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What is cross-sectional data?
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What is cross-sectional data?What is cross-sectional data? ...
by MathsGee Platinum
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asked in Data Science & Statistics 2 days ago
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If \(A\) and \(B\) are \(4 \times 4\) matrices such that \(\operatorname{rank}(A B)=3\), then \(\operatorname{rank}(B A)<4\).
0 answers 6 views
If \(A\) and \(B\) are \(4 \times 4\) matrices such that \(\operatorname{rank}(A B)=3\), then \(\operatorname{rank}(B A)<4\).For each of the following, answer TRUE or FALSE. If the statement is false in even a single instance, then the answer is FALSE. There is no need to ju ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Jan 21
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Let $a, b$ and $c$ be vectors in $\mathrm{R}^{3}, \times$ denotes the cross product, . the dot product. Which of the following is false?
0 answers 10 views
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Let $a, b$ and $c$ be vectors in $\mathrm{R}^{3}$, such that $a \cdot(b \times c)=0$. Then
0 answers 11 views
Let $a, b$ and $c$ be vectors in $\mathrm{R}^{3}$, such that $a \cdot(b \times c)=0$. ThenLet $a, b$ and $c$ be vectors in $\mathrm{R}^{3}$, such that $a \cdot(b \times c)=0$. Then A. $a, b$ and $c$ are colinear B. $a, b$ and $c$ lie on t ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Jan 13
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Let $\vec{a}$ and $\vec{b}$ be non-zero, non parallel vectors. Identify proj $\vec{a} \vec{b}$ geometrically in the diagram.
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Differentiate cross sectional research from time series research.
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Work is equal to which of the following?
1 answer 34 views
Work is equal to which of the following?Work is equal to which of the following? w) the cross product of force and displacement. x) the product of force times time y) force divided by tim ...
by Digitized Wooden
(1,166 points)
asked in Physics Oct 5, 2021
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Find the negatives of (a) $u=(3,-5,-8,4)$, (b) $v=(-4,2 \pi, 0)$, (c) $0=(0,0,0,0)$.
1 answer 49 views
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In a dot and cross diagram, what does each dot and cross represent?
0 answers 92 views
In a dot and cross diagram, what does each dot and cross represent?In a dot and cross diagram, what does each dot and cross represent? ...
by MathsGee Platinum
(106,844 points)
asked in Chemistry Jun 27, 2021
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What is the determinant of the product of matrices
1 answer 67 views
What is the determinant of the product of matricesWhat is the determinant of the product of matrices $A=\left\begin{array}{ccc}2 &amp; 3 &amp; -1 \\ 0 &amp; 1 &amp; 2\end{array}\right$ and $B=\left ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Jun 16, 2021
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Find the projection of $u = <3,-12>$ onto $v = <9,2>$
0 answers 74 views
Find the projection of $u = <3,-12>$ onto $v = <9,2>$Find the projection of $u = &lt;3,-12&gt;$ onto $v = &lt;9,2&gt;$ ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Apr 12, 2021
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Find the dot product of $u = <-5,-6,-2>$ and $v = <-3,10,8>$. Are $u$ and $v$ orthogonal?
0 answers 95 views
Find the dot product of $u = <-5,-6,-2>$ and $v = <-3,10,8>$. Are $u$ and $v$ orthogonal?Find the dot product of $u = &lt;-5,-6,-2&gt;$ and $v = &lt;-3,10,8&gt;$. Are $u$ and $v$ orthogonal? ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Apr 12, 2021
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What is the relationship between area and determinant of the cross product?
1 answer 82 views
What is the relationship between area and determinant of the cross product?What is the relationship between area and determinant of the cross product? ...
by Eddie Wooden
(2,016 points)
asked in Physics Mar 29, 2021
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What is a cross product in physics?
1 answer 114 views
What is a cross product in physics?What is a cross product in physics? ...
by Eddie Wooden
(2,016 points)
asked in Physics Mar 29, 2021
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If you calculate the cross products AxB and BxA, how will the results compare?
0 answers 50 views
If you calculate the cross products AxB and BxA, how will the results compare?If you calculate the cross products AxB and BxA, how will the results compare? ...
by Student SIlver Status
(10,398 points)
asked in Mathematics Feb 7, 2021
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When you complete a cross product between two vectors, what is the nature of the result you get?
0 answers 55 views
When you complete a cross product between two vectors, what is the nature of the result you get?When you complete a cross product between two vectors, what is the nature of the result you get? ...
by Student SIlver Status
(10,398 points)
asked in Mathematics Feb 7, 2021
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The diagram shows a cross section of an anther. Which labelled part A, B, C or D contains haploid cells?
1 answer 364 views
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The diagram shows a cross section of an anther. Which labelled part A, B, C or D contains haploid cells? The diagram shows a cross section of an anther. Which labelled part A, B, C or D contains haploid cells? ...
by MathsGee Platinum
(106,844 points)
asked in Life Sciences Jun 13, 2020
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The diagram shows the cross section of an artery. Which part A, B, C or D allows the artery to stretch without bursting?
1 answer 208 views
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When I cross a donkey and a horse, a mule is produced that is sterile. What type of reproductive barrier does this represent?
1 answer 151 views
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What is a dihybrid cross?
1 answer 64 views
What is a dihybrid cross?What is a dihybrid cross? ...
by Joshua Mwanza Diamond
(46,786 points)
asked in Life Sciences May 28, 2020
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What is a monohybrid cross?
1 answer 43 views
What is a monohybrid cross?What is a monohybrid cross? ...
by Joshua Mwanza Diamond
(46,786 points)
asked in Life Sciences May 28, 2020
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Use a genetic cross to show the possible genotypes and phenotypes of their children
1 answer 210 views
Use a genetic cross to show the possible genotypes and phenotypes of their childrenColour blindness (Daltonism) is a sex-linked disorder caused by a recessive allele (Xd ). A woman who is heterozygous for normal vision married a man ...
by MathsGee Platinum
(106,844 points)
asked in Life Sciences Apr 20, 2020
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Explain (without using a genetic cross) why all their sons will be haemophiliacs.
1 answer 77 views
Explain (without using a genetic cross) why all their sons will be haemophiliacs.Haemophilia is a genetic disorder caused by a recessive allele on the X chromosome. A haemophiliac female marries a normal male. Explain (without usin ...
by MathsGee Platinum
(106,844 points)
asked in Life Sciences Apr 20, 2020
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Use a genetic cross to show why all their sons will be haemophiliacs.
1 answer 96 views
Use a genetic cross to show why all their sons will be haemophiliacs.Haemophilia is a genetic disorder caused by a recessive allele on the X chromosome. A haemophiliac female marries a normal male. Use a genetic cross t ...
by MathsGee Platinum
(106,844 points)
asked in Life Sciences Apr 20, 2020
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Draw a cross (x) on the 3-D object that can roll.
1 answer 149 views
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Draw a cross (x) on the 3-D object that can roll. Draw a cross (x) on the 3-D object that can roll.&nbsp; ...
by MathsGee Platinum
(106,844 points)
asked in Mathematics Apr 10, 2020
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