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Questions in Grade College

[Jawaban] What is the correct formula that would result from the combination of the two ionic species? [tex]$Mg^{2+} \text { and } PO_4{ }^{3-}$[/tex] A. [tex]$Mg _3\left( PO _4\right)_2$[/tex] B. [tex]$Mg _2\left( PO _4\right)_3$[/tex] C. [tex]$Mg \left( PO _4\right)_3$[/tex] D. [tex]$MgPO _4$[/tex]

[Jawaban] If two $2 x 2$ matrices are inverses of each other, then multiplying them will result in what matrix below? $\left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right]$ $\left[\begin{array}{ll}1 & 1 \\ 1 & 1\end{array}\right]$ $\left[\begin{array}{ll}0 & 1 \\ 1 & 0\end{array}\right]$ $\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right]$

[Jawaban] Rationalize the denominator and simplify: [tex]$\sqrt{\frac{5}{2}}$[/tex]

[Jawaban] Solve the equation $3(x+1)-2=x+5$

[Jawaban] A parabola is represented by the equation $y^2=5 x$. Which equation represents the directrix? A. $y=-20$ B. $x=-20$ C. $y=-\frac{5}{4}$ D. $x=-\frac{5}{4}$

[Jawaban] Question 20 (5 points) Which function is the result of translating $y=x^2$ downward by 3 units and to the left by 4 units? A) $y=(x-4)^2+3$ B) $y=(x+3)^2-4$ C) $y=(x-3)^2+4$ D) $y=(x+4)^2-3$

[Jawaban] The main purpose of a cover letter is to: a. Get hired for a position b. Be called in for an interview c. Let your friends know how your job search is going d. Obtain references from your network

[Jawaban] Multiply. Simplify if possible. [tex]$(3+\sqrt{7})(3-\sqrt{7}) = \square$[/tex]

[Jawaban] A line has a slope of -2. It also passes through the point $(0,6)$. What is the equation of the line? A. $y=6 x-2$ B. $y=6 x+2$ C. $y=-2 x+6$ D. $y=-2 x-6$

[Jawaban] Simplify. Write your response in $a+b i$ form. [tex] \frac{-5+2 i}{11+10 i}=\square [/tex]