In geometry, you can use deductive rules to.
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a. make conjectures
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b. prove conjectures
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c. define terms
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d. find patterns

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36