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Jet001 [13]
3 years ago
14

Tìm x biết x/7=6/-21

Mathematics
1 answer:
Jet001 [13]3 years ago
5 0

Answer:

The value of x = 2

Step-by-step explanation:

\sf{}

=> x/7=6/-21

=> -21x= 7×6

=> x= 42/21

=> x= 2

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If a line has a slope of 9/5. If one of the points on the line is (-10, -16), which could be another point?
zlopas [31]

Answer:

(–5, –7)

Step-by-step explanation:

From the question given above, the following data were obtained:

Slope = 9/5

Coordinate 1 = (–10, –16)

x₁ = –10

y₁ = –16

Coordinate 2 = (x₂, y₂)

Next, we shall determine the change in x and y coordinate. This can be obtained as follow:

Slope = change in y–coordinate / change in x–coordinate

Slope = Δy / Δx

Slope = 9/5

9/5 = Δy / Δx

Thus,

Δy = 9

Δx = 5

Next, we shall determine the second coordinates as follow:

Δy = y₂ – y₁

Δx = x₂ – x₁

For x–coordinate:

x₁ = –10

Δx = 5

Δx = x₂ – x₁

5 = x₂ – (–10)

5 = x₂ + 10

Collect like terms

x₂ = 5 – 10

x₂ = – 5

For y–coordinate:

y₁ = –16

Δy = 9

Δy = y₂ – y₁

9 = y₂ – (–16)

9 = y₂ + 16

Collect like terms

y₂ = 9 – 16

y₂ = – 7

Coordinate 2 = (x₂, y₂)

Coordinate 2 = (–5, –7)

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3 years ago
Which statement is true about the equations-3x 4y 12 and tx 1?
nydimaria [60]

We need to solve -3x+4y=12 for x

Let's start by adding -4y to both sides

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Now substitute 4/3 y -4 for x in 1/4 x - 1/3 y =1

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Now combine like terms

(1/3y -1/3y) + (-1) =1

= -1

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Now add 1 to both sides

0=2

So there are no Solutions

The answer is C


I hope that's help Will :)

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