71/5 - 6 2/5=
a. 1 1/5
b. 1 4/5
c. 13 3/5
d. 4/5

4/5

Step-by-step explanation:

Simplify the following:

7 + 1/5 - (6 + 2/5)

Put 6 + 2/5 over the common denominator 5. 6 + 2/5 = (5×6)/5 + 2/5:

7 + 1/5 - (5×6)/5 + 2/5

5×6 = 30:

7 + 1/5 - (30/5 + 2/5)

30/5 + 2/5 = (30 + 2)/5:

7 + 1/5 - (30 + 2)/5

30 + 2 = 32:

7 + 1/5 - 32/5

Put 7 + 1/5 - 32/5 over the common denominator 5. 7 + 1/5 - 32/5 = (5×7)/5 + 1/5 - 32/5:

(5×7)/5 + 1/5 - 32/5

5×7 = 35:

35/5 + 1/5 - 32/5

35/5 + 1/5 - 32/5 = (35 + 1 - 32)/5:

(35 + 1 - 32)/5

35 + 1 = 36:

(36 - 32)/5

| 3 | 6

- | 3 | 2

| 0 | 4:

 4/5

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

answer: idk

step-by-step explanation: