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Questions in Grade High-school

[Answered] 50 milligrams to grams. 50 mg = ? g

[Answered] Simplify the expression by using distribution: $7 y x(-9 y-3)$

[Answered] Find the domain of [tex]f ( x )[/tex]. [tex]f(x)=\sqrt{6-2 x}[/tex]

[Answered] $(4 x^2+6 x-10)-(2 x^2-8 x^{-4})$

[Answered] Given [tex]$\sin \theta=\frac{3}{5}$[/tex] and [tex]$\cos \theta=\frac{4}{5}$[/tex], what is [tex]$\tan \theta$[/tex]? Report your answer in simplest form.

[Answered] Terry is trying to place a satellite dish on the roof of his house at the recommended height of 30 feet. His house is 32 feet wide, and the height of the roof can be described by the function [tex]$h(x)=-\frac{3}{2}|x-16|+24$[/tex], where [tex]$x$[/tex] is the distance along the width of the house. Where should Terry place the dish?

[Answered] NaCl has a [tex]$\Delta H_{\text {fus }}=30.2 kJ / mol$[/tex]. What is the mass of a sample of NaCl that needs 732.6 kJ of heat to melt completely? Use [tex]$q=n \Delta H$[/tex].

[Answered] What is the value of the expression below when [tex]$y=9$[/tex]? [tex]$y^2+3 y-4$[/tex]

[Answered] Evaluate: $-4+2\left[-2-8\left((-6)^2+4\right)\right]$

[Answered] Evaluate the expression. $42 \div 2-3 \times 4$