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
Ad libitum [116K]
3 years ago
10

Simplify (a+1/a)^2-(a-1/a)^2​

Mathematics
1 answer:
scoray [572]3 years ago
4 0
Answer: 4/a

Explanation:
(a+1/a)^2 - (a-1/a)^2
= (a^2 + 2a + 1)/a^2 - (a^2 - 2a + 1)/a^2
= (a^2 + 2a + 1 - a^2 + 2a - 1)/a^2
= 4a/a^2
= 4/a
You might be interested in
If f(x) = [x] - 5, what is (86)?
tatuchka [14]

Answer:

81

Step-by-step explanation:

I am assuming that you are asking what is [x] - 5 if f(86).

When you have this kind of question, what you do is to substitute the variable inside the parenthesis, so like what is says, f(x). If the question replaces the variable x with 86, that means you input the number into the equation.

So [x] - 5, if f(86).

Substitute:

86 - 5

81

4 0
3 years ago
Write a real world problem that can be modeled by x-13>20.
BlackZzzverrR [31]

Alex and her friend were trying to find who had more pieces of candy. Her friend had 20. Alex had x but lost 13 of them. They found out that Alex had more.

So, x-13>20

7 0
4 years ago
A candle burns down at the rate of 0.5 inches per hour. The original height of the candle was 6 inches.
olasank [31]

Answer:

See below.

Step-by-step explanation:

"Part A:

(1,5.5)

(2,5)

(3,4.5)

(4,4)

(5,3.5)

(6,3)

Every hour (x value) I subtracted 0.5 from the candle height (y value) since it burns at 0.5 inches per hour.

Part B:

Yes, this is a function because there is a constant relationship between the input and the output.

Part C:

Yes, this will continue to be a function because there is still a constant relationship, even though its different than the first one.

(1,5.7)

(2,5.4)

(3,5.1) ect."

Answer is also here:

brainly.com/question/2872549?referrer=searchResults

-hope it helps

6 0
3 years ago
Can someone please help!?
bogdanovich [222]

Answer:

II

Step-by-step explanation

hope that helped

7 0
3 years ago
Please help with this qn :)
zepelin [54]

Answer:

4 is the length

Step-by-step explanation:

14 and 4

14 x 14 + 4 x 4 = 212

14 + 4 = 18

7 0
2 years ago
Other questions:
  • A high school had 2,300 students in 2010 which increased by 33 percent in the following four years. How many students are there
    11·1 answer
  • For the data, determine the median: 15.23, 16.43, 15.29, 17.67, 15.55, 16.68
    9·2 answers
  • 12 divided by 1,944
    11·1 answer
  • Given TS¯¯¯¯¯¯¯ and TU¯¯¯¯¯¯¯ are midsegments, PR=18.2, TS=6.5. Find QU . A. 9.1 B. 3.25 C. 13 D. 6.5
    15·1 answer
  • Two bags both contain blue marbles and green marbles. Bag A contains 6 blue marbles and 4 green marbles and Bag B contains 2 blu
    15·1 answer
  • What are the solution(s) to the quadratic equation 50 – x^2 = 0?
    11·2 answers
  • Suppose that a random sample of ​twenty-year-old men is selected from a population and that these​ men's height and weight are r
    5·1 answer
  • Solve the system of linear equations using elimination.
    12·1 answer
  • Lola gets two 20-minute breaks at work each day. She works 5 days a week. How much time does she spend on break each week?
    11·2 answers
  • A toy manufacturer wants to know how many new toys children buy each year. A sample of 1492 children was taken to study their pu
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!