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slava [35]
3 years ago
11

Can someone please help me with this?

Mathematics
1 answer:
lutik1710 [3]3 years ago
8 0

Answer:

(-78/29, -619/29)

Step-by-step explanation:

Since both equations are equal to y we can set them equal to each other

15x+19 = 1/2x - 20

Subtract 1/2x from each side

15x -1/2x +19 = -20

Subtract 19 from each side

14 1/2 x +19-19 = -20-19

Changing to an improper fraction

29/2 x = -38

Multiply each side by 2/29

x = 2/29 * -38

x = -78/29

Now find y

y = 1/2x - 20

y = 1/2 (-78/29) -20

y = -39/29 - 20

Get a common denominator

 =-39/20 - 580/29

 = -619/29

  -39/29 -580/29

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Need help please i dont get it
Talja [164]

Answer:

>

Step-by-step explanation:

-27/80 > -73/80

If you make a number line they are both in the negatives. If they are both in the negatives then whatever one is closer to 0 is greater.  

3 0
3 years ago
Read 2 more answers
Bearings are tricky and I though I had this
Leya [2.2K]

Answer:

241°

Step-by-step explanation:

You are given the triangle internal angle (N) at Naples = 46°, and the side opposite a = 765 km. You are given the side b = 515 km, and asked to find an angle related to the internal angle opposite (C).

By the law of sines, the internal angle (C) at Canton is ...

sin(C)/b = sin(N)/a

C = arcsin((b/a)sin(N)) = arcsin(515/765·sin(46°)) ≈ 28.964°

The bearing from Elgin to Canton will be 270° less this angle, so is about 241°.

_____

Comment on your answer

Apparently, you added 29° to 270°, rather than subtracting. Since the direction from Elgin to Canton is south of west, the bearing angle must be between 180° and 270°. Note that a line west from Elgin will be parallel to the line east from Canton, so you can take advantage of alternate interior angles being congruent where the Elgin-Canton line crosses those parallel east-west lines.

7 0
3 years ago
What are the center and radius of the circle defined by the equation ?
RUDIKE [14]
You didn't give us the equation, but circle equations are in the form;
(x-h)^2 + (y-k)^2 =r^2 where h and k are the x and y coordinate of the center and r is the radius of the circle squared. 
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3 years ago
What is equivalent to n^-10/n^2
denis-greek [22]

Answer:

1/n^12 or n^-12

Step-by-step explanation:

=n^-10 / n^2

=1/n^10 / n^2

=(1/n^10) *(1/n^2)

=1/n^12

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2 years ago
What is -7 = x/2 + 1
marusya05 [52]

-7 = x/2 + 1

Subtract one from both sides

-8 = x/2

Multiply two on both sides

-16 = x

Answer, x = -16

Checking,

-7 = (-16/2) + 1

-7 = -8 + 1

-7 = -7

7 0
3 years ago
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