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EleoNora [17]
3 years ago
6

Describe the possible solution sets for a system of two linear equations, and explain why these are the only possibilities.

Mathematics
1 answer:
Lisa [10]3 years ago
6 0
The graphical representation of a system of two linear equations is two lines. These two lines can
(1) interesct at a point (x, y)
(2) not intersect and be parallel (no solution)
(3) sometimes turn out to be the same line (infinitely many solutions).

These are the only possibilities for a system of two linear equations because when graphed, they will only do these three things.

Please comment with any questions!
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What is the equation of the line that is parallel to y=-x+4 and that passes through (-2,-2)?
Gwar [14]

Answer:

y=-x-4

Step-by-step explanation:

5 0
3 years ago
A rectangle has a width of 5 meters and a length of 7 meters. A similar rectangle has a width of 15 meters. What is the length o
JulijaS [17]
I believe 21 because 5×3 is 15 so 7×3=21
6 0
3 years ago
Read 2 more answers
I'm not sure ic I just leave like since I can't combine
sveticcg [70]
2\sqrt{12} - 7\sqrt{3} 
= 4\sqrt{3} - 7\sqrt{3}
= Since, we have same bases, we can subtract!
= To get,
= -3\sqrt{3} Answer
5 0
3 years ago
Use a 95​% prediction interval to predict the useful life of a brand A cutting tool when the cutting speed is 45 meters per minu
qwelly [4]

Answer:

<em>The answer resides in the explanation.</em>

<em>Pls rate as brainliest </em>

Step-by-step explanation:

The predicted useful life of a brand A cutting tool when the speed is 45 meters per minute is 1.2 to 5.5 hours.

The predicted useful life of a brand B cutting tool when the speed is 45 meters per minute is 3.4 to 5.4 hours.

The prediction interval for brand A is larger than the prediction interval for brand B because the estimated standard error of  y^ is different for the two intervals.

The prediction intervals are both larger than the corresponding confidence intervals.

The standard error for the estimated mean value of y is smaller than the standard error for the predicted value of y.

The predicted useful life of a brand A cutting tool that is operated at 100  meters per minute is -0.59 hours

The actual predicted useful life of a brand A cutting tool when the speed is 100 meters per minute is 0.0 to 2.3 hours.

6 0
3 years ago
0.5x -2 = 1.5x + 0.15
frutty [35]

Answer: x=−2.15

Step-by-step explanation : Alright Let's solve your equation step-by-step.

0.5x−2=1.5x+0.15

Step 1: Subtract 1.5x from both sides.

0.5x−2−1.5x=1.5x+0.15−1.5x

−x−2=0.15

Step 2: Add 2 to both sides.

−x−2+2=0.15+2

−x=2.15

Step 3: Divide both sides by -1.

−x

−1

=

2.15

−1

x=−2.15<em>        hope this helped!- Alex</em><u> </u>

8 0
3 years ago
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