The whole thing has to equal 90 degrees. So the expression has to equal 40 degrees. The only number that satisfies the expression is 5. (5(5)+15)=40.
Answer: 102 ft
Step-by-step explanation:
The "solution" of the equation would be a pair of numbers ... one
for 'a' and one for 'b' ... that make the equation a true statement.
If the equation has <em><u>two</u></em> variables in it, as this one does, then
you need <em><u>two</u></em> equations to find the solution.
The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above
so therefore
so we're really looking for the equation of a line whose slope is 2/3 and passes through (-4 , -3)
