Please help i so t understand

Step-by-step explanation:

a=2

b=-4

lxl=absolute values

absoulte values are the distance away from 0.

In this case the absolute value of -4, is 4.

Plug in the values:

(sqrt 2^3-7)+l-4l

(sqrt8-7) +4

(sqrt1)+4

1+4

5

Exact Form: 2 sqr root 2 -3  Decimal Form: -0.171578287

Step-by-step explanation:

Hope this helps!!! :)

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.