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Fittoniya [83]
4 years ago
8

Select the postulate that is illustrated for the real numbers 6×12=12×6

Mathematics
1 answer:
CaHeK987 [17]4 years ago
8 0

The postulate which is illustrated for the real numbers 6*12 =12*6 is The commutative property of multiplication. This commutative property of multiplication states that whenever we multiply two numbers,we can multiply then in any other. So if we have two numbers a and b,then we can multiply them as a*b or we can multiply them as b*a. We get the same result.

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Which number is one-fourth of the way between 2.2 and 8.5?
icang [17]
8.5-2.2=6.3/2=3.15/2=1.575+2.2=3.775 which is your answer, 3.775
4 0
3 years ago
Element X decays radioactively with a half life of 13 minutes. If there are 110 grams of Element X, how long, to the nearest ten
Vaselesa [24]

Answer : The time taken by the element to decay to 2 grams is, 75.2 minutes

Step-by-step explanation:

Half-life = 13 min

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{13\text{ min}}

k=0.0533\text{ min}^{-1}

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 0.0533\text{ min}^{-1}

t = time passed by the sample  = ?

a = initial amount of the reactant  = 110 g

a - x = amount left after decay process =  2 g

Now put all the given values in above equation, we get

t=\frac{2.303}{0.0533}\log\frac{110}{2}

t=75.2\text{ min}

Therefore, the time taken by the element to decay to 2 grams is, 75.2 minutes

7 0
4 years ago
Help me please please
larisa [96]

Answer:

44/3

Step-by-step explanation:

I hope this helps!

5 0
3 years ago
Please help quickly −2/9−(−1/3÷3/5)
amid [387]

Answer:

0.33333333333

Step-by-step explanation:

3 0
4 years ago
In 1980, the United States' national debt exceeded $9 billion dollars. Express the exact dollar amount in scientific notation. U
DanielleElmas [232]
Well, 9 billion = 9,000,000,000 so in scientific form it would be 9 x 10^9 To get the exponent, just count the number of zeros, which for 9 billion we have 9
8 0
4 years ago
Read 2 more answers
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