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To eliminate the x terms in the system
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you would have to: |
| | A) | …add twice the first equation to three times the second equation. |
| | B) | …subtract twice the second equation from the first. |
| | C) | …add twice the second equation to the first. |
| | D) | …subtract the second equation from the first. |
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| 2 | |
To eliminate the y terms in the system
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key5_3_q2.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]>
you would have to: |
| | A) | …subtract two times the second equation from the first, |
| | B) | …subtract the second equation from twice the first. |
| | C) | …add the first equation to two times the second. |
| | D) | …add the two equations. |
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| 3 | |
Solve the linear system below by elimination:
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| | A) | (x, y) = (–2, –1) |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key5_3_q3_b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070977682/448198/mhr_fom10_key5_3_q3_c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>]]> |
| | D) | (x, y) = (–1, –2) |
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Use elimination to solve this problem: Two planes 2475 km apart leave simultaneously heading toward each other. The first flies at 375 km/h; the second flies at 525 km/h. To the nearest minute, how long will it take for the two planes to pass each other? |
| | A) | 16 hours and 30 minutes |
| | B) | 4 hours and 90 minutes |
| | C) | 2 hours and 45 minutes |
| | D) | 1 hour and 23 minutes. |
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Use elimination to solve this problem: Ali has twice as many quarters as dimes, a total of $4.20. How many quarters does Ali have? |
| | A) | 0.14 quarters |
| | B) | 7 quarters |
| | C) | 9 1/3 quarters |
| | D) | 14 quarters |
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