Answer:
The answer is 42.5%
Step-by-step explanation:
The answer is (making this long lol) B!
We need to solve for the values of x by applying the method of completing the square in the given expression x² - 10x -2 = 17. The solution is shown below:
x² - 10x -2 = 17
Transpose -2 to the right side such as:
x² - 10x = 17 + 2
Perform addition of 17 and 2
x² - 10x = 19
Add + 25 in both sides
x² - 10x + 25 = 19 + 25
x² - 10x + 25 = 44
(x-5)(x-5) = 44
Where (x-5) is a perfect square, then we have:
(x-5)² = 44
x1 = +√44 -5 = 1.6
x2 = - √44 -5 = -11.6
The answers are x1=1.6 and x2 = -11.6.
Y = k * x
<span>When x = 7 then y = - 58 </span>
<span>- 58 = k * 7 Divide both sides with 7 </span>
<span>- 58 / 7 = k </span>
<span>k = - 58 / 7 </span>
<span>y = k * x </span>
<span>when x = 6 </span>
<span>y = - 58 * 6 / 7 </span>
<span>x = - 348 / 7
which would be -49.7</span>
Answer:
-2,2
Step-by-step explanation:
