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Inessa05 [86]
4 years ago
8

Solve by elimination 4x+5y=15 6x-4y=11

Mathematics
1 answer:
lyudmila [28]4 years ago
8 0
X = 5/2 ,y = 1.I usually solve for x first then substitute the answer in one of the equations to find y.
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The number 66 is increased to 72. What is the percentage by which the number was increased, to the nearest tenth of a percent?
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Answer:

The increase is 9.1%

Step-by-step explanation:

<u>Step 1:  Make an equation </u>

66 * x = 72

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x = 1.09090

<u>Step 3:  Find the increased </u>

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Step-by-step explanation:

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