Answer:
Step-by-step explanation:
9^-5 = 9^4 x 9^-9
4-9 = -5
8/9 x 3/4
8x3 = 24
9x4 = 36
24/36 simplified is 2/3
8/9 x 3/4 = 2/3
Answer:
27
Step-by-step explanation:
Remember to follow PEMDAS. Note that, when multiplying or dividing:
1) one positive and one negative = negative number
2) two positive = positive number
3) two negative = positive number
(-7)(-5) = -7 * -5 = 35
+(-8) = +1 * -8 = -8
Subtract:
35 - 8 = 27
27 is your answer.
~
5/9 is grater than 7/12. same with 9/12, 6/7, 6/9
Replace,
x = y
Or
x = f(x)
then us stay:
x = 5y + 12
Isolate 5y
5y = x - 12
Dividing both the sides by 5
y = x/5 - 12/5
Then, replace y = f^-(x)
f^-(x) = x/5 - 12/5
Hope this helps
