Answer: x=20
Step-by-step explanation:
63-x=2x+3
-x-2x+63=3
-x-2x=3-63
-3x=3-63
-3x=-60
-3x/3=-60/3
X=20
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This equation has one solution which is -1.5
3x+7=-3x-2
+2. +2
3x+9=-3x
-3x. -3x
9= -6x
/-6. /-6
X= -1.5
5,14 is the domain of this function.
Answer:
95% Confidence interval: (111.02,112.98)
Step-by-step explanation:
Average = 112 seconds
Standard Deviation = 9 seconds
n = 324
Confidence interval:
Putting the values, we get,
3x + 9 + 4x + x simplifies to 8x + 9
y = mx + b: m is slope, b is y-intercept
no solutions: 8x + 8
(no solution from same slope and different y-intercept)
one solution: 4x + 1
(different slope needed)
infinitely many: 8x + 9
(same y-intercept, same slope_