1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kupik [55]
1 year ago
14

The model for radioactive decay Is y = yoek. A radioactive substance has a half-life of 1110 years. If 50 grams are present toda

y, in how many years will 31 gramsbe present? While solving this problem, round the value of k to seven decimal places. Round your answer to two decimal places.

Mathematics
1 answer:
8_murik_8 [283]1 year ago
5 0

Given the equation:

y=y_0e^{-kt}

You know that the radioactive substance has this half-life (in years)

t=1110

And:

y=\frac{y_0}{2}

Therefore, you can rewrite the equation in this form in order to find "k":

\frac{1}{2}=e^{-k(1110)}

Solve for "k":

undefined

You might be interested in
Need a little help help here..
Blizzard [7]
Wat do u need I can help u with anything u need
5 0
4 years ago
Read 2 more answers
How to isolate scalars from a matrix
I am Lyosha [343]
The technique of matrix isolation involves condensing the substance to be studied with a large excess of inert gas (usually argon or nitrogen) at low temperature to form a rigid solid (the matrix). The early development of matrix isolation spectroscopy was directed primarily to the study of unstable molecules and free radicals. The ability to stabilise reactive species by trapping them in a rigid cage, thus inhibiting intermolecular interaction, is an important feature of matrix isolation. The low temperatures (typically 4-20K) also prevent the occurrence of any process with an activation energy of more than a few kJ mol-1. Apart from the stabilisation of reactive species, matrix isolation affords a number of advantages over more conventional spectroscopic techniques. The isolation of monomelic solute molecules in an inert environment reduces intermolecular interactions, resulting in a sharpening of the solute absorption compared with other condensed phases. The effect is, of course, particularly dramatic for substances that engage in hydrogen bonding. Although the technique was developed to inhibit intermolecular interactions, it has also proved of great value in studying these interactions in molecular complexes formed in matrices at higher concentrations than those required for true isolation.
3 0
3 years ago
What factor is paired with 4 to give 24
ASHA 777 [7]

Answer:

6

Step-by-step explanation:

4 x 6 = 24

8 0
3 years ago
(12x)<br> D<br> A<br> E<br> (17x - 14)°<br> В<br> (2x + 5)°<br> с
kiruha [24]

The value of x for the given equation (2x+5)=(17x-14) will be 19/15.

<h3>What is the equation?</h3>

An equation is a statement that two expressions, which include variables and/or numbers, are equal. In essence, equations are questions, and efforts to systematically find solutions to these questions have been the driving forces behind the creation of mathematics.

It is given that,

(2x+5)=(17x-14)

We have to rearrange the equation by applying the arithmetic operation for the like term, the terms which are similar, and we can perform arithmetic operations on it like addition and subtraction.

17x-2x=5+14

15x=19

x=19/15

Thus, the value of x for the given equation (2x+5)=(17x-14) will be 19/15.

The question is incomplete, the complete question is"solve the value of x for the given equation,

(2x+5)=(17x-14)

Learn more about the equation here,

brainly.com/question/10413253

#SPJ1

7 0
1 year ago
A group of friends has $18 to spend on ice cream. A small cone costs $2 and a large cone costs $3.
schepotkina [342]

Answer:

C)

Step-by-step explanation:

2x+3y=18

3y=-2x+18

y=-2/3x+18/3

y=-2/3x+6

5 0
3 years ago
Other questions:
  • Find the radius of a circle with an area of 28.26 square yards
    6·1 answer
  • Someone i need help i cant expand these expressions
    10·1 answer
  • ashley is the utilities manager at a paper mill. she's watching over one of her holding tanks. it takes 4/5 of an hour to fill 1
    8·2 answers
  • Staci has seven more cats then taylor.Write and expression that illustrates how many cats staci has. Use x to represent the numb
    5·1 answer
  • What is 2/7 divided by 5/9
    14·2 answers
  • Alaina wants to decide whether her current cell phone plan is better than a package that another company offers. To compare the
    8·1 answer
  • PLS HELP MEEEEEEEEEEEEEE!!!!!!!!!!!!!!!!!!!!!! ITS TIMED!!!!!!!!!!!!!!!
    6·1 answer
  • Solve for v, v-5/7=2 2/3
    12·1 answer
  • Write the quadratic equation in factored form: x^2 + x - 20
    9·1 answer
  • Find AC for the quadrilateral
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!