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podryga [215]
3 years ago
14

How many solutions does the equation 6z − 3z − 7 = −2 + 3 have?

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
6 0

Answer:

Equation have Unique solution with z=2.67

Step-by-step explanation:

Given Equation:

6z - 3z - 7 = -2 + 3

Solving the equation:

                   6z-3z-7=1

Adding 7 to both sides:

                      6z-3z-7+7=1+7\\\\6z-3z=8\\\\3z=8\\\\z=8/3 \\\\or\\\\ z=2.67

The Equation have Unique solution with z=2.67

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Which equation shows 2.4 as the constant of proportionality?
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Subtract: 1/3 - 5/6? *<br>​
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3 years ago
A system of equations has 1 solution. If 4x - y = 5 is one of the equations, which could be the other equation?
Nuetrik [128]

answer :

A. y = – 4x + 5

Step-by-step explanation:

make y = 4x-5 equal to each of the answer choices and see if you get an answer

STEPS:

1.

make 4x - y = 5 into a y= equation

4x - y = 5 is  y = 4x-5

2.

then make y = 4x-5 equal to each of the answer choices and see if you get an answer

A.

4x-5 = -4x+5

8x = 10

x = 10/8 = 5/4

yes, it has one solution

its also an intersecting line because

one line has 4x and the other has -4x

4x and -4x are slopes and opposite signs so

the lines are intersecting

B.

4x-5 = 4x-5

since they are the same on both sides of the equal sign they have

infinite solutions

they are also both the same line

C.

2y=8x-10 when simplified is y=4x-5

so its just like choice B

they are also both the same line

4x-5 = 4x-5 which is

0 = 0

since they are the same on both sides of the equal sign

infinite solutions

they are also both the same line

D.

-2y=-8x-10 when simplified is y=4x+5

4x-5 = 4x+5 when you work it out you get the answer

0 = 5

since when you solve the equation and get 0 = 5

that means its there is no solution

its also parallel line because both lines have 4x as a slope

brainly.com/question/12706348

8 0
2 years ago
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