I think it is -8. Subsitute the value. 2(-8) +1=-15 which is less than 0. When you plug -8 for x^2 -1 you get 64-1 which is 63. 63 is offcourse greater than 0.
The probability of drawing a white marble the first time is 3/10. Then, since she didn't replace the first white marble, the probability of drawing another white marble is 2/9. We multiply these fractions together and get 1/10 or .1 or 10%
Answer:
x = - 6.8
Step-by-step explanation:
Solve for 3/4(x) − 1.72 = −6.82
3/4 (x) = -6.82 + 1.72
3/4 (x) = -5.10
x = 4 * -5.1 / 3
x = 4 * - 1.7
x = - 6.8
Answer:
speed = distance / time
Jana's speed is
speed = (3.5 mi)/(1/3 h) = 3*3.5 mi/h = 10.5 mi/h
