3 years ago

Solve the system of linear equations by elimination. 12x - 7y = -2 8x + 11y = 30

Mathematics

1 answer:

Sergio039 [100]3 years ago

7 0

Answers: (y = 2) and (x = 1)

Steps:

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How to simplify this?<br>(3a-b)+2a

taurus [48]

Combine like terms

3a + 2a = 5a

5a - b

5a - b is your answer

hope this helps

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2 years ago

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as Saturn revolves around the sun, it travels at a speed of approximately 6 miles per second. convert this speed to miles per mi

3241004551 [841]

Given:

Speed = 6 miles per second

If the Saturn revolves 6 miles in 1 second then the speed is:

$\begin{gathered} In\text{ 1 second distance is 6 miles} \\ So\text{ in 60 second distance is =6}\times60\text{ miles} \\ =360 \end{gathered}$

So speed in minutes is 360 miles per min.

In 3 minutes traveling distance is:

$\begin{gathered} =360\times3 \\ =1080 \end{gathered}$

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9 months ago

Question 2 (1 point)

Marrrta [24]

Answer:

acute

Step-by-step explanation:

obtuse is over 90°

acute I less that 90°

and right is exactly 90°

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3 years ago

What is the solution of the system?

evablogger [386]

Subsitution

solve for y in first equation
add 2x to both sides
y=2x+8
sub 2x+8 for y in second equation
16+4x=2(2x+8)
divide both sides by 2
8+2x=2x+8
true
there are infinite solutions for x
therefor infinite soltions for y

there are an infinite number of solutions

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3 years ago

In the graph shown, at what value of x does the value of y change from increasing to decreasing or decreasing to increasing?

kotykmax [81]

Answer:

Your original answer is corrrect

Step-by-step explanation:

At X= -1, Y decreases and then it rises back to -1 and continues to increase

3 0

3 years ago

Solve the system of linear equations by elimination. 12x - 7y = -2 8x + 11y = 30​

Solve the system of linear equations by elimination. 12x - 7y = -2 8x + 11y = 30