Answer:
What is the expression? All I see are the answers.
Step-by-step explanation:
Answer:
2.5 or 2 1/2
Step-by-step explanation:
divide 15 by 3 and you'll get 5. multiply 1/2 by 5 and you get 2.5
Answer:
36 pencils

Step-by-step explanation:
Given
Cost Price = 180
Represent the number of items by x
This implies that the cost of each item is 


Since all but 6 items were sold, the total selling price is:

This amount can be used to buy 30 more items.
So, we have:

Multiply both sides by 180


Expand brackets


Equate to 0


Expand



or 
or 
<em>Since, number of items can't be negative, we have to discard x = -210.</em>
Hence:

<em>We can then conclude that, Mr. Javier purchased 36 pencils</em>
Recall that



Answer:
13. 360 14. 1080 15. x=53 16. x=135
Step-by-step explanation:
Equation: (n-2)*180
For 13. all angles in a a quadrilateral add up to 360
For 14. 8 sides-2=6. 180*6=1080 degrees
For 15. 15+155+137=307. 360-307=53. x=53 degrees
For 16. 6 sides-2=4. 4*180=720. 90*2=180. 720-180=540. 540/4=135.
x=135
Answer:
Saved money = 0.41x
Step-by-step explanation:
x : hours Andrea works
If the 18% is subtracted from her paycheck, she still has the 82% (100 - 18)
Then after that she has:
0.82x
Now Andrea saves 50% of the remaining check (0.82x)
Saved money = 0.5(0.82x)
Saved money = 0.41x