Open with Quiz 1.1 - TS Mathematics 30-1 8. Kim solved the equation x - vx + 10 = 2 as follows. x- v x+ 10 = 2 x-2= /x+ 10 x-4r+4 = x+10 x- 5x-6=0 (x-6)(x+1)=0 * =6. - 1 The extraneous root(s) introduced by Kim is/are A. B. 6 C. - 1 and 6 D. no extraneous root was introduced Hint: Recall that extraneous roots are found algebraically, but do not satisfy the equation when verified. 9, The time, / seconds, it takes a pendulum to complete one back and forth swing can be determined by the equation / = 0.32 / , where / is the length of the pendulum in inches. Determine the length of the pendulum if it takes 1.3 s to make a complete back and forth swing. A. 2.02 in B. 2.03 in C. 4.06 in 16.50 in Hint: Rearrange the formula to find the value of /. Page 5 - Q +