answer choice a
x^2 - 5x - 1 = 0
a=1, b=-5, and c=-1
next you plug in the numbers into the quadratic formula
-(-5) plus or minus the square root of (-5)^2 - 4(1)(-1)/ 2(1)
after you simply, you should get 5 plus or minus the square root of 29, which is answer choice a
Solution: Which statement about the scatter plot is true?
The correct answer is option A. As the number of weeks in class increases, the number of keyboarding mistakes decreases.
Explanation: From the scatter plot, we clearly see there exists a negative linear relationship between the number of weeks in class and the number of mistakes. And we know that if there exists a negative linear relationship between the two variables, then the values of two variables move in opposite direction. If the values of one variable goes up, the values of other variable go down. From the given scatter plot, we clearly see the number of mistakes goes down as the number of weeks in class increases. Therefore, the option A is correct
Answer: x=−3 or x=13
Step-by-step explanation:
Step 1: Subtract 39 from both sides.
x2−10x−39=39−39
x2−10x−39=0
Step 2: Factor left side of equation.
(x+3)(x−13)=0
Step 3: Set factors equal to 0.
x+3=0 or x−13=0
x=−3 or x=13
He should get it at Mikes bikes because 25% of $300 is 225. If he buys it at cycle center he will pay $275 for his bike and get $40 off of his next bike after he purchases his first bike. Mikes bikes is cheaper. Plus he wouldn't need another bike for another couple years.
Answer:
Determine the response factor ( F ) = 0.146
Step-by-step explanation:
Recalling from Response factor;
- where Ax = peak area of analyzed (DDT) = 3713
- As = peak area of standard = 10899
- Cx = concentration of analyzed = 6.58 mg/L
- Cs = concentration of standard chloroform = 2.82 mg/L
- From the equation; F = Ax/As x Cs/Cx
