First you gotta distribute.
4 (1.75y - 3.5) + 1.25y
4 * 1.75 y = 7
4* (-3.5) = (-14)
7y - 14 + 1.25y
Combine like terms
8.25y - 14
I can help you. What is your question? Can you tell me?
Answer:

Step-by-step explanation:
Given
Bisector: QS


Required
Determine PQR
Since PQR is bisected to PQS and RQS, we have that

Substitute expressions for PQS and RQS

Collect Like Terms


Divide both sides by 3

Solving for PQR;



Substitute 2 for x



89 would be the correct answer
Answer:
option C.
Step-by-step explanation:
The given graph is the bell shaped graph.
From the graph we can observe that the peak is at 69.
So, the mean of the data is = 69 .
Standard deviation is the deviation of the graph from the mean value.
= 72-69 = 3
Hence, the standard deviation is equal to 3.
So, the correct answer is option C.