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Marta_Voda [28]
3 years ago
14

How many different ways can four cars in a train be arranged?

Mathematics
1 answer:
mel-nik [20]3 years ago
7 0
The answere is 24 ways ( 4 × 3 × 2)
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What binomial do you have to add to the polynomial:
marshall27 [118]

Answer:

a)  -2x^2+5xy

b)  -3y^2+5xy

Step-by-step explanation:

<u>Part (a)</u>

Given polynomial  :2x^2+3y^2-5xy+1

The binomial that should be added to the given polynomial to get a polynomial that does not contain the variable x is:

-2x^2+5xy

(2x^2+3y^2-5xy+1)+(-2x^2+5xy)

=2x^2+3y^2-5xy+1-2x^2+5xy

=2x^2-2x^2+3y^2-5xy+5xy+1

=3y^2+1

<u>Part (b)</u>

Given polynomial  :2x^2+3y^2-5xy+1

The binomial that should be added to the given polynomial to get a polynomial that does not contain the variable y is:

-3y^2+5xy

(2x^2+3y^2-5xy+1)+(-3y^2+5xy)

=2x^2+3y^2-5xy+1-3y^2+5xy

=2x^2+3y^2-3y^2-5xy+5xy+1

=2x^2+1

7 0
2 years ago
The solution to -2x/3+7&lt;15 is the set
svlad2 [7]

Answer:

1)  x > -12

Step-by-step explanation:

first, subtract 7 from each side of the inequality to get:

-2/3x < 8

multiply each side by the reciprocal of -2/3 which is -3/2 to get:

x > -24/2

notice the symbol has been reversed because that is the rule whenever you multiply or divide an equality be a negative value

simplified, answer is x > -12

5 0
2 years ago
A group was selling tickets for their fundraising event. For the first day of the event, they sold 30 pre-sale tickets and 45 ti
goldfiish [28.3K]

Answer:

4

Step-by-step explanation:

4 0
3 years ago
When will 6 month pass and what month and date will it be on?
suter [353]
After 6 months, It will be 2/23/2018
8 0
3 years ago
Need Help Due Tomorrow <br><br> MUST SHOW WORK!!!<br> DONT BOTHER ANSWERING IF YOU CANT SHOW WORK
Dafna1 [17]

Answer:

B!

Step-by-step explanation:

we know that (x-5) and (y-6) must add up to 129 because 180-51 is 129

now let's plug in the values to see

51-5= 66 63-6 = 57

57+66 is 123, not this one, let's repeat the same step

77-5 is 72, 63-6 is 57, these added is 129

5 0
3 years ago
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