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Bezzdna [24]
3 years ago
8

7(z+2)-3z=44 quiero que me ayuden a resolver este problema por favor

Mathematics
1 answer:
slega [8]3 years ago
5 0
No hablo expanol

7(z+2)-3z=44
7z+14-3z=44
7z-3z+14=44
4z+14=44
-14        -14
4z+14-14=44-14
4z+0=30
4z=30
1/4  1/4
(4z)/4=30/4
(4/4)z=15/2
1z=15/2
z=15/2



z=15/2
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Each line represents a proportional relationship. Write an equation for each line. Show your work.
tiny-mole [99]

Answer:

The equation of line a is y = x

The equation of line b is y =  \frac{2}{3} x

Step-by-step explanation:

The equation of the proportional is y = m x, where

  • m is the slope of the line (constant of proportionality)

The rule of the slope of a line is m = \frac{y2-y1}{x2-x1} , where

  • (x1, y1) and (x2, y2) are two points on the line

∵ Line a passes through points (0, 0) and (3, 3)

∴ x1 = 0 and y1 = 0

∴ x2 = 3 and y2 = 3

→ Substitute them in the rule of the slope above

∵ m = \frac{3-0}{3-0}=\frac{3}{3}

∴ m = 1

→ Substitute in the form of the equation above

∴ y = (1)x

∴ y = x

∴ The equation of line a is y = x

∵ Line b passes through points (0, 0) and (3, 2)

∴ x1 = 0 and y1 = 0

∴ x2 = 3 and y2 = 2

→ Substitute them in the rule of the slope above

∵ m = \frac{2-0}{3-0}=\frac{2}{3}

∴ m = \frac{2}{3}

→ Substitute in the form of the equation above

∴ y = (\frac{2}{3}) x

∴ y =  \frac{2}{3} x

∴ The equation of line b is y =  \frac{2}{3} x

7 0
3 years ago
3x - 6<br> _____<br> x - 2 ?????????
slega [8]
Answer:  The expression given simplifies to:  3 .
_________________________________________________
Explanation:  
________________________________________________
Given:  (3x - 6) / (x-2) ;
___________________________
Factor the numerator into:  3(x-2).
________________________________
Now, rewrite the expression as:
____________________________
    \frac{3(x-2)}{(x-2)} ;
________________________________________
The "(x - 2)"  values cancel to "1" ; since "(x - 2) ÷ (x - 2) = 1" ; 
_______________________________________________________
and we are left with:  "3 ".
________________________________
6 0
3 years ago
A) 9<br> B) 0<br> C) Undefined<br> D) 6
mezya [45]

Answer:

<h2>B) 0</h2>

Step-by-step explanation:

The slope of a horizontal line is equal to 0.

The slope of a vertical line is undefined.

The formula of a slope:

m=\dfrac{y_2-y_!}{x_2-x_1}

Put the coordinates of the pojnts from the graph (2, 9) and (4, 9):

d=\dfrac{9-9}{4-2}=\dfrac{0}{2}=0

8 0
3 years ago
NEED HELP ASAP OR NOW!!!
Leokris [45]
The first question would be A and Cis the answer for the second question!!
7 0
3 years ago
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ELEN [110]

Answer:

160 cubic meters

Step-by-step explanation:

Volume = l*w*h

= 8*5*4

=40*4

=160 cubic meters

7 0
4 years ago
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