Which expressions can be used to determine the area, in square centimeters, of the trapezoid? Select all that apply. A. 7.5⋅5−12(5⋅2)+12(5⋅2)7.5·5-12(5·2)+ 12(5·2) B. 3.5⋅5+2(12⋅2⋅5)3.5·5+2(12·2·5) C. 5(3.5+4)−5⋅25(3.5+4)-5·2 D. 7.5⋅5−12(5⋅2)7.5·5-12(5·2) E. 5⋅3.5+2⋅5

your answer is 23/2 - 13.5

step-by-step explanation:

7/2 evaluates to

multiply x and 4.5

multiply x and 1

the x just gets copied along.

the answer is x

x

4.5*x evaluates to 4.5x

multiply 3 and 4.5x

multiply 1 and x

the x just gets copied along.

x

4.5*x*3 evaluates to 13.5x

7/2-4.5*x*3 evaluates to

  + 8 =

the answer is

7/2-4.5*x*3+8 evaluates to

s

step-by-step explanation:

c

step-by-step explanation: easy math

"standard form:

3x2 + 14x − 10 = 0

solutions based on quadratic formula:

x1   = −14 − √ 142 − 4×3×(−10) /   2×3   = −14 − 2 × √ 79 /   6   ≈ −5.296

x2   = −14 + √ 142 − 4×3×(−10) /   2×3   = −14 + 2 × √ 79 /   6   ≈ 0.629