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Using Cramer's rule, what is the value of x in the system of equations below? -x-3y=-3 -2x-5y=-8 a.| -3 -3 | |_ -8-5_|=-2 -1 b.| -3 -3 | |_-8-5_|=9 -1 c.| -1 -3 | |_-2 -8_|=-2 -1 d.| -1 -3 | |_-2-8_|=9
answered
Jul 22, 2018
Mathematics
high-school
3
votes
49.8k
views
A 32.00 mL sample of an unknown H3PO4 solution is titrated with a 0.110 M NaOH solution. The equivalence point is reached when 28.23 mL of NaOH solution is added. What is the concentration of the unknown
answered
Jun 20, 2018
Chemistry
college
5
votes
213k
views
A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $155 for 100 minutes of usage and $245 for 200 minutes of usage. An equation can be written to show
answered
Oct 6, 2017
Mathematics
high-school
6
votes
169k
views
The writing of the period reflects a new national culture and identity. What do these passages suggest about the thoughts, feeling, or lives of early Americans?
answered
Oct 3, 2017
History
high-school
6
votes
132k
views
What is the solution to the system of equations graphed below? y = x - 2 y = 4x - 5
answered
Aug 7, 2017
Mathematics
high-school
7
votes
180k
views
If you've been vaccinated against measles,you won't get measles.how does that work?
answered
Mar 16, 2017
Biology
high-school
0
votes
100.0k
views
What is the unit rate in 49 points in 7 games
answered
Dec 16, 2016
Mathematics
middle-school
1
vote
195k
views
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