Answer:
The correct matrices are:
Matrix:
7 1 5
1 5 7
5 7 1
all diagonal elements of A^2 are: 7^2 + 1^2 + 5^2
Matrix:
9 18 27
27 -9 18
18 27 9
all diagonal elements of A^2 are: 9^2 + 27*18 + 18*27 or (-9)^2
Matrix:
8 1 6
6 8 1
1 6 8
all diagonal elements of A^2 are: 8^2 + 6*1 + 1*6
Answer:
2
x
+
9
y
−
2
Step-by-step explanation:
If you're just looking to simplify and/or combine like terms, here's your answer: 2
x
+
9
y
−
2
Glad I could help!!
If 1,000 = 1 x 10(3) [one times ten to the 3rd power]
and 1,000,000 = 1 x 10(6) [one times ten to the 6th power]
There would be 100,000,000 (one hundred million pennies in a million dollars) [ $1million x 100 pennies/dollar]
Then counting your zeroes would add up to 8... so...
your answer would be...
1 x 10(8) [one times ten to the 8th power]
OR
1000 000 dollars x (100 pennies / 1dollar) = 100 000 000
its 1x10E8 pennies
Answer:
321 make me brainliest
Step-by-step explanation: