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Alex Ar [27]
3 years ago
8

Lisa is cooking muffins.the recipe call for 7 cups of sugar . She has already put 2 cups . how many more cups does she need

Mathematics
2 answers:
Rasek [7]3 years ago
8 0

Answer:

she needs 5 more cups

Step-by-step explanation:

7-2=5

stealth61 [152]3 years ago
3 0

She only needs 5 more cups.

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34,977 ×2,344 is even are odd number
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Answer:

The answer to 34,977* 2,344 is 81986088. Therefore, it is an even number.

Step-by-step explanation:

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What is the equivlalent expression of 4 plus 4 plus 4 plus 4 plus 4 plus 4 plus 4​
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Step-by-step explanation:

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A 41 gram sample of a substance that's used to detect explosives has a k-value of 0.1392. Find the substance's half life, in day
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The substance half-life is of 4.98 days.

Step-by-step explanation:

Equation for an amount of a decaying substance:

The equation for the amount of a substance that decay exponentially has the following format:

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In which k is the decay rate, as a decimal.

k-value of 0.1392.

This means that:

A(t) = A(0)e^{-0.1392t}

Find the substance's half life, in days.

This is t for which A(t) = 0.5A(0). So

A(t) = A(0)e^{-0.1392t}

0.5A(0) = A(0)e^{-0.1392t}

e^{-0.1392t} = 0.5

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-0.1392t = \ln{0.5}

t = -\frac{\ln{0.5}}{0.1392}

t = 4.98

The substance half-life is of 4.98 days.

5 0
3 years ago
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