ashlyo
21.08.2019 •
Mathematics
How many solutions does the system 2y=10x-14 and 5x-y=7 have
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Ответ:
All real numbers
Step-by-step explanation:
Take 2y=10x-14 and divide both sides by 2. Once you do that, you get y=5x-7. Use substitution and plug that into 5x-y=7. You get 5x-(5x-7)=7 which eventually simplifies to 7=7 which shows that you can plug in an infinite number of solutions so the answer is all real numbers.
Ответ:
the answer is 1/4
Step-by-step explanation:
so technically this is not that of a easy math question and to show you how it is because the answer is already in the question its saying that the CDE triangle is 1/4 of the ABC triangle so 1/4 and a decimal is 1 divided by 4 = .25 and .25 as a percent is 25% since the total height of the ABC tri is 36 you do 25 percent of 36 and if you know yo time tables you would see that 4x9=36 so 1/4 or 25% of 26 is 9 so thats the height of Tri. CDE and that concludes that since there are 4 of 25 in 100 then the situation 1/4 would mean the ABC triangle has 4 parts and Tri CDE is only 1 out of the 4/whole part.