A dozen eggs is 12 eggs. each one weighs 3.5 grams, so 12 x 3.5 = 42 grams
To calculate the standard deviation of those numbers:<span>
1
Work out the Mean (the simple average of the numbers)
2
Then for each number: subtract the Mean and square the result.
Then work out the mean of those squared differences.<span>Take the square root of that and we are done!</span></span>
Answer:
B: When one quantity is a constant multiple of the other
The answer is B.
1. Use the quadratic formula
2. Solve everything under the square root
3. Solve the denominator
You can check the picture to see the work
Parallel lines have the same gradient.
The equations are either in the form y = mx+b (m is the gradient)
or in general form ax + by + c = 0 (-a/b)
The gradient of y = 2x - 4 is 2.
The answer is B (gradient = -4/-2 = 2)