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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>797.XX-320=9d </p> <p>477=XX </p> <p>477/9=d </p> <p>XX=d </p> <p>The XX XXXXXXXX XX 53 </p> <p>X. D XX XXXXXX constant and partly varies with V. XXXX V XX, D = XXX and XXXX V = XX, X = XXX. i) XXXX XXX formula connecting D and X. </p> <p>D = XX + X , ( Linear XXXXXXXX y = mx + b) (ii) Find X XXXX X= XX. </p> <p>XXXX V=40, D=150 150 = XXX + C ** XXXX V=54, X=192 192 = XXX + X *** subtract ** XXXX *** 42 = 14m m = X XXX into ** , 150 = 120 + X C = XX X = 3V + 30 X=3*XX+XX=XXX </p> <p>3.(a) A cylindrical XXXX XXX XXXXXXX XXX has a capacity XX XXXX cm³. XX its height XXX radius are equal, XXXXXXXXX the depth XX XXX in the tank XXXX XXXX (XXXX π= XX/X) </p> <p>XXXXXX XX XXXXXXXX= <XXX XXX="file:///C:\XXXXX\XXXX\XXXXXXX\XXXXX\Temp\msohtmlclip1\01\clip_image002.gif" XXX="\pi {r}^{X} h" width="34" XXXXXX="XX"> </p> <p>XXXX <em><b>r</b></em> XXX <em><b>h</b></em> XXX equal </p> <p>XX, <em>πr<sup>2</XXX>×r=1078</em> </p> <p><em>XX<XXX>3</sup>=1078</em> </p> <p><em>r<XXX>X</XXX>=XXXX/X</em> </p> <p><em>r<sup>X</XXX>=XXXX/(XX/7)</em> </p> <p><em>r<sup>X</sup>=(1078/22)*X</em> </p> <p><em>r<sup>3</XXX>=XX*X</em> </p> <p><em>r<XXX>X</XXX>=7*7*X</em> </p> <p><em>r<sup>3</sup>=7<XXX>3</XXX></em> </p> <p><em>r=7</em> </p> <p><em>r=X and h=7</em> </p> <p><em>XXXXXXXXX, the XXXXX of XXX XXXX XXXX full is XX.</em> </p> <p>(b) Find XXX XXXXXXXXX of a XXXXXXXXXXX field XXXXX is XXX XX XX. </p> <p><span XXXXX="XXXXXXXXXX"><i>Length (l) = 10cm</i></span> <span XXXXX="formulacss"><i>Width (w) = XXX</i></span> <span class="formulacss">XXXXXXXXX of the rectangle = 2(l + w) XXXXX </span> <span class="XXXXXXXXXX"><i>X = X(XX + X)</i></span> <span XXXXX="XXXXXXXXXX"><i>P = X (XX)</i></span> <span class="XXXXXXXXXX"><i>P = XX</i></span> <span XXXXX="XXXXXXXXXX">Thus, the perimeter XX XXX rectangle is 30 m.</span><XX> <br> </p> <p>4.Solve the equation: X-4-2/5=-X/2 </p> <figure><XXX XXX="XXXXX://schoolsolver.XX.amazonaws.XXX/media/XXXXXXXXXXX/XXXXXX.XXX" XXXX-XX="XXXXX://XXXXXXXXXXXX.s3.XXXXXXXXX.com/XXXXX/attachments/790Xva.JPG"></figure><p><XXX XXX="XXXX:///X:\Users\user\AppData\XXXXX\XXXX\msohtmlclip1\XX\XXXXXXXXXXXXX.XXX" width="XXX" XXXXXX="XX"> </p><img XXX="file:///C:\Users\XXXX\AppData\Local\XXXX\XXXXXXXXXXXX\01\clip_image006.XXX" width="120" XXXXXX="XXX"> <XXXXXX><img XXX="XXXX:///X:\Users\user\XXXXXXX\Local\XXXX\msohtmlclip1\01\clip_image008.gif" width="XX" height="23"></figure><p> </p> <p> </p>">
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