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nevsk [136]
3 years ago
11

How to make 4 1/5 as a decimal?

Mathematics
1 answer:
ladessa [460]3 years ago
5 0

Answer:

4.2

Step-by-step explanation:

Because 1/5 has to be converted into the 100 as the denominator and the number you are supposed to have for the numerator so it can be easier and 4 is the whole number so it doesnt need to be in the equation.

1/5

X

20= 20/100  so now all you have to do is make that a decimal since it hasnt got to 100 or past it and you have your answer

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3 years ago
A sequence is defined recursively using the formula f(n + 1) = -0.5f(n). If the first term of the sequence is 120, what is f(5)?
PolarNik [594]

Answer: 7.5

Step-by-step explanation:

The given formula tells us that the next term f(n+1) of the sequence is -0.5 times the previous term f(n)

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Second term of the sequence is f(2) = f(1+1) = -0.5 f(1) = -0.5 (120) = -60

Third term of the sequence is f(3) = f(2+1) = -0.5 f(2) = -0.5 (-60) = 30

Fourth term of the sequence is f(4) = f(3+1) = -0.5 f(3) = -0.5 (30) = -15

Fifth term of the sequence is f(5) = f(4+1) = -0.5 f(4) = -0.5 (-15) = <em>7.5</em>

3 0
3 years ago
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What does 4 5/8 - 1 2/5 equal?
mihalych1998 [28]

4 \frac{5}{8}  - 1 \frac{2}{5}  \\  \\  \frac{37}{8}   -  \frac{7}{5}  \\  \\  \frac{185}{40}  -   \frac{56}{40}   =  \frac{185 - 56}{40}  \\  \\  =  \frac{129}{40}  = 3.225 = 3 \frac{9}{40}

I hope I helped you^_^

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