Questions in Grade College

Questions in Grade College

[Free] Is magnesium a metal or a nonmetal? How many valence electrons does a magnesium atom have?

[Free] A survey was taken of children between the ages of 3 and 7. Let A be the event that the person has 2 siblings, and let B be the event that the person does not have a pet. Which statement is true about whether A and B are independent events? A. A and B are independent events because [tex]P(A | B) = P(A)=0.18[/tex]. B. A and B are independent events because [tex]P(A | B) = P(A)=0.4[/tex]. C. A and B are not independent events because [tex]P(A | B) =0.4[/tex] and [tex]P(A)=0.18[/tex]. D. A and B are not independent events because [tex]P(A | B) =0.18[/tex] and [tex]P(A)=0.4[/tex].

[Free] Find the mean, [tex]$\mu$[/tex], for the binomial distribution which has the stated values of n and p. Round answer to the nearest tenth. [tex]$n=37 ; p=0.2$[/tex]

[Free] Multiply the matrices, then enter the value of $A_{21}$ of the resulting matrix. $\left[\begin{array}{cc} -3 & 4 \\ 2 & 7 \end{array}\right]\left[\begin{array}{ll} 0 & 2 \\ 1 & 0 \end{array}\right]=A$

[Free] Fiona wrote the predicted and residual values for a data set using the line of best fit [tex]y=3.71 x-8.85[/tex]. | x | Given | Predicted | Residual | |---|---|---|---| | 1 | -5.1 | -5.14 | 0.04 | | 2 | -1.3 | -1.43 | -0.13 | | 3 | 1.9 | 2.28 | -0.38 | | 4 | 6.2 | 5.99 | 0.21 | Which statements are true about the table? Select three options. A. The data point for [tex]x=1[/tex] is above the line of best fit. B. The residual value for [tex]x=3[/tex] should be a positive number because the data point is above the line of best fit. C. Fiona made a subtraction error when she computed the residual value for [tex]x=4[/tex]. D. The residual value for [tex]x=2[/tex] should be a positive number because the given point is above the line of best fit. E. The residual value for [tex]x=3[/tex] is negative because the given point is below the line of best fit.

[Free] How did the Emancipation Proclamation and Militia Act benefit the Union war effort? A. They made it possible for Northern women to serve in the military. B. They enabled thousands of African Americans to join the Union army. C. They helped convince American Indians in the South not to support the Confederacy. D. They made it more difficult for Southern plantations to provide food for the Confederacy.

[Free] Multiply. $\frac{3 b c}{2 c^4} \cdot \frac{8 c}{15 b}$ Simplify your answer as much as possible.

[Free] By definition, what type of fatty acid has double bonds? A. saturated B. unsaturated

[Free] How long does it take a person to fall 64 feet? A. 1/3 second B. 2 seconds C. 10 seconds D. 60 seconds

[Free] Why is partitioning a directed line segment into a ratio of $1: 3$ not the same as finding $\frac{1}{3}$ the length of the directed line segment? A. The ratio given is part to whole, but fractions compare part to part. B. The ratio given is part to part. The total number of parts in the whole is $3-1=2$. C. The ratio given is part to part. The total number of parts in the whole is $1+3=4$. D. The ratio given is part to whole, but the associated fraction is $\frac{3}{1}$.