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
HACTEHA [7]
3 years ago
11

The function c ( x ) = 63 ⋅ ( 1.03 ) x models the cost in dollars, c , of 1 ounce of a certain chemical used in a laboratory. x

represents the number of years since 1990.
How much does an ounce of the chemical cost in 2005? (Do NOT type the $ with your answer.)
Mathematics
1 answer:
Fudgin [204]3 years ago
4 0

9514 1404 393

Answer:

  $98.15

Step-by-step explanation:

2005 is 15 years after 1990. Using the formula we find ...

  c(15) = 63·1.03^15 ≈ 63·1.55797

  c(15) ≈ 98.152

An ounce of the chemical costs about $98.15 in 2005.

You might be interested in
Solve the literal equation for x. <br><br> w=5+3(x−1)
ICE Princess25 [194]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

x = w/3 - 2/3

4 0
3 years ago
At an art exhibition there are 12 paintings of which 10 are original. A visitor selects a painting at random and before decides
Reika [66]

Answer:

a) 0.8333

b) 0.75

c) 0.8181 or 0.9090

Step-by-step explanation:

a)

The probability the visitor selects an authentic painting is  

10/12 = 0.8333

b)

Since the opinion of the expert does not depend on your choice, the events are <em>independent</em>, so the probability that the expert says is authentic and it really is, is

0.8333*0.9 = 0.75

c)

If the expert decides the painting is a copy and it is not, then there are 11 paintings of which 9 are authentic, so the probability the visitor selects a new original painting is

9/11= 0.8181

If the expert decides the painting is a copy and it is, then there are 11 paintings of which 10 are authentic, so the probability the visitor selects a new original painting is

10/11= 0.9090

8 0
3 years ago
Of the 120 rooms in a hotel, 55% are single bed rooms, 30% are double bed rooms and the rest are deluxe rooms. How many deluxe r
Nat2105 [25]
Hey there !

Check the attachment.
Hope it helps you :)

6 0
3 years ago
What is 10 + 10?
xenn [34]

Answer:

20

Step-by-step explanation:

10+10=20

4 0
3 years ago
Read 2 more answers
in a certain chemical, the ratio if zinc to copper is 3 to 16. a jar of the chemical contains 320 grams of copper. how many gram
Dennis_Churaev [7]

Answer:

60 grams

Step-by-step explanation:

For these type of questions, we can equate the ratio with the actual amounts. We will let the quantity to find be an unknown variable, such as x. Then we equate the ratios, cross multiply, and use algebra to solve.

Let grams of zinc be "x", so we can write the ratios and actual amounts as:

\frac{3}{16}=\frac{x}{320}

Then we cross multiply and solve for x, what we want to find out. Shown below:

\frac{3}{16}=\frac{x}{320}\\16x =3 * 320\\16x = 960\\x = \frac{960}{16}\\x=60

There are 60 grams of zinc.

5 0
4 years ago
Other questions:
  • NEED HELP
    7·2 answers
  • In 1990, it cost $800,000 for a 30-second commercial during the Super Bowl. In 2020, the cost for a 30-second commercial was $5,
    8·2 answers
  • What is 920 times 98??
    14·2 answers
  • What is the y-intercept of the graph of the function f(x) = x2 + 3x + 5?
    7·2 answers
  • a and b together can do a work in 10 days B and C together can do the same work in 15 days a b and c together can do the same wo
    9·1 answer
  • What is 9.85km to 5000m as a ratio in it's lowest terms
    12·1 answer
  • Please answer i will give you brainiest please answer asap!!!!!!!!!!
    5·2 answers
  • Urgenttttt please I need it fast​
    10·1 answer
  • Can u help me with these math problems
    15·1 answer
  • The table shows the average chick weight in grams of sixteen different species of birds.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!