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20 of 143, If 7^x+9 = 95, x is 3. - 1, 2
If 3^x-7 = 2⁄11, x is 8. - 1, 2
If 5^x+11 = 625, x is 2. - 1, 2
If 2^x-2 = 4, x is 3. - 1, 2
If 6^x+2 = 216, x is 3. - 1, 2
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(20 of 143). 25. Write the following as a quotient of two polynomials. a. y/(x + 2) c. x/(x - 2) (21 of 143) , b. 3/(x - 3) d. 8/(x + 4)
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20 of 143. 6. An obstetrician has an appointment with a pregnant patient who is 22 years old. Suppose that there is a 1/400 chance that her baby will have Down syndrome (Trisomy 21).
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20 of 143. Find the exact value of the trigonometric expression without using a calculator. 17. sin 45°cos 45° + cos 45°sin 45° 18. tan θ · cot θ, for θ ≠ 90°, 180°, etc.
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20 of 143. 69. 3 x + 6 = 21 70. 2( x - 5) = 12 71. 4(2x + 1) = 28 72. 3(x - 2) = 15 73. 5(x + 3) = 30 74. 6(2x - 1) = 36 75. 7(x - 3) = 28 76. 8(3x + 2) = 40
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20 of 143. "Northampton Community College. Since 1968. Mathematics Department. MAT130: College Mathematics". (p. 20 of 143)
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20 of 143. For the given rational expression, find the value of the variable that makes the fraction undefined. 1 x 2 x + 2 2. x 3. x = -1 4. x = 1 5. x = 2 6. x = -2
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20 of 143. 9. Find the slope of the line through the points (2, 5) and (5, 11). 10. Find the slope of the line y = 2x - 5. 11. Find the slope of the line y = 3. 12. Find the slope of the line x = 4.
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20 of 143. 11. 4x - 15 12. 3y + 17 13. 8x - 21 14. 2y - 5
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20 of 143. The formula to calculate simple interest is I = prt. I is the interest. p is the principal. r is the interest rate (as a decimal). t is the time in years. For a CD with a balance of
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