5280 feet per 1 mile
40 times 5280=211200
211200 feet per hour
Hi
Bhrkhgabdjvdlsihsldvasdlwdwlij
Answer:
y=5x-11
Step-by-step explanation:
parallel lines have the same slope 5
y-4=5(x-3)
y-4=5x-15
y=5x-15+4
y=5x-11
Let the number of females = x. This means the number of males in the class is x+15.
Put the two together to get x + (x+15) = 31. Simplify to 2x + 15 = 31. Subtract 15 on both sides to get 2x = 16. Divide by 2 on both sides to isolate the x to get x = 8.
There are 8 females in the class meaning there are 23 males in the class.