Answer:
75
Step-by-step explanation:
If it is 20% less, that means 60 is 80% of whatever the number is we are trying to find. Therefore, multiply 60 by 100/80.
60 x 100/80 = 75
-4
Step-by-step explanation:
(n + 5)2 for n = -7
= (-7 + 5)2
= (-2)2
= -4
Another way :
(n + 5)2
= 2n + 10
= 2(-7) + 10
= -14 + 10
= -4
Answer:
z = 5/2y -1
Step-by-step explanation:
We observe that z has ...
- 1 added
- the sum multiplied by 2/5
To solve for z, we undo these operations in reverse order.

16 is increased by 25% becoming 20. 4 is 25% of 16.