Answer:
use a translation
Step-by-step explanation:
sorry
Answer: 3x - 9
Step-by-step explanation: "9 less than three times a number" does not mean 9 minus three times a number, less than actually switches the order around so that 9 less than three times a number actually means three times a number minus 1 which can be read as 3x - 9.
one
laisha
two
2 miles
three
8 miles in 40 minutes = 12 miles per hour
5 miles in 30 minutes = 10 miles per hour
workings
60/40=1.5
1.5x8=12
60/30=2
2x5=10
method
you divide the 60 by however many minutes, then times that by the amount of miles
Step-by-step explanation:
5x + 13 = 1/3(9x – 6) + 7x
5x + 13 = 3x-2+7x
5x-3x= -2-13
2x= -15
x= -7.5
