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
victus00 [196]
3 years ago
6

Element X is a radioactive isotope such that every 91 years, its mass decreases by half. Given that the initial mass of a sample

of Element X is 80 grams, how long would it be until the mass of the sample reached 68 grams, to the nearest tenth of a year?
Mathematics
1 answer:
vaieri [72.5K]3 years ago
7 0

Answer:

21.3

Step-by-step explanation:

Delta math answer.

You might be interested in
When a customer places an order at Ying Ying's bakery, there is an 8%, percent probability that the customer will report a food
iragen [17]

Answer:

.63

Step-by-step explanation:

3 0
3 years ago
Derivative of sin11xcos11x
diamong [38]
Hello here is a solution :
f'(x) =( sin11x)'cos11x +<span>sin11x(cos11x)'
(sin(ax+b))'=a cos(ax+b)
</span>(cos(ax+b))'=-a sin(ax+b)
f'(x) = 11 cos11xcos11x-11sin11xsin11x
f'(x) = 11(cos11x)²-11(sin11x)²


6 0
3 years ago
Find all the factors of 125
Andreyy89

Answer:

1,5,25,125,

all can be added or multiplied to equal 125

3 0
3 years ago
In a small company with 20 employees, 10 employees make $80,000/yr, 6 employees make $ 150,000/yr the 4 highest-paid employees a
Elis [28]

Answer:

$129 000/yr

Step-by-step explanation:

Weighted average is used to answer this question.

<em>total employees are 20</em>

10 employees make 80 000

<em>total earning for 10 employees </em>= 80 000 * 10 = 800 000 (multiplying)

6 employees make 150 000

<em>total earning for 6 employees= </em>150 000 * 6 =900 000<em> (multiplying)</em>

4 employees make 220 000

<em>total earning for 4 employees </em>= 220 000 * 4 = 880 00<em>0 (multiplying)</em>

<em />

<em>To calculate weighted average all the totals are added and then divide by total number of employees.</em>

<em>weighted average =</em> (800 000 + 900 000 + 880 000)/20

<em />

<em>weighted average = </em>2580000/20

<em />

<em>Weighted average = </em>129 000

<em />

8 0
3 years ago
Mike wants to make meatloaf. His recipe uses a total of 7 pounds of meat. If he uses a 3 to 1 ratio of beef to pork, how much po
SSSSS [86.1K]
Total meat in the recipe  he wants to use  = 7 pounds

Beef : pork    =    3  : 1

Total pork that he will use =      \frac{1}{3+1} x 7 pounds

= 7/4 pounds

hope this helps
6 0
3 years ago
Other questions:
  • Simplify 2/3[12v-15]
    14·1 answer
  • The third angle in an isosceles triangle is 8% more than twice as large as each of two base angles. Find the measure of each ang
    13·1 answer
  • 21. Paula casts a shadow 2 meters long at the same time a tree casts a shadow 28 meters long. The tree is 17.smeters tall. How t
    7·1 answer
  • Two thousand seven thousands forty eight in standard form
    8·2 answers
  • From smallest to biggest in order these fractions 3/4 ,5/6 ,16/25 ,9/15
    15·2 answers
  • How many 3-digit numbers can be formed from the digits 1 through 4 if each digit is only used once?
    13·1 answer
  • ♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
    9·1 answer
  • GIVE BRAINLIEST!!! PLS LOVE U
    13·2 answers
  • 4 + 4 = ?<br> Hint: it's not 8 so get creative
    13·1 answer
  • Given the function h(x) = 3(5)x, Section A is from x = 0 to x = 1 and Section B is from x = 2 to x = 3. Part A: Find the average
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!