Answer:
37.5 miles per hour
Step-by-step explanation:
The traffic along a stretch road moves at an average speed that carried inversely as the number of cars
Average speed= k/number of cars.
When there are 1,500 cars the average speed is 45
The first step is to calculate the constant k
45= k/1500
k = 1,500 × 45
k= 67,500
Therefore the average speed when there are 1,800 cars can be calculated as follows
Average speed= 67,500/1,800
= 37.5 miles per hour
Hence the average speed is 37.5 moles per hour
Answer:
600
Step-by-step explanation:
.7x = 420
x = 420/0.7
x = 600
Answer: 27 x 3 − 270 x 2 + 900 x − 1000
Step-by-step explanation: Expand the expression.
Answer:
$30.69
Step-by-step explanation:
22.32/ 8 = 2.79
11 x 2.79 = 30.69
