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Questions in Grade High-school

[Answered] The value of a computer depreciates with age, as shown in the table. Value of a Computer | Age of computer (years) | Value of computer ($) | | :---------------------- | :-------------------- | | 0 | 1,600.00 | | 1 | 1,280.00 | | 2 | 1,024.00 | | 3 | 819.20 | | 4 | 655.36 | Which function represents the value of a computer after [tex]$t$[/tex] years? A. [tex]$f(t)=1,600-226.16 t$[/tex] B. [tex]$f(t)=1,600-320 t$[/tex] C. [tex]$f(t)=1,600(0.2)^t$[/tex] D. [tex]$f(t)=1,600(0.8)^t$[/tex]

[Answered] How is the equilibrium constant of a reaction determined? The molarity of products is multiplied by the molarity of reactants.

[Answered] Ted is a single guy who's living the good life. The spreadsheet below shows Ted's cash flow for a month. | | A | B | |---|-----------------------|--------| | 1 | Cash Inflows | | | 2 | Disposable income | $5,000 | | 3 | Interest on deposits | $0 | | 4 | Income from investments | $225 | | 5 | Total Cash Inflow | $5,225 | | 6 | | | | 7 | Cash outflows | | | 8 | Rent | $3,000 | | 9 | Utilities | $250 | | 10| Satellite dish | $175 | | 11| Cell phone plan | $135 | | 12| Car lease payments | $385 | | 13| Groceries | $200 | | 14| Insurance | $380 | | 15| Recreation | $700 | | 16| Total Cash Outflow | $5,225 | Based on his monthly cash flow, explain what part of Ted's financial plan might be missing and why.

[Answered] $3.4^x+\frac{9^{x+2}}{3}=6.4^{x+1}-\frac{9^{x+1}}{2}$

[Answered] As the human population grows, what happens to our natural-resource requirements? A. They increase. B. They decrease. C. They do not change. D. They go in cycles.

[Answered] Solve the quadratic equation: [tex]x^2-2 x+6=0[/tex] A. [tex]x=2 \pm \sqrt{20}[/tex] B. [tex]x=2 \pm \sqrt{28}[/tex] C. [tex]x=-2 \pm \sqrt{28}[/tex] D. no real solution

[Answered] $7 \sqrt{3}-2 \sqrt{2}+3 \sqrt{2}+5 \sqrt{3}$

[Answered] Which represents the solution of $-9.5+6 x \geq 42.1$ using interval notation? A. ( $8.6, \infty$ ) B. [8.6, $\infty$ ) C. ( $\infty, 8.6$ ) D. ( $\infty, 8.6$ ]

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

[Answered] This table shows how many male and female students attended two different movies. What is the probability that a randomly chosen person from this group is female? Round your answer to two decimal places. \begin{tabular}{|l|c|c|c|} \hline & Action & Drama & Total \\ \hline Male & 105 & 124 & 229 \\ \hline Female & 99 & 151 & 250 \\ \hline Total & 204 & 275 & 479 \\ \hline \end{tabular} A. 0.25 B. 0.21 C. 0.52 D. 0.43