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Doss [256]
3 years ago
6

What is the value of the expression when y=2

Mathematics
1 answer:
kykrilka [37]3 years ago
8 0
What is the expression?
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Solve the system using the elimination method.
Sloan [31]

Answer:

x=151/64   y=9/8 z=-51/32

Step-by-step explanation:

2x+2y+5z- (2x-y+z)=-1-2

3y+4z=-3

2x+2y+5z- (2x+4y-3z)=-1-14

-2y+8z=-15

We have two equations 3y+4z=-3 and -2y+8z=-15 (We get it due to elimination method)

3y+4z=-3 (2)

-2y+8z=-15 (-3)

6y+8z=-6

6y-24z=45

(6y+8z)- (6y-24z)= -6-45

32z=-51

z=-51/32

3y-204/32=-3

3y= -96/32+204/32

3y=108/32

y=36/32=9/8

2x+2*9/8+5*(-51/32)=-1

2x+9/4-255/32=-1

2x+72/32-255/32=-1

2x-183/32=-32/32

2x=151/32

x=151/64

8 0
3 years ago
EXPERT HELP: EXPLAIN THE ANSWER AND DON'T GUESS
exis [7]

Answer:

A or C

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Find the rule. Solve for n
Serga [27]
Is there more to this question?
3 0
3 years ago
The slope of a line is undefined, and the x-intercept is -7. What is the equation of the line? x = -7 y = -7 y = -7x
e-lub [12.9K]
Answer is <span>x = -7
...................................................</span>
5 0
3 years ago
Read 2 more answers
What’s the value of x? :/
kolbaska11 [484]

Answer:

x = 27

Step-by-step explanation:

According to congruent chords and arcs theorem, if \overline{XY} \cong \overline{ZY} then \arc{XY} \cong \arc{ZY}.

This means that \arc{XY} = \arc{ZY} = (6x - 20) degrees

Thus:

\arc{XY} + \arc{ZY} + \arc{ZX} = 360 (full circle = 360°)

\arc{XY} = (6x - 20)

\arc{ZY} = (6x - 20)

\arc{ZX} = 76

Plug in the values into the equation

(6x - 20) + (6x - 20) + 76 = 360

6x - 20 + 6x - 20 + 76 = 360

Add like terms

12x + 36 = 360

Subtract 36 on both sides

12x = 360 - 36

12x = 324

Divide both sides by 12

x = 27

8 0
3 years ago
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