Answer:
Step-by-step explanation:
We are given that vector space of all symmetric matrix
M(R)={
where a,b,c,d,e,f,g,h,i}
Let A=
A'=
A is symmetric
Then A'=A
=
a=a , e=e, i=i
a-a=0 , e-e=0, i-i=0
b=d, c=g ,f=h
Hence, the matrix
Therefore, the basis are
There are three elements to generate an element of vectors of all symmetric matrix matrix
=
30k + 70 = 20k + 80
30k - 20k = 80 - 70
10k = 10 / : 10
<u>k </u><u>=</u><u> </u><u>1</u>
70%
i found that by just multiplying 50 by .7
If <5=42 you multiply 5 by 8.4=42
so m <4 is going to be 33.6
4X8.4=33.6
Answer:
the answer is C. 100°
Step-by-step explanation:
The known angle is supplementary with angle A (Look at the attachment), that means that the sum of the known angle and A is 180°, therefore the value of angle A is 80°
then A and B are corresponding angles, which means that they have the same value, that happens because <em>p</em> and <em>q</em> are parallels and both cut line <em>n</em> in the same way. the value of the angles B is 80° too.
Angles B and C are corresponding too, so the value of the angle C is 80°.
Finally angles C and X are supplementary too for which the sum of X and C (80°) is 180°, <em>so the value of X is 100°</em>