Answer:
D. 6
Step-by-step explanation:
The system can be solved by subtracting double the second equation from the first:
... (4x +3y) -2(2x +y) = (20) -2(7)
... y = 6 . . . . . . . . . for solution (x, y) = (a, b), this tells you b=6.
Putting this into the second equation gives ...
... 2x +6 = 7
... 2x = 1
... x = 1/2
The solution is (x, y) = (a, b) = (1/2, 6). b = 6.
Answer:
City A
Step-by-step explanation:
City A because -15 is less than 12.
I multiply second equation by 2 which becomes -4x+ 6y=8 and for y I multiply second equation by 3 which becomes -6x+9y=12
Answer:
The standard deviation of SAT Verbal scores is 74.07 which is closest to 75
Step-by-step explanation:
Given that:
Using quartile equations:
Adding (1) and (2)
Inserting in (1) or (2)