To find z, you have to divide -3 and 10, which you would get an odd number. That will be your answer for z :)
Answer:
red question= 8.5 yellow question=4.25
Step-by-step explanation:
Answer:
Step-by-step explanation:
- The speed of the boat in the lake = x
- The speed of the current = 3 km/h
<u>Required equation:</u>
- 54 / (x + 3) + 42 / (x - 3) = 96/x
- 9x(x - 3) + 7x(x + 3) = 16(x + 3)(x - 3)
- 9x² - 27x + 7x² + 21x = 16x² - 144
- 6x = 144
- x = 144/6
- x = 24 km/h
Answer:

Step-by-step explanation:
9x² + 6x – 17 = 0
Apply the quadratic formula

a = 9; b = 6; y = -17







The graph below shows the roots at x₁ =1.081 and x₂ = -1.748.