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Tresset [83]
2 years ago
9

4x+9/y+11=0 and 6/y -3x=8​

Mathematics
1 answer:
ladessa [460]2 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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Add or subtract as indicated -3 4/5 + 9 7/10 - 11/20
LenaWriter [7]

Answer:

5 7/20

Step-by-step explanation:

-3 4/5+9 7/10-11/20

=-19/5+9 7/10- 11/20

=-19/5+97/10-11/20

=59/-11/20

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7 0
2 years ago
How many inches is each slice of pizza?
mariarad [96]

Hey!


First, let's find the area. The formula for finding area of a circle is: π · r²


Radius is ½ of the diameter. Divide the diameter by 2 to get the radius.


d = 18

18 ÷ 2 = 9


r = 9

r² = 9 × 9 = 81


The area of the whole pizza is 81π. There are 10 slices. Divide the area of the whole pizza by 10 to find the area of 1 slice.


81π ÷ 10 = 8.1π


<em>That means each slice is 8.1π inches²</em>

4 0
3 years ago
Read 2 more answers
Click on the graph below to create a quadrilateral with vertices at the following points. (-4,9), (-8,9), (-9,7), (-9, 4)​
Shalnov [3]

Given (-4,9) (-8,9),(-9,7,(-9,4)

...

To Find : plot the point and draw quadrilateral

Solution:

(-4,9)

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(-9,4)

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join (-9,7) with (-8,9) and (-9,4)

Quadrilateral is constructed

4 0
2 years ago
How do you write 287% as a fraction or mixed number in simplest form? Submit
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As a fraction: 287/100

As a mixed number: 2 87/100

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Algebraic Expressions with Exponents Quiz
trapecia [35]

Answer:

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7 0
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