V=u+at to find the velocity, when the initial velocity is 3m/s
the acceleration is 1.5m/sx2
the time is 7 seconds

108 m/s

Step-by-step explanation:

Given,

Initial velocity ( u ) = 3 m/s

Acceleration ( a ) = 15 m/s^2

Time ( t ) = 7 seconds

To find : Final velocity ( v ) = ?

Formula : -

v = u + at

v

= 3 + ( 15 ) ( 7 )

= 3 + 105

= 108 m/s

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

according to egenuity the answer is

step-by-step explanation:

d. 344.22