3400
Step-by-step explanation:
70×60=4200
10+20=30
70-30=40
40×20=800
4200-800=3400
Answer: 45 miles per hour
Step-by-step explanation:
Answer: 10.5cm
Step-by-step explanation: the radius is half the diameter. 21/2=10.5
Answer: B 3/10
When you add all the coins together, you get a sum of 90. To find the probability of the copper coin, you get 27/90. once simplified you get the answer 3/10.
hope this helps :)