In matrix form, the system is given by
I'll use G-J elimination. Consider the augmented matrix
• Multiply through row 1 by -1.
• Eliminate the entries in the first column of the second and third rows. Combine -2 (row 1) with row 2, and -3 (row 1) with row 3.
• Eliminate the entry in the second column of the third row. Combine -5 (row 2) with row 3.
• Multiply row 3 by 1/3.
• Eliminate the entry in the third column of the second row. Combine row 2 with row 3.
• Eliminate the entries in the second and third columns of the first row. Combine row 1 with row 2 and -1 (row 3).
Then the solution to the system is
If you want to use G elimination and substitution, you'd stop at the step with the augmented matrix
The third row tells us that . Then in the second row,
and in the first row,
8 people = $2850 for one night
1 person=$356.25 for one night
4 people = $356.25×4=$1425
7 nights=$1425×7=$9975
3 people=$356.25×3=$1068.75
8 nights=$1068.75×8=$8550.
Answer:
10 centimeters
Step-by-step explanation:
The radius is 1/2 of the diameter
Answer:
area of traingle=1/2(sin130×AB×AC)
85×3=sin130×AB×AB
255=76×AB²
255/76=AB²
√332.88=AB
AB=18.24
AC=18.24
Step-by-step explanation:
Hope this helps.