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natta225 [31]
3 years ago
7

Find the length of the longest side of this triangle. Please help me i’m begging you thanks

Mathematics
1 answer:
maks197457 [2]3 years ago
5 0

Answer:

5 is the answer

Step-by-step explanation:

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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.
6 0
3 years ago
Can someone please explain to me how to do this!? From 58 books to 65 books?
Inessa [10]

The way this question is worded is quite confusing. If all you have given is ‘58 books to 65 books’, maybe you mean a range? In that case the range would be 7. Or you could be talking about how many books it would take for 58 to get to 65. In this case, it would also be 7.


7 0
3 years ago
How is the answer 2.7
Darya [45]

Answer:

2.7

Step-by-step explanation:

Its 2.7 because if you use the calculator app on your phone or a calculator you can see that you use .09 30 times. that's why I reccomend a calculator. Or you can try cross multiplication.

3 0
3 years ago
what is 2.9+3.9 estimated, 12.99-3.95 estimated, 8.1+3.7+7.9 estimated, and 3.8+4.1+3.3 estimated answer ASAP plz
DIA [1.3K]

Answer:

7, 17, 20, 11

Step-by-step explanation:

you just round each number to the nearest whole number and then add them

3 0
3 years ago
If a polynomial doesn’t factor, it’s called _______.
ivanzaharov [21]
It would be called prime.
8 0
3 years ago
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