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2 years ago

Use the fact that the quantity of a radioactive substance after t years is given by

Mathematics

1 answer:

AURORKA [14]2 years ago

6 0

Answer:

50 kg

Step-by-step explanation:

Put the given numbers into the given formula and do the arithmetic.

q = q0(2^(-t/k))

q = (87 kg)(2^(-20/25)) = (87 kg)(0.574349)

q ≈ 50 kg

The amount remaining after 20 years is about 50 kg.

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Answer:

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2 years ago

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Determine the rate of change for thw graph: $____ per mile

Ira Lisetskai [31]

Answer:

$2 per mile

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
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Step-by-step explanation:

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2 years ago

Order the integers from least to greatest {-11,8,-13,-2,16}

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Least to Greatest going ⬇
-13
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-2
8
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3 0

3 years ago

Find each angle measure. ( Diagrams are not drawn to scale.)

irina1246 [14]

Answer:

1-141

2-39

3-141

Step-by-step explanation:

180-39=141

1 and 3 look the same size and 2 looks the same as c (39°) so you jsut fill in for the letters

I'm pretty sure this is right

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3 years ago

To boost holiday sales, a jewelry store in Bismarck, North Dakota, is advertising the following promotion: "If more than seven i

REY [17]

Answer:

about 0.037

Step-by-step explanation:

A suitable probability calculator can provide the probability that 7 inches will be exceeded. It is about 0.036815.

The probability the store will have to refund money is about 0.037.

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2 years ago