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
DochEvi [55]
3 years ago
13

2. Write an expression to represent f (20)

Mathematics
1 answer:
Furkat [3]3 years ago
7 0

Answer:

I just learned this topic and have the same question, so I'm not sure if this right. However, I see a fellow student struggling and have to at least put in what I know. My equation was f(n) = 64(1/2)^n-1, then the question was write an expression to represent f(20).

Step-by-step explanation:

So, my answer was f(20) = 64(1/2)^19

f(20) is the number you plug into n. And because the exponent is n-1, I knew to subtract 1 from 20 to get 19.

Then I just wrote the equation out like the original expect with the numbers pluged in: f(20) = 64(1/2)^19

I hope this helps!

You might be interested in
[6.01] Systems of equations with different slopes and different y-intercepts have more than one solution.
scoundrel [369]
Sometimes systems <span>of equations with different slopes and different y-intercepts have more than one solution. This is, for the most part true but should be answered sometimes.
</span>
4 0
3 years ago
How much pure water must be mixed with 10 liters of a 25% acid solution to reduce it to a 10% acid solution?
Alex73 [517]
The solution is 25% acid, which means 2.5 liters acid (10 x .25). 
<span>you need that 2.5 liters to be 10%, or 1/10th the total. </span>
<span>the total would have to be 25 liters (2.5 x 10) so when you add to 10 to get 25 you get </span><span>15 liters. Hope I helped!</span>
3 0
3 years ago
Read 2 more answers
A rectangular soccer field is 120 ft long by 64 ft wide. What dimensions would a scale drawing of the soccer field be if the fie
timofeeve [1]

Answer:

Hence dimension on drawing= 12 in by 6.4 in

Step-by-step explanation:

Actual dimension of the soccer field is 120 ft by 64 ft

Scale during drawing = 1in to 10 ft

Hence dimension on drawing = 120/10 by 64/10 = 12 in by 6.4 in

4 0
4 years ago
A rain storm came through Clifton park and it was accumulating 2/3 inches of rain/hour. How many inches of rain would fall in 6
nlexa [21]

4 inches of rain would fall in 6 hours

<h3><u>Solution:</u></h3>

Given that, A rain storm came through Clifton park  

And it was accumulating \frac{2}{3} inches of rain/hour

So amount of rain accumulated in 1 hour = \frac{2}{3}

Thus amount of rain accumulated in six hours is calculated by multiplying the amount of water accumulating per hour and 6

Amount of water accumulated in 6 hours = Amount of water accumulated in 1 hour \times 6

\text { Amount of water accumaulated in 6 hours }=\frac{2}{3} \times 6=4

<em><u>Another way:</u></em>

Let "n" be the amount of rain accumulated in 6 hours

1 hour ⇒ \frac{2}{3} rain accumulated

6 hours ⇒ "n"

By cross multiplication, we get

6 \times \frac{2}{3} = 1 \times n\\\\n = \frac{2}{3} \times 6 = 4

Hence, 4 inches of rain would fall in 6 hours.

4 0
3 years ago
(-0.4)^3 - (-0.4)^2.(-3)
Mnenie [13.5K]

Answer:

.416

Step-by-step explanation:

(-.04)^3=-.064

(-.064)-(-.04^2)(-3)

(-.064)-(.16)(-3)

(-.064)-(-.48)

.416

3 0
3 years ago
Read 2 more answers
Other questions:
  • Lynne feeds her cat 65 g of cat food per day. About how many ounces of cat food will she feed her cat in 5 weeks? 1 oz≈28.3 g
    8·1 answer
  • Together Juan and Maria can clean the house in 6 hours. Alone Juan can complete the job 2 hours faster than Maria. Find to the n
    9·1 answer
  • 35+14<br> Whats the distributive property to answer this?
    13·1 answer
  • Which information is necessary to solve this story problem? Sam had a total of 14 people at his skating party. The party lasted
    15·1 answer
  • What is the area of the following circle?
    12·1 answer
  • Find the value of x for m (arc AB)=23 and m(arc CD)=32 (the answer will be a decimal )
    14·1 answer
  • What is the 10th term of the arithmetic sequence defined by the formula
    11·1 answer
  • What number needs to be subtracted from both sides of the equation 40 = 25 + x in order to isolate the variable and solve for x?
    13·1 answer
  • Jodi used 30 cubic inches of clay to sculpt a triangular prism. The base of the triangles are 4 inches and the height of the tri
    12·2 answers
  • Help, show work please​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!