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Brrunno [24]
3 years ago
6

Use the Commutative Property and compatible numbers to calculate the sum. Explain how you used mental math. 23. 3 + 36. 7

Mathematics
1 answer:
hoa [83]3 years ago
7 0
                                                       1  1
I think it might be 23.3 + 36.7 is 36.7
                                                      23.3 
                                                     --------
                                                      60 .0

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VLD [36.1K]

Answer: 5x-16

<u>Switch operations</u>

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A family wants to save for college tuition for their daughter. What continuous yearly interest rate r% is needed in their saving
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Answer:

The continuous yearly interest is  22.5% per year.

Step-by-step explanation:

Continuous yearly interest:

Continuous yearly interest is defined as the sum of the interest comes from principle and the interest comes from interest.

The formula for continuous interest yearly is

A=Pe^{rt}

where A = The final amount =$110,000

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\Rightarrow e^{14r}= \frac{110,000}{4,700}

Taking ln both sides

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\Rightarrow {14r}= ln(\frac{1100}{47})

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\Rightarrow r = 0.225  (approx)

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4 0
3 years ago
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Answer:

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