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Questions in Grade College

[Done] Use the special product formula to expand the following expression completely: $(2a+3b)^3$

[Done] How does the graph of $y=3^{-x}$ compare to the graph of $y=\left(\frac{1}{3}\right)^x$? A. The graphs are the same. B. The graphs are reflected across the $x$-axis. C. The graphs are reflected across the $y$-axis.

[Done] What is the mean of the following set of data values? 487.2, 674.2, 23.3, 341.1, 56.8. Give your answer as a decimal number correct to two decimal places.

[Done] Which is not a temperature control? A. ocean currents B. cloud cover C. geographic position D. nitrogen

[Done] Explain earthing practices on apparatus.

[Done] Solve for b. $b=[?]$ Law of Sines: $\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}$

[Done] Which statement describes the location of a chromosome? A. in the DNA B. in a nucleotide C. in the nucleus D. in a gene

[Done] If $\lambda x^2-10 x y+12 y^2+5 x-16 y-3=0$ represents a pair of straight lines, the value of $\lambda$ is: a) -1 b) -3 c) -3 d) -7

[Done] Fill in the blank with the correct inequality symbol. State which property of inequalities is being utilized. If [tex]\frac{1}{5} x \leq 2[/tex], then [tex]x[/tex] [ ] 10. Which of the following properties is being utilized? A. Multiplication Property B. Addition Property

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