The answers have square roots among the choices so we probably shouldn't use that calculator button.
We can't just apply the area of the trapezoid formula
where b is the bottom base, t the parallel top, and h the height, because we don't know the top t.
It will be 10 less the leg of that right triangle, which we calculate as
Now we can apply the trapezoid formula. We have
Choice b
The correct answer is x=-2
Answer:x=-1
Step-by-step explanation:Step by step solution :
Step 1 :
Equation at the end of step 1 :
8 • (2x + 9) - 56 = 0
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
16x + 16 = 16 • (x + 1)
Equation at the end of step 3 :
16 • (x + 1) = 0
Step 4 :
Equations which are never true :
4.1 Solve : 16 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation :
4.2 Solve : x+1 = 0
Subtract 1 from both sides of the equation :
x = -1
One solution was found :
x = -1
The real axis is a horizontal axis, and if it's located in above the horizontal axis, then its real part is positive -this leaves us with the option b) - the correct answer- since the real part of c) and d) is negative and would be below the x axis and the real part of a) is 0 and would be ON the x axis.
Answer:
x = 9
Step-by-step explanation:
