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PilotLPTM [1.2K]
3 years ago
5

Answer two questions about Equations A and B: A. 5x = 20

Mathematics
1 answer:
marusya05 [52]3 years ago
8 0

Answer: 20/5

Step-by-step explanation:

Divide 20/5

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Which graph shows a system of equations with no solutions?
podryga [215]

Graph of Parallel lines shows a system of equations with no solutions

Step-by-step explanation:

Consider a set of equations

7x - 2y = 16\\21x + 6y =24

If we solve this both equations using any one of the solving method, (Substitution method) then we will get

7x-2y=16\\7x=16+2y\\x=\frac{16+2y}{7}

substituting the following x in 2nd equation (21x + 6y = 24) We get

21(\frac{16+2y}{7} )+6y=24\\3(16+2y)+6y=24\\48+6y+6y=24\\12y=24-48\\y=-\frac{24}{12} \\y=-2

Put y= -2 in x equation

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Comparing these (x,y) values we can understand that they never meet at a point

4 0
2 years ago
Seven times a number decreased by three-fourths of the same number is 25. What is the number?
Tomtit [17]

Answer:

103/28

Step-by-step explanation:

Let the number be 'x'

Equation:-

7x - 3/4 = 25

7x = 25 + 3/4

7x = 100/4 + 3/4

7x = 103/4

x = 103/(4 x 7)

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5 0
3 years ago
Read 2 more answers
The solution to which system of equations has an x-value of 3?
ANEK [815]

Answer:

D)

Step-by-step explanation:

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