B^2c^-1
-4^2(2)^-1
-4^4^-1
-4^1/4
1 + i
Answer:
hope it helps
Step-by-step explanation:
Finding square roots of numbers that aren't perfect squares without a calculator
1. Estimate - first, get as close as you can by finding two perfect square roots your number is between.
2. Divide - divide your number by one of those square roots.
3. Average - take the average of the result of step 2 and the root.
4. Use the result of step 3 to repeat steps 2 and 3 until you have a number that is accurate enough for you.
Let x = the unknown number to get x = 6
Z - 7/9 = 5/9
z = 5/9 + 7/9
z = 4/3
Answer: z = 4/3.
I believe it's the second answer, where "the test contains 10 3-point questions and 14 5-point questions."