A veterinarian has found that 4 cat years equal 32 human years, and 8 cat years equal 48 human years. Are cat years proportional to human years? Explain your reasoning.
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No, because for them to be proportional they have to be equal, which they aren't say they were each cat year is 8 human years so the first is right but for the second one to be right it has to be 64. Hope this helps you out.
How do you solve 5x+7=3x-5
Answers
5x + 7 = 3x - 5 First, subtract 3x from both sides.
Second, keep the 7 and subtract the 5x - 3x to get 2x.
Third, subtract the 7 from both sides.
Fourth, simplify -5 - 7.
Fifth, take the 2 and divide it on both sides, leaving just x in its place.
Sixth, since 6 goes into 2 to get 12, simplify the fraction to 6.
Answer: x = -6
Subtract 3x from both sides then isolate the variable. Sooooo... 5x+7=3x-5 2x+7=-5 2x=-12 x=-6
How do you solve equations with rational coefficients?
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You've been doing that all this time and didn't even realize it !
Every plain old number that you ever see is a rational number. Every equation that has plain old numbers next to the variables is an equation with rational coefficients.
If a variable ever has (pi) or a square root or a trig function next to it, then that's an irrational coefficient. But I'll just bet you haven't ever seen any of these yet.
What is 4806 rounded to nearest 1000
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5000 because anything over 4500 will round up to 5000