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
alukav5142 [94]
3 years ago
8

A radioactive nuclide has a half-life of 10 days. At what rate does the substance decay each day?

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
6 0

Answer:

6.7% decrease each day

Step-by-step explanation:

Half life: 10 days

Fraction = 0.5^(t/10)

Where t is the no. of days

Per day: t = 1

0.5^(1/10)

0.9330329815 × 100 = 93.30329917

Decrease of: 100 - 93.30329917

= 6.696700846% each day

You might be interested in
How can the equation of a parabola be derived when given the focus and the directrix?
Annette [7]
The distance between any point (x0,y0) on the parabola and the focus (m,n) is the same as the distance between (x0,y0) and the directrix line ax+by+c. The distance between (x0,y0) and focus (a,b) is \sqrt((x-m)^2+(y-n)^2). The distance between (x0,y0) and ax+by+c is |ax0+by0+c|/\sqrt(m^2+n^2).  Equalize these two expressions.
4 0
4 years ago
Name the constant of variation for y equals 1/4x then find the slope of the (0,0) and (4,1)... please
const2013 [10]

Answer:

Constant of variation: 1/4

Slope of the line: 1/4

Step-by-step explanation:

The constant of variation means the relationship between variables does not change. When we want to identify the constant of variation for an equation, it is helpful to refer to one of the following formulas: xy = k (inverse variation) or y/x = k (direct variation), where k is the constant of variation.

The slope formula states that m = (y2 -- y1) / (x2 -- x1). The slope formula can be read as "slope equals the second y coordinate minus the first y-coordinate over the second x-coordinate minus the first x-coordinate".

4 0
3 years ago
A collection of coins contains a total of sixteen dimes and quarters. It is worth $2.20 in all. How many dimes are in the collec
grin007 [14]

9514 1404 393

Answer:

  12 dimes

Step-by-step explanation:

Let q represent the number of quarters. Then the number of dimes is 16-q and the total value is ...

  0.25q +0.10(16 -q) = 2.20

  0.15q +1.60 = 2.20 . . . . . . . simplify

  0.15q = 0.60 . . . . . . . . subtract 1.60

  q = 4 . . . . . . . . . . . divide by 0.15

  16-q = 12

There are 12 dimes in the collection.

5 0
3 years ago
7 more than d is equal to 19
galben [10]

7+d=19 is the answer

subtract 7 from each side d=19-7

d=12


4 0
3 years ago
Read 2 more answers
What is 6x-5y=22 <br> y= -8
tigry1 [53]
Just plug it in
So -5 times times -8 = positive 40 so
6x +40 =22
No it’s just an easy equation
22-40= -18
-18 divided by 6 = -3
So x = - 3
Your x,y coordinates are
(-3,-8)
5 0
3 years ago
Read 2 more answers
Other questions:
  • 11, 8, 10, 10, 10, 9, 4, 9, 7, 5, 11, 8, 9, 11, 10, 10, 10, 9, 10 in chronological order
    5·2 answers
  • Can someone help me to answer this question pls!!!!
    13·2 answers
  • Wuts anser to this prohblum 17-14 I jus lernd it
    10·1 answer
  • What is the order of 5x10^-8, 7x10^-9, 3x10^-9, 8x10^4 from least to greatest?
    12·2 answers
  • Expres 5m as a decimal of 12m, correct to three decimal places.
    15·2 answers
  • The sum of two integers is 8 their difference is 6 wat are the two integers
    7·1 answer
  • The difference between the square roots of a number is 30. what is the answer?
    11·1 answer
  • Write an equivalent expression in standa<br> form and collect like terms.<br> 2x - (x + 8) - 4
    8·1 answer
  • Let f(x) = 4x + 2 and g(x) = 2x2-4. Find the formula for the composition function gf.​
    7·1 answer
  • PLEASE SOMEONE HELP ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!