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KATRIN_1 [288]
2 years ago
13

2x + 7 + 29 = 90 Help me solve it

Mathematics
2 answers:
Dvinal [7]2 years ago
6 0
First add 7 and 29. Your equation would look like this 2x + 36 = 90. Then subtract 36 from both sides so 90-36=54. 2x=54 finally divide by 2
BartSMP [9]2 years ago
5 0

Answer:

x = 27

Step-by-step explanation:

look at the screenshot below it'll explain the answer

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En Vision Algebra 2
jeyben [28]

Step-by-step explanation:

goyoddittdydgidiydgixhxhzldgidgiugohfjlxugaufdh

5 0
2 years ago
Match the pairs of equations that represent concentric circles. Tiles
Darina [25.2K]
I will explain you and pair two of the equations as an example to you. Then, you must pair the others.

1) Two circles are concentric if they have the same center and different radii.

2) The equation of a circle with center xc, yc, and radius r is:

(x - xc)^2 + (y - yc)^2 = r^2.

So, if you have that equation you can inmediately tell the coordinates of the center and the radius of the circle.

3) You can transform the equations given in your picture to the form (x -xc)^2 + (y -yc)^2 = r2 by completing squares.

Example:

Equation: 3x^2 + 3y^2 + 12x - 6y - 21 = 0

rearrange: 3x^2 + 12x + 3y^2 - 6y = 21

extract common factor 3: 3 (x^2 + 4x) + 3(y^2 -2y) = 3*7

=> (x^2 + 4x) + (y^2 - 2y) = 7

complete squares: (x + 2)^2 - 4 + (y - 1)^2 - 1 = 7

=> (x + 2)^2 + (y - 1)^2 = 12 => center = (-2,1), r = √12.

equation: 4x^2 + 4y^2 + 16x - 8y - 308 = 0

rearrange: 4x^2 + 16x + 4y^2 - 8y = 308

common factor 4: 4 (x^2 + 4x) + 4(y^2 -8y) = 4*77

=> (x^2 + 4x) + (y^2 - 2y) = 77

complete squares: (x + 2)^2  - 4 + (y - 1)^2 - 1 = 77

=> (x + 2)^2 + (y - 1)^2 = 82 => center = (-2,1), r = √82

Therefore, you conclude that these two circumferences have the same center and differet r, so they are concentric.
5 0
3 years ago
If VZ=p–7 and WY=p–21, what is the value of p?
sveta [45]

Using the midline property;

2wy = vz

2(p - 21) = p - 7

2p - 42 = p - 7

2p - p =  - 7 + 42

p = 35

8 0
2 years ago
Which of the following is not an extensive physical property?
Charra [1.4K]
D. Color

My explanation for this answer is that Color is for atomic mass which in this case mass is not the answer so my answer is D. Color

Hope this Helps you !
3 0
3 years ago
Read 2 more answers
Help again for more points
daser333 [38]

Answer:

F) 1,325.4 in.

:D:D:D:D

4 0
3 years ago
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