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ElenaW [278]
3 years ago
8

What is the solution of the following system?

Mathematics
1 answer:
timama [110]3 years ago
7 0

\text{Howdy!}\\\\\text{Make the x variables the same:}\\\\2(3x+2y=7)\\\\3(-2x+3/4y=-13)\\\\\\6x+4y=12\\\\-6x+2.25y=-39\\\\6.25y=-25\\\\y=-4\\\\\text{Now, plug -4 into one of the equations "y" variable}\\\\3x+2(-4)=7\\\\3x-8=7\\\\3x=15\\\\x=5\\\\\boxed{\text{Answer: (5, -4)}}

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The local appliance store is offering 20% off an entire purchase of $3000 or more or 40% off a single item of $1500 or more. Use
kobusy [5.1K]

Answer:

<u>After comparing these two discounts with their minimal amounts (3,000 and 1,500) a customer will save exactly the same amount: US$ 600. </u>

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Discount given by the local appliance store for entire purchases ≥ US$ 3,000 = 20% off

Discount given by the local appliance store for single items ≥ US$ 1,500 = 40% off

2. Let's calculate which offer will save most money on these appliances

A. Discount for entire purchases≥ US$ 3,000

Discount = Purchase * 20% off

Discount = 3,000 * 20% = 3,000 * 0.2 = 600

If a customer purchases US$ 3,000 on an entire purchase of several items, he or she will save US$ 600

B. Discount for single items ≥ US$ 1,500

Discount = Purchase * 40% off

Discount = 1,500 * 40% = 1,500 * 0.4 = 600

If a customer purchases a single item of US$ 1,500, he or she will save US$ 600

<u>C. Conclusion: After comparing these two discounts with their minimal amounts (3,000 and 1,500) a customer will save exactly the same amount: US$ 600. </u>

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What is Photosynthesis​
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Step-by-step explanation:

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Answer:

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