Answer:
PROOF:
Suppose that A is an invertible non singular matrix.
Then,
This shows that if A is non singular invertible matrix ad if λ is eigenvalue of A then λ⁻¹ is eigenvalue of A⁻¹.
Answer:
Step-by-step explanation:
Subtract 2 from both sides
mutliply both sides by -4, flip the inequality
Add 2x on both sideds
Subtract 8 from both sides
Divide both sides by 6
Answer:
It could be 8 or 5. I think it's 5
Step-by-step explanation:
This is a pretty weird problem. I see the DC is 10 so then one would think that it is 5. EF however is 7. I think the most logical answer would be 5. Using process of elimination, we can narrow it down to 5 and 8 but I feel that 5 makes more sense. the other 2 sides are obviously longer so 5 is most likely correct.
Answer:
Bc equals 17.
you must solve for BA and CA, because this is a isosceles triangle and isosceles have 2 equal sides.
BA = CA
then plug in what you find in for x
Answer:
Total cost=$25
Step-by-step explanation:
We can derive two expressions as follows;
Total cost for the First shipping company=Medium box charges+total additional charges
where;
Medium box charges=$20
Total additional charges=Charges per pound×number of additional pounds (n)
Total additional charges=1×n=n
replacing;
Total cost for the First shipping company=20+n....equation 1
Total cost for the second shipping company=Medium box charges+total additional charges
where;
Medium box charges=$15
Total additional charges=Charges per pound×number of additional pounds (n)
Total additional charges=2×n=2 n
replacing;
Total cost for the First shipping company=15+2 n....equation 2
Equating equation 1 and equation 2
15+2 n=20+n
2 n-n=20-15
n=5
Replace the value for n in equation 2
Total cost for the First shipping company=15+2 n....equation 2
Total cost=15+(2×5)=$25
