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
ki77a [65]
3 years ago
11

Prove algebraically that n^2-2-(n-2)^2 is always even

Mathematics
2 answers:
Juliette [100K]3 years ago
6 0

Answer:

It is even because it is equal to 2(2n-3) so you can divide it by two and get (2n-3)

Step-by-step explanation:

{n}^{2}  - 2 - ( {n}^{2}  + 4 - 4n) =  \\  {n}^{2}  - 2 - {n}^{2}   - 4  +  4n = \\ 4n - 6 = 2(2n - 3)

tresset_1 [31]3 years ago
3 0

Step-by-step explanation:

You might be interested in
100 points! Please help asap! Look at the picture attached. My teacher said that both 1 and 2 are neither can someone explain wh
Neko [114]

Answer:

Your teacher is right, there is not enough info

Step-by-step explanation:

<h3>Question 1</h3>

We can see that RS is divided by half

The PQ is not indicated as perpendicular to RS or RQ is not indicates same as QS

So P is not on the perpendicular bisector of RS

<h3>Question 2</h3>

We can see that PD⊥DE and PF⊥FE

There is no indication that PD = PF or ∠DEP ≅ FEP

So PE is not the angle bisector of ∠DEF

6 0
3 years ago
What Is 5/6 + (-1 1/6)?
laila [671]

Answer: the answer is 0.3 but the the is ongoing so 0.33

Step-by-step explanation:

3 0
3 years ago
A potato launcher uses a spring that can apply a force of 20N to potato’s. He launches a 100 gram potato, what is the accelerati
shepuryov [24]

Answer:

200 m s^-2.

133.33 ms^-2.

100 m s^-2.

Step-by-step explanation:

Use Newton's Second Law of motion:

Force = mass * acceleration

The force is in Newtons so the mass must be in kilograms#

100 g = 0.1 kg. So:

20 = 0.1 * a

a = 20/ 0.1 = 200 m s^-2.

We calculate the acceleration for  the 150g and 200g potato in the same way.

3 0
3 years ago
The amount of money in a bank account increased by 21.5% over the last year. if the amount of money at the beginning of the year
OLga [1]

Answer:

In order to answer this question we are going to need more information.  Such as what does N =

Step-by-step explanation:

Please provide more information before we can help you!


Thanks,


Kindly


Daniel

5 0
3 years ago
Simply each question
dalvyx [7]
2x-8y////2r+5+3r-s+11=5r+16-s////-7x+7
8 0
3 years ago
Other questions:
  • A jogger ran at a rate of 5.4 miles per hour. Find the jogger's exact rate, in feet per minute
    15·1 answer
  • I need help please?!
    5·1 answer
  • What is the value of a if (2a +3) - (4a-8)= 7
    11·1 answer
  • HELP! HELP! HELP! A function and its inverse are shown on the graph. Which answer pairs a possible domain restriction for f(x) a
    8·2 answers
  • Find the monomials <br> a. 100x^2=(?)^2<br> b. 49y^4x^6= (?)^2
    12·1 answer
  • The school soccer coach records the number of goals some players have scored so far this season. The dot plot of the number of g
    15·1 answer
  • Which is the equation of an asymptote of the hyperbola whose equation is
    9·2 answers
  • Marking brainliest <br><br> Please help
    9·2 answers
  • For each expression in the table, select which number line model, If any, can be used to represent the expression. Select all ap
    15·1 answer
  • Find the length of DE using the distance formula.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!