Another expression that is equivalent to 7/2h-3(5h-1/2) is -23/2h+3/2
Answer: 3.4
The total number of lessons to teach is 6*8.5 = 51 lessons.
15x = 51
X=3.4
Answer:

Step-by-step explanation:
We are given that

a=1

Substitute n=3 and a=1



Where 

Using the formula






By using the formula




Substitute the values


Answer:
3/5
Step-by-step explanation:
Step one:
given data
Amy saved 1/5
her brother 4/5
Required
How much more did her brother save
Step two:
let us subtract Amy's savings from her brother's
4/5-1/5
=4-1/5
=3/5