Solve:
S=1/2(a+b)x
please provide steps

Remove parentheses.

s

=

1

2

⋅

(

(

a

+

b

)

x

)

Remove parentheses.

s

=

1

2

⋅

(

(

a

+

b

)

x

)

Simplify

1

2

⋅

(

(

a

+

b

)

x

)

.

Apply the distributive property.

s

=

1

2

⋅

(

a

x

+

b

x

)

Apply the distributive property.

s

=

1

2

(

a

x

)

+

1

2

(

b

x

)

Multiply

1

2

(

a

x

)

.

s

=

a

x

2

+

1

2

(

b

x

)

Multiply

1

2

(

b

x

)

.

s

=

a

x

2

+

b

x

2

Step-by-step explanation:

21/58.

hope to be marked brainliest

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral