Answer:
Add 3y to both sides of the equation.
x=−2+3y
x+3y=16
Replace all occurrences of x with −2+3y in each equation.
−2+6y=16
x=−2+3y
Solve for y in the first equation.
y=3
x=−2+3y
Replace all occurrences of y with 3 in each equation.
x=7, y=3
The solution to the system is the complete set of ordered pairs that are valid solutions. ( 7 , 3 )
The result can be shown in multiple forms. Point Form: ( 7, 3 )
Equation Form: x=7, y=3
Step-by-step explanation:
Answer: False.
The sample mean does not determine how wide the confidence interval would be. The sample mean determines the center of the confidence interval. The confidence level, standard deviation, and the sample size would determine the confidence interval width.
Answer: the answer is on a calculator
Step-by-step explanation:
If your aboe to do that you can so anything
Answer:
-15, -17
Step-by-step explanation:
x^2 + 32x = –255 move the -255 to the left
x^2 + 32x +255=0
What two number when multiplied equal 255? Those same two numbers when added make 32. 17*15 make 255 and added is 32
(x+15)(x+17) For x+15=0 move the 15 to the other side. x= -15. Same with x+17=0 is x= -17
x= -15, -17
Answer: they are neither
Step-by-step explanation: since none of the points remain side by side but don’t cross at a 90° angle they can be neither parallel or perpendicular
