I'll get you started. Let x and y be the two numbers. we have: x + y = 74 (sum is 74) x = 4y - 6 (the number x is six less than 4 times y) Now that you have the equations use an algebraic techniques to eliminate one variable thereby solving for the other. If you need more help add a comment to your question.
Answer
0.00145
Step-by-step explanation:
(5 x 10^-4) + (9.5 x 10^-4)
0.0005 + 0.00095
= 0.00145
Answer:
4x + 4y - 8
Step-by-step explanation:
Step 1: Distributive Property
Distributive property says you would multiple all the terms inside the bracket by the coefficent infront of the bracket
Step 2: Solve

Step 3: Therefore Statement
Therefore 4(x - 2 + y) simplifies into 4x + 4y - 8
Answer: 0.9660
Step-by-step explanation:
Given: Mean : 
Variance : 
⇒ Standard deviation : 
The formula to calculate z is given by :-

For x= -3

The P Value =
For x= 3
The P Value =

Hence, the probability that a given error will be between -3 and 3=0.9660