Using the Pythagorean theorem we have (hypotenuse)^2 = (base)^2 +(side)^2
so (side)^2 =(20)^2- (8)^2 =336 and now side is square root of 336 = 18.33
answer is 18..33
Answer
B and A
Step-by-step explanation:
Answer:
A solution that results in a false statement when substituted back into the original equation.
Step-by-step explanation:
An extraneous solution is one that arises in a solution of equations, but which on closer inspection is not a solution to the original equation. Therefore, they imply an error in the development of the solution of the equation, so they cannot be taken as a valid solution since, when replacing the result with the missing variable, the equation does not obtain the desired result.
Answer:
- f⁻¹(x) = 2x - 8
- f⁻¹(4) = 0
Step-by-step explanation:
You can find an inverse function by interchanging x and y, then solving for y.
Original function:
y = (1/2)x +4
With x and y interchanged:
x = (1/2)y +4
Subtracting 4 gives ...
x -4 = 1/2y
Multiplying by 2 gives ...
2x -8 = y
Then the inverse function is written ...
f⁻¹(x) = 2x - 8
Evaluating this for x=4, we get ...
f⁻¹(4) = 2·4 -8 = 0
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It looks like your answer boxes are filled with ...
The formula for the area of a trapezoid is Area = (top + bottom)/2 x height
Using the given information we can solve for x:
234 = (20+32)/2 * X
234 = 52/2 * X
234 = 26 * X
X = 234/ 26
X = 9 units.
The answer is B.