3 years ago

Please help last question

Mathematics

2 answers:

Artyom0805 [142]3 years ago

7 0

so I think 37\12 is the answer to this question

Alex3 years ago

5 0

I believe the answer is 37/12. Hope this helps!

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In a 50-gram portion of cereal, 8 grams of it are sugar . Which of the following represents the percent of the 50-grams that is

Mars2501 [29]

Answer:

3) 16

8 is 16% of 50

8 0

3 years ago

Help pleaseeeee picture attached

pav-90 [236]

Answer:

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Step-by-step explanation:

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3 years ago

Find two unit vectors orthogonal to both given vectors. i j k, 4i k

Maurinko [17]

The cross product of two vectors gives a third vector $\mathbf v$ that is orthogonal to the first two.

$\mathbf v=(\vec i+\vec j+\vec k)\times(4\,\vec i+\vec k)=\begin{vmatrix}\vec i&\vec j&\vec k\\1&1&1\\4&0&1\end{vmatrix}=\vec i+3\,\vec j-4\,\vec k$

Normalize this vector by dividing it by its norm:

$\dfrac{\mathbf v}{\|\mathbf v\|}=\dfrac{\vec i+3\,\vec j-4\,\vec k}{\sqrt{1^2+3^2+(-4)^2}}=\dfrac1{\sqrt{26}}(\vec i+3\,\vec j-4\vec k)$

To get another vector orthogonal to the first two, you can just change the sign and use $-\mathbf v$ .