As Tia solved the system of equations below, she transformed matrices at different steps during the process. -a-b+20-
2a+b+c=2
-3a+2b+36-7
She noted the following matrices
|
II
IV
0
0
0
-1
-1
1 1
-2
-7
0
1
0
-1
0
-16
1 1 0 -1
0 1 0 -1
0 0 1 3
0
0 1
G
-3
2
0 0 22
66
In which order should the matrices be arranged when solving the system from start to finish?
OI, IV, III, II
O II, III, IVI
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80 the answer is 80

step-by-step explanation:

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock