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You appear to be referring to the fact that if a/b = c/d then ad = bc.
You know this is true because of the axioms of equality (If you do the same thing to both sides of an equation, then equality is maintained).
a/b = c/d
multiply by d
ad/b = c
multiply by b
ad = bc
If you wish to prove a specific proportion is true, you can test it with the equation ad = bc
What else can I help you with?
How can you tell if a proportion is false?
Multiply the cross products, and see if they are equal. If they are equal, the proportion is true. If they are unequal, the proportion is false.
What is true about the cross products of a proportion?
They're equal
What value of x will make this proportion true?
To determine the value of x that makes the proportion true, you need to set up the equation based on the given proportion. For example, if the proportion is a/b = c/d, you can cross-multiply to get ad = bc. Then, solve for x by isolating it on one side of the equation. If you provide the specific proportion, I can help you find the value of x.
Which one of the following statements expresses a true proportion 14628 2332 42762 351220?
To determine which statement expresses a true proportion among the numbers 14628, 2332, 42762, and 351220, we need to compare the ratios of these numbers. A true proportion means that the cross products of the ratios are equal. Without additional context or specific pairs to compare, it's not possible to identify a true proportion directly from these numbers. Please provide more details or specific pairs for comparison.
What is difference between proportion and probability?
Proportion is the probability of a selected sample. probability is the true probability of all cases. If this is not what you are looking for then please specify.
How can you tell if a proportion is false?
Multiply the cross products, and see if they are equal. If they are equal, the proportion is true. If they are unequal, the proportion is false.
How can you tell if a proportion is true?
If you cross-multiply and you obtain an equality, then the proportion is true. Example: 2/3 = 20/30 ? cross-multiply; 2 x 30 = 3 x 20 ? 60 = 60 Since we have an equality, the proportion is true.
What does a 95 percent confidence interval tell you about the population proportion?
There is a 95% probability that the true population proportion lies within the confidence interval.
Is this a true proportion 25 75 equals 9 27?
Yes the proportion for them both is 1:3
What is true about the cross products of a proportion?
They're equal
Total variable cost does not increase in proportion to output is it true?
False, it is the fixed cost which is not increased or decreased with proportion to output.
Arrange the four numbers to form proportion that is true?
40,50,80,64
What is a true proportion?
A true proportion is when two ratios are equal to one another. To prove this, you need to find the cross products of the ratios and see if they are equal. An example of a true proportion are the ratios 1/2 and 5/10, if you take the cross product the result is 2 x 5 = 1 x 10, which are equal.
What is difference between proportion and probability?
Proportion is the probability of a selected sample. probability is the true probability of all cases. If this is not what you are looking for then please specify.
Inbreeding decreases the proportion of homozygotes in a population?
that is true!! the answer is very much true!! just ask mydog sparky!!
Minerals and compounds that are not present in the proper proportion can cause sickness or death?
true
The expected frequency is determined by multiplying the sample size by the hypothesized proportion?
True.
