r + 1) - 2(pi)r
In your problem, you didn't give any measurements to use, so we can't determine an exact answer. However, the given formula above would work.
The first term calculates the extended length of rope. The second term calculates the original length of rope. All you need to do is subtract them.
Online, you can find the radius of the Earth if you need an exact value. 3,959 miles
