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Olegator [25]
3 years ago
7

Using the linear combination method what is the solution to the system of linear equations 7x - 2y = -20 and 9x + 4y = -6

Mathematics
1 answer:
Ghella [55]3 years ago
8 0

x should equal -2 and y should equal -3 to solve this i multiplied the first equation by 2 then got rid of the 4y and -4y then i added the 14x to the 9 equaling 23x and added the -40 to the -6 which became 23x=-46 i solved this getting -s for x, then i plugged that into the equations to get y which was -3

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16. A farmer had 385.60 lb of tomatoes. She sold half of them at $1.15 per pound. How much money did she receive?
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She received $221.72. If you divide 385.60 in half, because she sold half, you get 192.8. You then multiply that number by 1.15. There you have your answer.
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1 year ago
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Step-by-step explanation:

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Answer:

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babymother [125]

Answer:

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3. almanac | provides statistical information on a variety of subjects

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6. newspaper | source of current international, national, and local news

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Explanation:

1. Books are written texts which contain mostly all the detailed information, hence its the first place to look when researching for a speech

5. Periodicals are mainly journals, articles or magazines so we often use it as reference

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