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9966 [12]
3 years ago
7

5x -4y = -23 -5x + 9y =8

Mathematics
1 answer:
NARA [144]3 years ago
4 0

Answer:

Let's solve for x.

5x−4y=−23−5x+9y

Step 1: Add 5x to both sides.

5x−4y+5x=−5x+9y−23+5x

10x−4y=9y−23

Step 2: Add 4y to both sides.

10x−4y+4y=9y−23+4y

10x=13y−23

Step 3: Divide both sides by 10.

10x

10

=

13y−23

10

x=

13

10

y+

−23

10

Answer:

x=

13

10

y+

−23

10

Step-by-step explanation:

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Short Response
garik1379 [7]

Answer:

(a)2(89x+84)

(b)2(89x+84-x^2\pi)

Step-by-step explanation:

The dimensions of the larger rectangular field are:

  • Length=5x + 12; Width = 9x + 14.

The dimensions of the smaller rectangular soccer field are:

  • Length=5x; Width = 9x.

(a)Area of the part of the field that is outside the soccer field

=Area of the larger rectangular field - Area of the Soccer Field

=(5x+12)(9x+14)-5x(9x)

=(5x)(9x)+70x+108x+168-5x(9x)

=178x+168

=2(89x+84)

(b)Radius of the Semicircular Fountain =2x

From Part (a),

Area of the larger rectangular field - Area of the Soccer Field=178x+168

Area of the Semicircular Fountain =\dfrac{\pi r^2}{2} =\dfrac{\pi (2x)^2}{2} =\dfrac{4x^2\pi}{2} =2x^2\pi

Area of the Field that does not include the soccer  field or the fountain.

=Area of the larger rectangular field - Area of the Soccer Field-Area of the Semicircular Fountain

=178x+168-2x^2\pi\\=2(89x+84-x^2\pi)

8 0
4 years ago
This makes no sense, I don’t understand
julsineya [31]

Answer:

the range where we see the function is between x=0 and x=7

its B

A is impossible btw, no number is smaller or equal to 0 AND bigger or equal to 7

please brainliest

8 0
3 years ago
A total of 120 smoothies were sold on the first day of the month from July-December. True or false
melisa1 [442]

Answer:

the answer would basically be 720 smoothies in total from Jul.-Dec.

Step-by-step explanation:

YWW :)

6 0
3 years ago
Q1 Express in the form 1.0<br> 4:12
kherson [118]

Answer:

Step-by-step explanation:

4:12= 1:3

3 0
3 years ago
Slope of the line that passes through (3, -11) and (0, 4), please!
Lorico [155]

Answer:

-5

Step-by-step explanation:

slope formula= \frac{y1 - y2}{x1 - x2}

slope of line

=  \frac{4 - ( - 11)}{0 - 3}  \\  =  \frac{4 + 11}{ - 3}  \\  =  \frac{15}{ - 3}  \\  =   - 5

6 0
3 years ago
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