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
Shkiper50 [21]
3 years ago
9

1. Kyle is using elimination to solve the system

Mathematics
1 answer:
Andrei [34K]3 years ago
7 0
I think it’s D but I am not sure
You might be interested in
N is a positive integer
Murrr4er [49]

Part (1)

n is some positive integer. Let's say for now that n is even. So n = 2k, for some integer k

This means n-1 = 2k-1 is odd since subtracting 1 from an even number leads to an odd number.

Now multiply n with n-1 to get

n(n-1) = 2k(2k-1) = 2m

where m = k(2k-1) is an integer

The result 2m is even showing that n(n-1) is even

------------

Let's say that n is odd this time. That means n = 2k+1 for some integer k

And also n-1 = 2k+1-1 = 2k showing n-1 is even

Now multiply n and n-1

n(n-1) = (2k+1)(2k) = 2k(2k+1) = 2m

where m = k(2k+1) is an integer

We've shown that n(n-1) is even here as well.

------------

So overall, n(n-1) is even regardless if n is even or if n is odd.

Either n or n-1 will be even. If you multiply an even number with any number, the result will be even.

=======================================================

Part (2)

n is some positive integer

2n is always even since 2 is a factor of 2n

2n+1 is always odd because we're adding 1 to an even number. The sequence of integers goes even,odd,even,odd, etc and it does this forever.

-----------

Another way to see how 2n+1 is odd is to divide 2n+1 over 2 and you'll find that we get (2n+1)/2 = 2n/2+1/2 = n+0.5

The 0.5 at the end is not an integer, so there's no way that (2n+1)/2 is an integer; therefore 2n+1 is odd.

6 0
3 years ago
a hiking trail is 20 kilometers long. park organizers want to build 5 rest stops for hikers with one on each end of the trail an
ICE Princess25 [194]

The distance that will separate each rest stop is 4 kilometers.

<h3>What is the distance?</h3>

Division is the process of parting a number into equal parts using another number. The sign used to denote division is ÷. Division is one of the basic mathematical operations.

The distance = length of the trail / number of rest stops

20 km / 5 = 4km

To learn more about division, please check: brainly.com/question/13281206

#SPJ1

3 0
2 years ago
Will mark brainliest for whoever answers correctly
siniylev [52]
I think it is D:{5,-infinity}
6 0
3 years ago
What are the solutions to the quadratic equation xº - 36 = 0?
77julia77 [94]

Answer:

A I am pretty sure becuase I know math LOL

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
jack wants to paint his walls. two walls are 12 ft by 8 ft and two walls are 10 ft by 8 ft. what is the area to be painted? if o
Ksivusya [100]

Answer:

352 ft (squared)  , he will need 12 paint cans

Step-by-step explanation:

Two 12 by 8ft walls = 192 ft in area, Two 10 by 8ft walls = 160 ft in Area, that equals 352 ft total, 352/30=11.73 repeated, round up to 12

4 0
2 years ago
Other questions:
  • Which ratio is smaller 3/5 or 7/10
    5·1 answer
  • Mike can take the field in 12 hours and his brother Phil can plow it in 15 hours. how long will it take them to plow it if they
    5·1 answer
  • Find the inverse of the function y=2x^2+2
    13·1 answer
  • Find the product for these questions  1.( 2x ) ( 10x ) 2.  -3m( m + 8 ) 3. 4d( 2d -9 ) 4. ( 3x + 4 ) ( x -2 ) 5. ( 2y -1 ) ( 4y
    12·2 answers
  • Jonah sets the table for breakfast and dinner every Monday Tuesday Wednesday and Friday. how many times does he set the table in
    10·1 answer
  • What is y=-2/9x+3 written in standard form using integers.
    10·1 answer
  • If f(x)=-5x +2 and g(x)=1/2x +4, find f(g(-6)).
    5·1 answer
  • 34. Find the mean for the following data X F 10 3 12 5 14 4 16 5 18 3​
    7·1 answer
  • !!!!!!
    5·1 answer
  • Points A and B lie on line EF.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!