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
Nana76 [90]
3 years ago
7

In 2005, a Nevada silver mine exported 200 tons of silver. In 2008, as the silver supply became exhausted, it only exported 25 t

ons of silver. What is the rate of change of the mine’s silver output?
Mathematics
1 answer:
yulyashka [42]3 years ago
7 0
To obtain the rate of change of mine's silver output, subtract the number of silver exported on 2005 from that on 2008. From the given, from 2005 to 2008, which is a span of 3 years, the exported silver decreased by 175 tons. Thus, the rate of change is equal to -175 tons per 3 years. 
You might be interested in
Can I have some help
Brums [2.3K]

\frac{100}{40}  =  \frac{z + 69}{z}  \\ 100z = 40z  + 2760 \\ 60z = 2760 \\ z = 46
6 0
3 years ago
In how many ways can 7 persons be arranged in a line such that (a) two particular persons are never together.
ivanzaharov [21]

Answer:

3600 ways

Step-by-step explanation:

person A has 7 places to choose from :

→ He has 2 places ,one to the extreme left of the line ,the other to the extreme right of the line

If he chose one of those two ,person B will have 5 choices and the other 5 persons will have 5! Choices.

⇒ number of arrangements = 2×5×5! = 1 200

→ But Person A also , can choose one of the 5 places in between the two extremes .

If he chose one of those 5 ,person B will have 4 choices and the other 5 persons wil have 5! Choices.

⇒ number of arrangements = 5×4×5! = 2 400

In Total they can be arranged in :

1200 + 2400 = 3600 ways

3 0
1 year ago
Which of the following expressions represents "the quotient of nine times a number and seven"?​
irga5000 [103]

Answer:

I think it's 9x/7

Step-by-step explanation:

Hope my answer has helped you.

3 0
3 years ago
I know the answer just need the step-by step work
Anna71 [15]

Answer:

  x^2 +18x +80

= x^2 + 10x + 8x +80

= x(x+10) + 8(x+10)

= (x+10)(x+8)

Hope this help!

Good luck!

6 0
2 years ago
A rectangular park is 56 mi wide and 157 mi long. What is the area of the park as a mixed number simplest form? Enter your answe
zimovet [89]
A(area) = b(base) * h(height)

A = 56 * 157

A = 8,792 mi^2
4 0
2 years ago
Read 2 more answers
Other questions:
  • How to turn 40% into a fraction
    15·2 answers
  • The distance s that an object falls is directly proportional to the square of the time t of the fall. If an object falls 16 feet
    8·1 answer
  • The sum of the digits of a three-digit number is 16 .the tens digit is two more than the units digit and the unit digit is tripl
    6·1 answer
  • Explain when you would not need to regroup any hundreds into thousands when multiplying a 4 digit number by a 1 digit number.
    8·1 answer
  • Determine whether triangle TJD is congruent to triangle SEK given T (-4,-2), J (0,5), D (1,-1), S (-1,3), E (3,10), K (4,4) and
    10·1 answer
  • What slope of the line contain (-2,5) and (6,-2)
    15·1 answer
  • Directions: write an exponential function for each situation then give the value of the function for the specified period of tim
    13·1 answer
  • Is the following statement true or false?
    9·1 answer
  • I am giving a lot of points lease give explanation
    11·1 answer
  • The sum of a number increased by three and the number decreased by seven
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!