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hram777 [196]
3 years ago
13

I need help on this question

Mathematics
1 answer:
Paul [167]3 years ago
4 0
9P2 =72

= 9!/ (9-2)!
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PLEASE HELP I CANT CONTINUE WITH MY WORK UNLESS THESE ARE COMPLETE AND CORRECT
Snezhnost [94]

Answer:

1) x=3, y=-3

Step-by-step explanation:

10x + 7y = 9 —— (1)

-4x -7y = 9 —— (2)

(1) + (2)

6x = 18

x = 18/6

x = 3

put x=3 in (1)

10(3) + 7y = 9

30 + 7y = 9

7y = 9 - 30

7y = -21

y = -21/7

y = -3

please give me brainlist if it is helpful for you

6 0
3 years ago
What 5 consecutive odd numbers equal 200
dimulka [17.4K]

Answer:

{36, 38, 40, 42, 44}

Step-by-step explanation:

You are implying that you are adding up 5 consecutive numbers, and should use the word "add" or the word "sum."

"The sum of 5 consecutive odd numbers is 200" leads to:

x + (x+2) + (x+4) + (x+6) + (x+8) = 200.  Note how each number is 2 more than the number preceding it.  In this way you can guarantee that all of the 5 numbers are odd.

Summing up, we get 5x + 20 = 200, or 5x = 180.

Dividing both sides by 5, we get x = 36.

Then the 5 consecutive integers are

{36, 38, 40, 42, 44}.  These add up to 200.

Unfortunately, these are consecutive EVEN numbers, not odd numbers.  

Please ensure that you have copied down this problem correctly.

5 0
3 years ago
Factorize x^2 - 5x +4 <br> i will mark brainliest if correct
noname [10]

Answer:

(x-1)(x-4)

Step-by-step explanation:

factors of four that add up to negative five

7 0
2 years ago
Read 2 more answers
Is there anybody here good at medical terminology??? pls I need help on one of my questions.
saul85 [17]

Answer:

I could try.

Step-by-step explanation:

8 0
3 years ago
A = {red, green, blue, yellow} B = {orange, purple, black, blue} Find A U B.
Kipish [7]

Answer:

A∪B={   red , green , blue , yellow , orange , purple , black }

Step-by-step explanation:

Let A and B be two subsets Then A∪B represents the union of the two subsets which means that it consists of the elements present in A or B or in both A and B.

given A={ red , green , blue , yellow }

B={ orange , purple , black , blue }

Now A∪B={   red , green , blue , yellow , orange , purple , black }

for getting above first write all the elements in A then start writing elements of B and skip those elements of b which are already present in A and write all the elements of B.

8 0
3 years ago
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