<em>Answer</em>
-77
<em>Step-by-step </em>
<em> 11</em>
<em>Simplify ——</em>
<em> 2 </em>
<em>Then</em>
<em> 42 11</em>
<em> (0 - ——) • ——</em>
<em> 3 2 </em>
<em>Simplify</em>
<em> 14</em>
<em> ——</em>
<em> 1 </em>
<em>Next</em>
<em> 11</em>
<em> (0 - 14) • ——</em>
<em> 2 </em>
<em>Final result</em>
-77
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The correct answer is: [A]: " 4x³ + x² − 11x + 15 " .
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<u>Note</u>:
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(6x³ − 4x + 5) − (2x³ − x² + 7x − 10) ;
= (6x³ − 4x + 5) − 1(2x³ − x² + 7x − 10) ;
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Examine the following portion of the expression:
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" − 1(2x³ − x² + 7x − 10) " ;
= (-1 * 2x³) − (-1 * x²) + (-1 * 7x) − (-1 * 10) ;
= (-2x³) − (-1x²) + (-7x) − (-10) ;
= (-2x³) + 1x² − 7x + 10 ;
= " − 2x³ + 1x² − 7x + 10 " ;
Now, bring down the other part:
6x³ − 4x + 5 − 2x³ + 1x² − 7x + 10 ;
Combine the "like terms" :
6x³ − 2x³ = + 4x³ ;
− 4x − 7x = − 11x ;
+ 5 + 10 = + 15 ;
and bring down the:
+ 1x² ( which equals: " x² ") ;
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And rewrite:
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→ " 4x³ + x² − 11x + 15 " ;
→ which is: Answer choice: [A]: " 4x³ + x² − 11x + 15 " .
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Answer:
(-8,-4)
Step-by-step explanation:
(y,-x)
To find the answer, you would first subtract 17.19-3=14.19. Then, divide 14.19/0.11=129. He was billed for 129 minutes
(You divide 14.19/0.11 because 0.11= 11 cents
