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

9.55 degrees.

step-by-step explanation:

the given angle is

1 cycle is equal to 2π radians. so 4π will be equal to two cycles.

5.166667π-4π = 1.166667π

hence, this angle goes a little more than negative x axis.

1.166667π-π= 0.166667π

hence, the reference angle is 0.166667π radians.

1 radian = 57.2958 degrees

now, in degrees, this should be equals to 9.55 degrees.