Answer:
5mph over the speed limit
Step-by-step explanation:
In 1 hour the man drove 210/3.5=60 miles. 60mph is over the speed limit (55) by 5 mph.
Answer: B, D, and E
Step-by-step explanation: 20% of 45 equals 9 D, D, and E all equal 9
Let x be your first alloy
2/5x+7/10(30-x)=1/2(30)
4x+210-7x=150
3x=60
x=20
So, you need 20 lbs of the first alloy, and 10 parts of the second to make 30 lbs of half iron and half silver alloy!
Answer:
yards²
Step-by-step explanation:
19 feet =
yards
42 feet = 14 yards
14 ×
=
= 
If it's square rectangle rectangle square I can't know with out tĥe picture