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liubo4ka [24]
3 years ago
7

Element X is a radioactive isotope such that every 20 years, its mass

Mathematics
1 answer:
faust18 [17]3 years ago
3 0

Answer:

12.1

Step-by-step explanation:

y=a(1/2)^t/h

270=410(1/2)^t/20

Divide both sides by 410

0.6585365854 = (1/2)^t/20

Log Both sides

Log(0.6585365854) / Log(1/2)

.6026645024= t/20

20 x .6026645024 = t

12.05329005 to the nearest tenth is 12.1 = t

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The perimeter of the square kitchen floor measures 48 feet what is the area of the kitchen floor
Leni [432]

Answer:

the answer is 144 feet

Step-by-step explanation:

to find the how long each sides of the square is divide 48 by 4 (because that's how many sides there are on a square). by doing that you get 12

to find the area of the square you do A= lw which in this case it would look something like this:

A= 12(12) you use 12 twice because square sides are always equal

then you multiply which gives you A= 144

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Answer:

5.23

Step-by-step explanation:

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Which equation is a point slope form equation for line AB? y−6=−2(x+2) y−2=−2(x+2) y−2=−2(x+6) y−2=2(x+2) A graph with a line ru
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Answer:

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Step-by-step explanation:

4 0
3 years ago
Difference of Squares gives which complex factors for the expression x2 +3?
Andreas93 [3]

Step-by-step explanation:

Shortest way to solve this question is to find the factors of the given expression.

The given expression is (x² + 13).

Now we have to factorize it.

(x² + 13) = x² + (√13)²

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            = x² - (i√13)²

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3 years ago
Point R is located between points Q and S. Point R is located at (3, 2) and point S is located at (8, 15). If R is the midpoint,
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Answer:

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Step-by-step explanation:

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7 0
3 years ago
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