Explain two ways you could solve 20 = 5(−3 + x

Mathematics

2 answers:

emmasim [6.3K]2 years ago

7 0

Answer:

7 is x

Step-by-step explanation:

1) Divide both sides by 5 to give

4=-3+x

x=4+3

x=7

2) Multiply 5 with the RHS (Right Hand Side) to give

20=-15+5x

20+15=5x

35=5x

x=7

ruslelena [56]2 years ago

3 0

I hoped this helped! Sorry about my messy handwriting!!!

Step-by-step explanation:

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Elena receives $131 per year in simple interest from three investments totaling $3000. Part is invested at 3%, part at 4% an

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Answer:

Elena invested $ 1,700 at 5%, $ 700 at 4%, and $ 600 at 3%.

Step-by-step explanation:

Given that Elena receives $ 131 per year in simple interest from three investments totaling $ 3000, and part is invested at 3%, part at 4% and part at 5%, and there is $ 1000 more invested at 5% than at 4%, to find the amount invested at each rate, the following calculations must be performed:

1500 x 0.05 + 500 x 0.04 + 1000 x 0.03 = 75 + 20 + 30 = 125

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Answer:

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Step-by-step explanation:

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