See a solution process below: Explanation: First, evaluate the expression within the parenthesis: \displaystyle{4}{\left[{9}-{\left({\left({5}\right)}-{\left({7}\right)}\right)}\right]}\Rightarrow ...

See the entire simplification process below: Explanation: First, rewrite the expression to group common terms, in this case constants and variables: \displaystyle{\left({9}\times-{2}\times{3}\right)}{\left({c}{d}\right)}\to ...

Finding the distance, midpoint, slope, equation and the x y-intercepts of a line passing between the two points p1 (4,-2) and p2 (8,-9)The distance (d) between two points (x1,y1) and (x2,y2) is given ...

4-2p=2 One solution was found :                   p = 1 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ...

A) They mean the fraction f(x)=\dfrac{ax^2-7x+5}{5x^2-7x+a} can attain any real value. B) A quadratic polynomial has a constant sign or is 0 if and only if its discriminant is non-positive. C) ...

You've computed correctly, but interpreted the number incorrectly. What you've found is the probability that someone is willing to wait at most 7 hours; the probability you want is 1 - 0.9495 = 0.0505 ...