Answer:
it is 7
Step-by-step explanation:
9 is in the tenths place, since the rule is if a number is more than 5 you add one to it so 9 becomes a 10 and the 3 on its left becomes a 4. so the answer is 96.40 or 96.4
The formula to calculate the z-score of a certain value is:
z = (x - (mean))/(standard deviation)
In this example, the x-value is 450, the S.D. is 100, and the mean is 500.
So, substitute these values into the formula.
z = (450-(500))/100
z=-50/100
z=-0.5
Therefore, the z-score is -0.5.
Answer:
the first one i think
Step-by-step explanation:
Answer:
x=2
Step-by-step explanation:
So 9x+3=-7+7x+14
Subtract 3: 9x=4+7x
Subtract 7x: 2x=4
x=2