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pantera1 [17]
3 years ago
6

A fair coin is flipped twice. Drag letters to complete the tree diagram to represent the sample space

Mathematics
1 answer:
ankoles [38]3 years ago
6 0

Answer:

Step-by-step explanation:

HH

HT

TH

TT

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Last year, Maria had $10,000 to invest. She invested some of it in an account that paid 6% simple interest per year, and she inv
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Answer:

$3,000 invested at 6%

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Step-by-step explanation:

Maria had total $10,000 to invest.

Let x be the amount that Maria invested initially at 6% interest rate.

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Then she invested the remaining amount at 10% interest rate.

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She received a total of $880 in interest.

0.06x + 0.10(10,000 - x) = 880

0.06x + 1000 - 0.10x = 880

-0.04x = 880 - 1000

-0.04x = -120

0.04x = 120

x = 120/0.04

x = $3,000

This is the amount that Maria invested initially at 6% interest rate.

The remaining amount is

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This is the remaining amount that she invested at 10% interest rate.

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