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3 years ago

What is the expression after applying the distributive property?

Mathematics

2 answers:

Mazyrski [523]3 years ago

8 0

Answer:

The distributive property states that the product of an expression and a sum is equal to the sum of the products of the expression and each term in the sum. For example, a(b + c) = ab + ac. Equivalent. Equivalent means equal in value or meaning.

natulia [17]3 years ago

5 0

.8+3.6 this is because when you distribute it -0.4 being multiplied by -2 and -9. It is positive because the negatives cancel each other out

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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

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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 :

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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,

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

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

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