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daser333 [38]
3 years ago
9

Write a system of linear equations that does not have a solution. Write each equation in y = mx + b form and explain why it does

not have a solution.
Mathematics
1 answer:
Ivan3 years ago
6 0
For a system of linear equations to have no solution, they must be parallel. If you imagine the graph of two parallel lines, they can never intersect, meaning there cannot be a solution/a point that is on both lines.

For two lines to be parallel they must have the same slope, so the m value of both equations are the same. The b value can be any value you want, as long as they don't have the same b value (or else they'd be the same line! and the same lines have an infinite number of solutions).

One pair could be:
y=3x+3 and y=3x+9

But you can come up one yourself you'd like :)
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Of 11 available candidates for membership in a university committee, 6 are men and 5 are women. the committee is to consist of 4
melomori [17]
330 possible selections are possible

5 0
4 years ago
Which method is valid for proving that two circles are similar?
Grace [21]
First:

a. ratio of the diameter to the radius
       the ratio of the diameter to the radius for any circle is always going to be 2:1          because the diameter is 2 times the legnth of the radius any time so A is not                the right answer

b.  the degrees of the circle is always 360, the circumference is the distance around the circle, so that would be a good indicator since 360 is constant, but the circumference can change, and if they are the same, then the circles are similar. so B is the right answer

c.  Ratio of area to circumference. area=pir^2, and circumference=2pir
this is a good indicator becuase the ratio of the area and the circumference is different for every circle so c is the right answer

D.  the ratio of the diameter to the circumference  diameter=2r circumference=2pir
circumference=pi time diameter so the ratio of the diameter is 1:pi
this is not a good indicator so this is not the right answer


The answers are B and D, but if the teacher asks for only one, then I would pick c
3 0
3 years ago
Please help!! (Only if you know if not I will report you)
Flura [38]

Answer:

first one conditional

second absolute value

third identity

pretty sure last one is conditional

Step-by-step explanation:

8 0
3 years ago
Simplify<br> 9³ x 9⁵<br> 45 x ³y
cupoosta [38]

Answer:

The first one can be simplified, but the second one cannot be (that i know of). The first one simplified would be 9 to the power of 8.

Step-by-step explanation:

5 0
3 years ago
Joshua spends 25 minutes of each day reading. He reads d days a week. Let m represent the number total minutes of reading a week
Rasek [7]

Answer:

25 x D = Y

Step-by-step explanation:

Example: Say he reads for three days a week.

25 x 3 = 75

or 6 days

25 x 6 = 150

or 4

25 x 4 = 100

4 0
3 years ago
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