Step-by-step explanation:
1. Right angled triangle , scalene triangle
2. isosceles triangle, obtuse angled triangle
3. equilateral triangle
4. right angled triangle, isosceles triangle
5. scalene triangle, obtuse angled triangle
6. scalene triangle, acute angled triangle
If they sold 89 calendars over 4 weeks, the 'equation' would look like (x = average calendars sold over 4 weeks):

If you solve it, you get:

Which is equal to
22.25. Hope this helps!
Answer:
70
Step-by-step explanation: Lets say x is the integer
5,600/x=80 is the same as
5,600÷x=80.
You should then rewrite it as 5,600÷80=x
Now simplify.
x=70
Answer:It would take 1.700 hours.
Step-by-step explanation: