I need help really bad its due soon and i have work tomorrow ill give you a good rating i just really need help

Step-by-step explanation:

We are given a complex number of the form

a

+

i

b

and we need to compute the absolute value. Absolute value is always positive and it cannot be less than 0.

To compute the absolute value of a complex number, we'll use the rule

|

a

+

b

i

|

=

√

(

a

+

b

i

)

(

a

−

b

i

)

=

√

a

2

+

b

2

|

−

4

−

2

i

|

We know that

|

a

+

b

i

|

=

√

(

a

+

b

i

)

(

a

−

b

i

)

=

√

a

2

+

b

2

See full answer below.

Choice 2

Step-by-step explanation:

z = - 4 - √2 i

|z|  = √((-4)²+(√2)²) =√(16+2)=√18=3 √2

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,