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Tresset [83]
3 years ago
9

4x+9/y+11=0 and 6/y -3x=8​

Mathematics
1 answer:
ladessa [460]3 years ago
8 0

9514 1404 393

Answer:

  (x, y) = (-2 12/17, -51)

Step-by-step explanation:

Here is the answer to ...

  4x+\dfrac{9}{y}+11=0\\\\\dfrac{6}{y}-3x=8

If you mean something else, then parentheses are needed.

__

Let z = 1/y. Then the equations in general form are ...

  4x+9z+11=0\\3x-6z+8=0

The solution (cross multiplication method) is ...

  x = (9·8 -(-6)·11)/(4(-6)-3·9) = 138/-51 = -2 12/17

  z = (11·3 -8·4)/-51 = -1/51

  y = 1/z = -51

The solution is (x, y) = (-2 12/17, -51).

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Marge has 4 more than 2 times as many books as Susan. If Marge has 22 books and x is the number of books that Susan has, the rel
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Susan has 9 books

Step-by-step explanation:

  • Step 1: Given the relationship between the number of books that Susan and Marge has, find x.

4 + 2x = 22

2x = 18

x = 18/2 = 9

⇒ Number of books that Susan has is 9

6 0
3 years ago
1.994 x 10^-23 1.67 x 10^-24 what are the difference
Marina86 [1]

Answer:

1.827 x 10^-23

Step-by-step explanation:

(1.994 x 10^-23) - (1.67 x 10^-24) = 1.827 x 10^-23


3 0
4 years ago
What is 2 fifth divided by 2 is?
inn [45]

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8 0
3 years ago
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Which expression is equivalent to 2.2 - 2.5?
Fiesta28 [93]

Answer:

C

Step-by-step explanation:

2.2-2.5

Since a + and a - make a minus if we have 2.2+(-2.5) we would get 2.2-2.5. So C is the anwser.

7 0
3 years ago
Help. please..<br>with steps.​
Mandarinka [93]

Answer:

  Option 2

Step-by-step explanation:

The account balance multiplier for the compound interest option is ...

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The account balance multiplier for the simple interest option is ...

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_____

£2000 · (1.48 -1.477455) ≈ £5.09

__

In the above formulas, r is the interest rate, and t is the number of years.

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