Evaluate 9 – b when b = 8 what’s
the answer

1

Step-by-step explanation:

9-b is the same as 9-8 because b=8. 9-8=1.

80 kilometers per hour is equal to 49.72 miles per hour.

Step-by-step explanation:

Given that the speed limit in some European cities is 80 km / h, to determine how many miles per hour is this, knowing that 1 mile is equal to 1,609 km, the following calculation must be performed:

1,609 = 1

80 = X

((80/1) x 1.609) = X

80 x 1.609 = X

49.72 = X

Thus, 80 kilometers per hour is equal to 49.72 miles per hour.