Answer:
Hello! answer: 85
Step-by-step explanation:
68 × 68 = 4624
51 × 51 = 2601
4624 + 2601 = 7225
√7225 = 85
85 × 85 = 7225 therefore c = 85 Hope that helps!
1.
C= 3.14 * 9
C= 28.26
The circumference is 28.3 cm......
2.
C=3.14 * (2*13)
C=3.14 * 26
C= 29.14
The circumference is 19.1 cm....
3(4x+2) - 6x = 5x - 5(2 + x)
3·4x+3·2-6x=5x-5·2-5·x
12x+6-6x=5x-10-5x
12x-6x-5x+5x= -10-6
6x=-16
Answer:
The answer is
![\bold{ \left[\begin{array}{c}\frac{127}{27} \\ \ &\frac{65}{18} \\ \ &\frac{76}{27}\\ \ &\frac{97}{54}\\\ \end{array}\right]}](https://tex.z-dn.net/?f=%5Cbold%7B%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%5Cfrac%7B127%7D%7B27%7D%20%5C%5C%20%5C%20%26%5Cfrac%7B65%7D%7B18%7D%20%5C%5C%20%5C%20%26%5Cfrac%7B76%7D%7B27%7D%5C%5C%20%5C%20%26%5Cfrac%7B97%7D%7B54%7D%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%7D)
Step-by-step explanation:
Given value:
![v_1=\left[\begin{array}{c}5&4&3&2\\ \end{array}\right] \\](https://tex.z-dn.net/?f=v_1%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5C%5C)
![v_2=\left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right] \\](https://tex.z-dn.net/?f=v_2%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5C%5C)
The value of 
:
![= \left[\begin{array}{c}5&4&3&2\\ \end{array}\right] \left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right]](https://tex.z-dn.net/?f=%3D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D)
The above value "
" are orthogonal vectors that is: 
from the above orthogonal basis of subspace w and the shortest distanc value of vector y:
![=\left[\begin{array}{c}3&9&-5&8\\\ \end{array}\right] \\\\](https://tex.z-dn.net/?f=%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D3%269%26-5%268%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5C%5C%5C%5C)
The value of y on 
![= \frac{\left[\begin{array}{c}3&9&-5&8\\\ \end{array}\right] \cdot \left[\begin{array}{c}5&4&3&2\\ \end{array}\right] }{\left[\begin{array}{c}5&4&3&2\\ \end{array}\right] \cdot \left[\begin{array}{c}5&4&3&2\\ \end{array}\right]} \times \left[\begin{array}{c}5&4&3&2\\ \end{array}\right] +](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D3%269%26-5%268%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5Ccdot%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%7D%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5Ccdot%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%7D%20%5Ctimes%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%20%2B)
![\frac{\left[\begin{array}{c}3&9&5&-8\\\ \end{array}\right] \cdot \left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right] }{\left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right] \cdot \left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right]} \times \left[\begin{array}{c}-4&5&-2&3\\ \end{array}\right]](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D3%269%265%26-8%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5Ccdot%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%7D%7B%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%5Ccdot%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%7D%20%5Ctimes%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%20%5Cend%7Barray%7D%5Cright%5D)
![= \frac{50}{54} \left[\begin{array}{c}5&4&3&2\\\ \end{array}\right] - \frac{1}{54} \left[\begin{array}{c}-4&5&-2&3\\\ \end{array}\right]\\\\](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B50%7D%7B54%7D%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D5%264%263%262%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%20%20-%20%5Cfrac%7B1%7D%7B54%7D%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D-4%265%26-2%263%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D%5C%5C%5C%5C)
![= \left[\begin{array}{c}\frac{127}{27} \\ \ &\frac{65}{18} \\ \ &\frac{76}{27}\\ \ &\frac{97}{54}\\\ \end{array}\right]](https://tex.z-dn.net/?f=%3D%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bc%7D%5Cfrac%7B127%7D%7B27%7D%20%5C%5C%20%5C%20%26%5Cfrac%7B65%7D%7B18%7D%20%5C%5C%20%5C%20%26%5Cfrac%7B76%7D%7B27%7D%5C%5C%20%5C%20%26%5Cfrac%7B97%7D%7B54%7D%5C%5C%5C%20%5Cend%7Barray%7D%5Cright%5D)
(AE + ED) *AE = (CB+ AB) *AB
(4 + ED) * 4 = (4+5) *5
(4 + ED) * 4 = 45
4ED +16 = 45
4ED = 29
ED = 29/4 = 7.25
AD = AE + ED
AD = 4 + 7.25
AD = 11.25
Answer is A
