Questions in Grade College

Questions in Grade College

[Free] Write [tex]$\frac{7}{5}+\frac{2}{3 r}$[/tex] as a single fraction in its simplest form.

[Free] An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

[Free] $f(x)=(2 x+5)(x+3)(3 x-10)(2 x-8)$ has zeros at $x=-3$, $x=-\frac{5}{2}, x=\frac{10}{3}$, and $x=4$. What is the sign of $f$ on the interval $-\frac{5}{2}

[Free] [tex]\sqrt{\frac{81}{121}}[/tex]

[Free] Convert 88 square yards to square meters (to the nearest tenth).

[Free] A parabola has a vertex at the origin. The focus of the parabola is located at ( $-2,0$ ). Which is the equation for the directrix related to the parabola? A. $y=2$ B. $x=2$ C. $y=-2$ D. $x=-2$

[Free] Consider the composite function [tex]f(f(x))=\sqrt{\frac{1}{x^2-3}}[/tex]. If [tex]g(x)=x^2-3[/tex], what is [tex]f(x)[/tex]? [tex]f(x)=\sqrt{\frac{-1}{x}}[/tex] [tex]f(x)=\sqrt{\frac{-1}{x+6}}[/tex] [tex]f(x)=\sqrt{\frac{1}{x}}[/tex] [tex]f(x)=\sqrt{\frac{1}{x+6}}[/tex]

[Free] Simplify. Write your response in $a+b i$ form. $\frac{7-2 i}{-9+5 i}=$ $\square$

[Free] Read the sentence. My little brothers like to watch "The Peppy Pirates" on TV, and they drive me crazy!

[Free] Credit life insurance is usually written as what type of policy? A. Increasing term B. Decreasing term C. Adjustable life D. Whole life