Answer:
Yes, her calculation is correct. The value of 40% of 75 is 30.
Step-by-step explanation:
The value of 40% of 75 is

The value of
of 75 is

From the above calculation it is noticed that the value of 40% of 75 and
of 75 are same, therefore the calculation is correct and the value of 40% of 75 is 30.
Answer: evaluate it is 52
Step-by-step explanation:
Six point eight four.
(Note, you don't say, "Six point eighty-four" As it doesn't sound correct.
Cheers.
Answer:
x = 0
y = -2
Step-by-step explanation:
-5x + y = -2
x = 0
y = -2
-3x + 6y = -12
x = 0
y = -2