Questions in mathematics

Questions in mathematics

📝 Answered - Which statement best describes the function below? [tex]f(x)=2 x^2-3 x+1[/tex] A. It fails the vertical line test. B. It is a one-to-one function. C. It is not a function. D. It is a many-to-one function.

📝 Answered - Solve for a. 7a - 2b = 5a

📝 Answered - Which is equivalent to [tex]$\sin ^{-1}\left(\tan \left(\frac{\pi}{4}\right)\right)$[/tex] ? Give your answer in radians. A. 0 B. [tex]$\frac{\pi}{2}$[/tex] C. [tex]$\pi$[/tex] D. [tex]$2 \pi$[/tex]

📝 Answered - Brenton's weekly pay, [tex]$P(h)$[/tex], in dollars, is a function of the number of hours he works, [tex]$h$[/tex]. He gets paid $20 per hour for the first 40 hours he works in a week. For any hours above that, he is paid overtime at $30 per hour. He is not permitted to work more than 60 hours in a week. Which set describes the domain of [tex]$P(h)$[/tex]? A. {h | 0 ≤ h ≤ 40} B. {h | 0 ≤ h ≤ 60} C. {P(h) | 0 ≤ P(h) ≤ 1,400} D. {P(h) | 0 ≤ P(h) ≤ 1,800}

📝 Answered - [tex]$\sqrt{36.46407962}$[/tex]

📝 Answered - Solve the system of linear equations by graphing. Round the solution to the nearest tenth. [tex] \begin{array}{l} y=-0.25 x+4.7 \ y=4.9 x-1.64 \end{array} [/tex] The approximate solution to the system is ($\square$, $\square$).

📝 Answered - Solve the inequality. [tex]2(4 x-3) \geq-3(3 x)+5 x[/tex]

📝 Answered - Arc CD is $\frac{1}{4}$ of the circumference of a circle. What is the radian measure of the central angle? A. $\frac{\pi}{4}$ radians B. $\frac{\pi}{2}$ radians C. $2 \pi$ radians D. $4 \pi$ radians

📝 Answered - Simplify: [tex]$\left(7 y^2+3 x y-9\right)-\left(2 y^2+3 x y-5\right)$[/tex]

📝 Answered - Which figures can always be inscribed in a circle? Select all that apply. A. Rectangle B. Square C. Rhombus D. Trapezoid