Identify the property that justifies the statement: If 4x - 3 = 7, then 4x = 10. -----> Is this substitution property?
2 answers:
Answer:
No, it is not substitution property. Addition property of equality justifies the statement.
Step-by-step explanation:
The given statement: If
.... (1)
them
... (2)
According to the Addition property of equality, if a,b and c are real number, then
Using Addition property of equality, add 3 on both sides in equation (1).
This equation is same as equation (2).
Therefore Addition property of equality justifies the statement.
You might be interested in
Answer:
Please check the explanation.
Step-by-step explanation:
The slope-intercept form of the line equation
where
- m is the rate of change or slope
- b is the y-intercept
A hot air balloon is descending at a rate of 287 feet per minute.
Thus, the rate of change m = -287
The negative sign indicates that a hot air balloon is descending.
Let y be elevation.
Let x be the time (in minutes)
As there is no mentioning of the initial height.
Thus, the y-intercept b = 0
now substituting m = -287 and b = 0
y = mx + b
y = -287x + 0
y = -287x
In order to determine the total change in elevation of the balloon in 4 minutes, we need to substitute x = 4 in the equation y = -287x.
Thus, the total change in elevation of the balloon in 4 minutes will be:
y = -287x
y = -287(4)
y = -1148 feet
The negative sign indicates that that the elevation is decreasing.