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x means what ever the missing number is. if it was x over 7, you would have to solve for x.
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What do coefficient represent?
The relative proportions of each reactant and product.
Which of these proportions could not be used to find x?
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What are the release dates for Solving for X - 2009 Proportional Reasoning Hollywood Proportions 1-4?
Solving for X - 2009 Proportional Reasoning Hollywood Proportions 1-4 was released on: USA: 16 September 2009
How are proportions related to direct variations?
If two variable, X and Y are in direct variation, then the proportion of X/Y or Y/X has a constant value.
How do you find proportions set equal to 2.80 using cross multiplication?
x/y= 2.8
How do you figure out proportions?
you use cross proportions. Ex: X 3 __________ = _______ 15 5 1. write the cross products 2. Multiply 5x=45 3. Think: What number times 5 equals 45? your answer is 9 OTHER: X=9
How many minutes will it take a runner to finish a 9 km distance race if he can run 12 km hr?
Short answer: 45 minutes Explanation: We're going to use proportions to figure this out. We have a known proportion of 12 km per 60 minutes (one hour) which we'll represent as 12/60. We then have a similar proportion with 9 km of unknown time which we'll represent as 9/X. We know these two proportions are equal so we end up with the equation: 12/60 = 9/x Now we simplify: 12/60 = 9/X 12X = 9*60 12X = 540 X = 45 So now we know the proportion is 9 km per 45 minutes. We can also say that the runner can run 9km in 45 minutes.
What does a point represent on a graph?
A point can represent a piece of data or an (x,y) value.
What do the factors of 4p2 represent?
2 x 2 x p x p
Does y0 represent y as a function of x?
y0(x) could represent a function of x but usually y(0) represents the function y that is evaluated at x = 0 and so is no longer a function of x but a constant.
Do 5 x and x 5 represent the same expression?
yes
Can -x represent a positive number?
Yes, if x is a negative number.
