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1.(a) I added 18 to 3 times a number, the result
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<p>P=9d+320 </p> <p>797.00=9d+320 </p> <p>XXX.00-XXX=9d </p> <p>XXX=9d </p> <p>477/X=d </p> <p>53=d </p> <p>The of articles is 53 </p> <p>2. X XX partly XXXXXXXX and partly varies with V. When X 40, D = XXX XXX when X = XX, D = XXX. i) Find the XXXXXXX XXXXXXXXXX D XXX V. </p> <p>D = mV + C , ( XXXXXX XXXXXXXX y = XX + b) (XX) Find D when V= 73. </p> <p>XXXX V=40, X=150 XXX = 40m + C ** XXXX V=54, X=XXX 192 = 54m + C *** XXXXXXXX ** from *** XX = 14m m = X sub XXXX ** , XXX = 120 + X C = XX D = 3V + XX X=3*XX+XX=XXX </p> <p>X.(a) X XXXXXXXXXXX XXXX for XXXXXXX oil XXX a XXXXXXXX of 1078 cm³. XX XXX height XXX XXXXXX are XXXXX, XXXXXXXXX the depth XX XXX in the tank when full (XXXX π= XX/X) </p> <p>Volume of XXXXXXXX= <img src="XXXX:///X:\Users\XXXX\AppData\XXXXX\Temp\msohtmlclip1\01\XXXXXXXXXXXXX.gif" XXX="\pi {r}^{X} h" width="34" height="15"> </p> <p>XXXX <em><b>r</b></em> XXX <em><b>h</b></em> XXX equal </p> <p>So, <em>XX<sup>2</sup>×r=1078</em> </p> <p><em>XX<sup>X</XXX>=XXXX</em> </p> <p><em>r<XXX>X</sup>=XXXX/X</em> </p> <p><em>r<XXX>X</XXX>=1078/(XX/X)</em> </p> <p><em>r<sup>X</XXX>=(XXXX/22)*7</em> </p> <p><em>r<XXX>3</XXX>=XX*7</em> </p> <p><em>r<sup>X</XXX>=X*X*7</em> </p> <p><em>r<XXX>X</sup>=X<sup>X</XXX></em> </p> <p><em>r=7</em> </p> <p><em>r=7 XXX h=7</em> </p> <p><em>Therefore, XXX XXXXX of XXX XXXX when full XX XX.</em> </p> <p>(b) Find the XXXXXXXXX XX a rectangular XXXXX which is 10m by XX. </p> <p><span class="formulacss"><i>Length (l) = XXXX</i></span> <span class="formulacss"><i>XXXXX (w) = XXX</i></span> <span XXXXX="formulacss">Perimeter XX the XXXXXXXXX = X(l + w) units </span> <span XXXXX="formulacss"><i>X = 2(10 + X)</i></span> <span class="formulacss"><i>X = X (15)</i></span> <span class="formulacss"><i>X = 30</i></span> <span XXXXX="formulacss">Thus, XXX perimeter of the rectangle XX 30 m.</span><br> <XX> </p> <p>4.Solve the equation: X-4-2/X=-X/X </p> <XXXXXX><XXX src="XXXXX://XXXXXXXXXXXX.s3.XXXXXXXXX.com/media/XXXXXXXXXXX/XXXXXX.JPG" XXXX-XX="XXXXX://XXXXXXXXXXXX.s3.XXXXXXXXX.XXX/media/attachments/XXXXXX.JPG"></XXXXXX><p><img XXX="XXXX:///X:\Users\user\AppData\XXXXX\XXXX\msohtmlclip1\01\XXXXXXXXXXXXX.jpg" width="101" XXXXXX="XX"> </p><img XXX="file:///X:\Users\XXXX\XXXXXXX\Local\XXXX\msohtmlclip1\XX\clip_image006.XXX" width="XXX" XXXXXX="XXX"> <figure><XXX XXX="file:///C:\Users\XXXX\AppData\XXXXX\XXXX\msohtmlclip1\01\clip_image008.XXX" width="12" XXXXXX="XX"></figure><p> </p> <p> </p>">
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