There was originally 7.8 liters of water in the pitcher
Answer:
C
Step-by-step explanation:
5 1/2 pages in 12 minutes
There are 5 sets of 12 minutes in 1 hour
5 1/2 x 5 = 27 1/2
Therefore she would read 27 1/2 pages in 1 hour
Thats essentially how i did it - sorry if its not a very good explanation.
3(2+q)+15
First you distribute 3 with 2 and q
(3)(2)+(3q)+15
And that gives you 6+3q+15
Next you combine like terms
6+3q+15
(3q)+(6+15) leave 3q the way it is and then add 6+15
And the answer is 3q+21
Answer:
The height of the building is 
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle ABC

we have

substitute and solve for BC


Find the height of the building
The height of the building (h) is equal to

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.