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Rashid [163]
3 years ago
9

Help me please Solve the system algebraically using substitution.

Mathematics
1 answer:
cluponka [151]3 years ago
3 0

Answer:

y = 5/3

x = 8/3

Steps:

y = x - 1

2x + y = 7

Substitute y = x-1

(2x + x - 1 = 7)

Simplify: 3x - 1 = 7

Isolate x: 3x - 1 = 7:  x=8/3

Plug the valuse of x into the other equation (y = x- 1):    y = 8/3 - 1

8/3 - 1 = 5/3

y = 5/3

y = 5/3, x = 8/3

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Answer:

y=27.8

Step-by-step explanation:

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4 years ago
Which statement is true for the vertical number line? A. -2.5 is located below -3.5 . B. -4.8 is located below 4.8 . C. 3.25 is
meriva

Answer:

B. -4.8 is located below 4.8 .  TRUE

Step-by-step explanation:

The vertical line is called the Y - AXIS.

Here also, the integers are expressed as same as the horizontal axis.

.... -5, -4, -3, -2, -1 , 0 , 1 2,3 4,5 ....

In vertical line, If we move above 0, the value INCREASES.

If we move Below 0, the value DECREASES.

Now, consider the given cases:

A. -2.5 is located below -3.5 .

Here, as -3 lies Below -2.

So, -2 > -3 ⇒  -2.5  >  -3.5

So, -2.5 is located ABOVE 3.5.

B. -4.8 is located below 4.8 .

Here, as -4 lies Below 4.

So, 4 > -4 ⇒  4.8  >  -4.8

So, -4.8 is located BELOW 4.8.

C. 3.25 is located above 3.75 .

Here, 3.75  > 3.25  

⇒  3.75  is located ABOVE 3.25.

D. -0.5 is located below -1.5 .

Here, as -1.5 lies Below 0.5.

So, -0.5 > -1.5

⇒  -0.5  is located ABOVE -1.5.

E. 0 is located below -0.87 .

Here, as  -0.87  lies Below 0.

So,0  > -0.87

⇒  0  is located ABOVE-0.87.

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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siniylev [52]
The correct answer a 40
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