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Questions in Grade High-school

📝 Answered - If $(x+8)$ is a factor of $f(x)$, which of the following must be true? A. Both $x=-8$ and $x=8$ are roots of $f(x)$. B. Neither $x=-8$ nor $x=8$ is a root of $f(x)$. C. $f(-8)=0$ D. $f(8)=0

📝 Answered - Fill in the blank below with the word that best completes the sentence. Natural selection leads to __________ a process of change in a population over time.

📝 Answered - EXT $x+x+\operatorname{seg} x+\frac{1}{4} x$ the follow Graf Loon modifies where $322+2 x^2+5 \leq x^2$

📝 Answered - The magnitude of an earthquake, [tex]$R$[/tex], can be measured by the equation [tex]$R=\log \left(\frac{A}{T}\right)+D$[/tex], where [tex]$A$[/tex] is the amplitude in micrometers, [tex]$T$[/tex] is measured in seconds, and [tex]$D$[/tex] accounts for the weakening of the earthquake due to the distance from the epicenter. If an earthquake occurred for 4 seconds and [tex]$D=2$[/tex], which graph would model the correct amount on the Richter scale?

📝 Answered - Which of the following BEST describes the impact of specificity on the components of skill-related fitness? A. Specificity improves all dimensions of skill-related fitness simultaneously. B. Little training is required to improve skill-related fitness. C. Specificity targets particular skill-related fitness components for improvement. D. Practicing skills specific to a sport improves all sports skills.

📝 Answered - Which technology has been commonly utilized by scientists to manipulate heritable information by separating DNA fragments into a unique pattern that can be compared to DNA fragments? A. Gel electrophoresis B. Gene cloning C. Artificial selection D. Restrictive enzyme analysis

📝 Answered - The area of a rectangular plot of land is [tex]$\left(x^2+13 x+40\right)$[/tex] sq. m. (i) Find the length and breadth of the land. (ii) If the length and breadth of the land are reduced by [tex]$2 / 2 m$[/tex] respectively, find the new area of the land.

📝 Answered - What is the vertex form of the equation of a parabola, given that the standard form is [tex]$y=x^2-8 x+29$[/tex]? A. [tex]$y=(x-4)^2+18$[/tex] B. [tex]$y=(x-4)^2+13$[/tex] C. [tex]$y=(x-4)^2+28$[/tex] D. [tex]$y=(x+4)(x-4)+13$[/tex]

📝 Answered - A sum of money is invested at $12 \%$ compounded quarterly. About how long will it take for the amount of money to double? Compound interest formula: [tex]V(t)=P\left(1+\frac{r}{n}\right)^{n t}[/tex] [tex]t=[/tex] years since initial deposit [tex]n=[/tex] number of times compounded per year [tex]r=[/tex] annual interest rate (as a decimal) [tex]P=[/tex] initial (principal) investment [tex]V(t)=[/tex] value of investment after [tex]t[/tex] years A. 5.9 years B. 6.1 years C. 23.4 years D. 24.5 years

📝 Answered - Which of the following BEST represents the causes of stiff muscles? A. Stiff muscles only result from overwork. B. Stiff muscles only result from prolonged periods of inactivity. C. Stiff muscles result from both over-and underworking them. D. Stiff muscles are mostly the result of painful injuries.