17) 
18) 
19) 
20) 
Step-by-step explanation:
17) The difference between a number and 8 is 11
Let number = x
then the equation will be:

Solving:


18) Nine less than a number is five.
Let number = x
then the equation will be:

Solving:

19) Seven is equal to a number plus 6
Let number = x
then the equation will be:

Solving:

20) The sum of a number and -4 is -18
Let number = x
then the equation will be:

solving:

Keywords: Algebraic Expressions
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Because completementary angles add up to 180 degrees (angle 3 and angle 4)
and interior angles of a triangle will also add up to 180 degrees
if you compare these two facts, then angle 4 equals the 2 non adjacent interior angles
Answer:The taxi ride that is m miles long would cost as follows: 4 + m
Step-by-step explanation:
Answer:
10 is the answer of 35 -25 is 15
Answer:
21 books are on each shelf.
Step-by-step explanation:
To solve this you need to divide 130 and 6 so you should get 21 with a remainder of 4 which is the amount of books on each shelf and the amount of books that are left over.
I hope this helps :D