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
Crazy boy [7]
3 years ago
7

The amount of radioactive element remaining, r, in a 100mg sample after d days is represented using the equation r=100(1/2) d/5.

What is the daily percent of decrease
Mathematics
1 answer:
Ludmilka [50]3 years ago
4 0

Answer:

   12.94%

Step-by-step explanation:

r = 100(1/2)^(d/5) = 100((1/2)^(1/5))^d ≈ 100(.87055)^d

The daily decrease is 1 - 0.87055 = 0.12944 ≈ 12.94%

You might be interested in
−2y−8+4yminus, 2, y, minus, 8, plus, 4, y
lora16 [44]

Answer:

a number 12

Step-by-step explanation:

duh bro

3 0
3 years ago
Read 2 more answers
Tonya and Pearl each completed a separate proof to show that alternate interior angles AKL and FLK are congruent. Who completed
zalisa [80]

Answer:

Tonya proof is correct
and Pearl proof is wrong

Step-by-step explanation:

AKL and GKB are obviously congruent. But the reasons given are different, One of the justification is Vertical Angles Theorem, and the other is Adjacent Angles.

But the correct justification is the Vertical Angles Theorem, because the angles are Vertically away from each other, or the angles are at opposite sides of each other. Which is when Vertical Angles Theorem is applied.
Making Tonya correct since that was the answer he given.

The definition of Adjacent Angles is incorrect, this Theorem is used when the angles are Adjacent to each other. When the angles are on the same line as the other angle, is when the definition of Adjacent Angles is applied. Not in this situation

8 0
1 year ago
rove the following statement directly from the definition of rational number. The difference of any two rational numbers is a ra
Umnica [9.8K]

Answer:

Step-by-step explanation:

Question:

Prove the following statement directly from the definitions.

The difference of any two rational numbers is a rational number.

Answer, see attachment for proof.

7 0
3 years ago
Approximately how many degrees are in the measure of an interior angle of a regular seven sided polygon
kramer
The interior angle of a regular polygon is equal to each other since all sides of the polygon are congruent. The formula that expresses the relation of the sides of the polygon and the measurement of the interior angle is (n2)*180/n where n is 7. Each interior angle then measures 128.6 degrees.
3 0
3 years ago
A student always spends Thanksgiving with their family, who lives 99 miles away from their home in Houston. If it took them 9 ho
Harman [31]
The average speed for the trip is 11 miles per hour, or mph. 99 miles divided by 9 is 11
6 0
3 years ago
Other questions:
  • What’s the answer to number 2 ? Show how you solved please !!!
    12·1 answer
  • SUMA Y RESTA DE FRACCIONES
    5·1 answer
  • Solve for x need help asap
    8·1 answer
  • Make a conjecture about the next term in the sequence 3, -5, 7, -9, 11​
    14·2 answers
  • How many solutions do the TWO equations have?
    14·1 answer
  • -66.14 + 73.53 - 87.15
    11·1 answer
  • Write the decimal values of the digits given in bold : 0.437
    14·1 answer
  • Can someone help? If b/a=c/b=d/c=2/3, find a:b:c:d.
    12·1 answer
  • Pls help............................
    15·2 answers
  • Can anyone help me identify the center and radius on these 3 pls , brainly
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!