Answer:
10y^2-6
Step-by-step explanation:
2y^2=2(4y^2-3)
2x4y^2=8y^2
2x(-3)=(-6)
2y^2+8y^2-6
10y^2-6
To find the rate in miles per hour, divide the miles by the hours.
(1 1/2 miles)/(3/5 hour) =
= 3/2 miles * (5/3 hour)
= 5/2 mph
= 2 1/2 mph
Her walking rate is 2 1/2 mph.
(4 1/2 miles) / ( 2 1/2 mph) =
= 9/2 miles / (5/2 mph)
= 9/2 * 2/5 hours
= 9/5 hours
= 1 4/5 hours
From 9:00 a.m. to 11 a.m., she has 2 hours, but she only needs 1 4/5 hours to walk, so she will make it to work on time.
Answer:
Step-by-step explanation: NS
Here are the first 3 to show you how to do them
Hmmm
that's a toughy not sure maybe the last one....
