Can you show the full question?
(4 + 9 + 16 / 4) - 8 - (3 * 5)
(29 / 4) - 8 - (3 * 5) | Add up the numbers on left side.
(7.25) - 8 - (15) | Divide 29 by 4 and multiply 3 and 5.
-0.75 - (15) | Subtract 8 from 7.25
Final answer: -15.75
-10x-12y=32
+10x+50y=25
38y=57
Y=1.5
X=-5
Answer:
c - 8.9
Step-by-step explanation:
2.3^2+ 8.6^2
✓79.25
8.9
Answer:

From this info and using the empirical rule we know that we will have about 68% of the scores between:


95 % of the scores between:


And 99.7% of the values between


Step-by-step explanation:
For this problem we can define the random variable of interest as "the student grades" and we know that the distribution for X is given by:

From this info and using the empirical rule we know that we will have about 68% of the scores between:


95 % of the scores between:


And 99.7% of the values between

