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Questions in Grade College

[Jawaban] Consider a circle whose equation is [tex]$x^2+y^2+4 x-6 y-36=0$[/tex]. Which statements are true? Check all that apply. A. To begin converting the equation to standard form, subtract 38 from both sides. B. To complete the square for the [tex]$x$[/tex] terms, add 4 to both sides. C. The center of the circle is at ( [tex]$-2,3$[/tex] ). D. The center of the circle is at ([tex]$4,-6$[/tex]). E. The radius of the circle is 6 units. F. The radius of the circle is 49 units.

[Jawaban] In the whole number system for identifying drill bit sizes, does a No. 50 drill bit have a larger diameter than a No. 20 drill bit? A. False B. True

[Jawaban] What is produced when calcium reacts with fluorine in a synthesis reaction? [tex]Ca + F _2 \rightarrow[/tex] ? A. [tex]CaF[/tex] B. [tex]CaF _4[/tex] C. [tex]2CaF[/tex] D. [tex]CaF _2[/tex]

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

[Jawaban] 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.

[Jawaban] 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.

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

[Jawaban] Explain earthing practices on apparatus.

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

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