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Natali5045456 [20]
3 years ago
12

Courtney is twice as old as Andre and three years older than Natalie. Courtney is half Shari's age. The difference

Mathematics
1 answer:
lord [1]3 years ago
7 0

Answer: x represents Courtney’s age

Step-by-step explanation:

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Erin invests $7000 in stocks and bonds. The bonds earn 5% annual interest and the stocks earn 8% interest. If she earns $404 in
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Answer:

\large \boxed{\$5200}

Step-by-step explanation:

               Let b = the amount invested in bonds

Then 7000 -b  = the amount invested in stocks

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\begin{array}{rcll}0.05b +0.08(7000 - b) & = & 404 &\\0.05b + 560 - 0.08b&=&404&\text{Distributed the 0.08}\\-0.03b + 560 & = & 404 & \text{Simplified}\\-0.03b & = & -156 & \text{Subtracted 560 from each side}\\\\b & = & \dfrac{-156}{-0.03} & \text{Divided each side by -0.03}\\\\b & = &\mathbf{5200}\\\\\end{array}\\\text{Erin invests $\large \boxed{\mathbf{\$5200}}$ in bonds}

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How can you identify if a decimal is terminating or non-terminating without calculating it?
Svetllana [295]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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