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coldgirl [10]
3 years ago
12

What is true when a system of equations has infinitely many solutions?

Mathematics
1 answer:
hjlf3 years ago
4 0
B. The lines coincide
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There are 45 new houses being built in a neighborhood. Last month, 1/3 of them were sold. This month, 1/5 of the remaining house
Makovka662 [10]
45 new houses.....last month 1/3 were sold....
1/3(45) = 45/3 = 15 houses sold last month

this month, 1/5 of the remaining houses were sold...
remaining houses left are (45 - 15) = 30
1/5(30) = 30/5 = 6 houses sold this month

houses left : 45 - 15 - 6 = 45 - 21 = 24 houses remain <==
8 0
3 years ago
Please help me in answers 3 and 5
Mama L [17]
3. The correct answer is 2) 3m² - 6. 
(2m² + 3m - 4) + (m² - 3m - 2)   Given
2m² + m²   These numbers are like terms, because they both end in m².
3m²   Since m² can also be written as 1m², and 2 + 1 = 3, this is the sum of 2m² and m² (1m²).

3m + (-3m)   These numbers are like terms, because they both end in m. -3m is negative because it was being subtracted.
0   Since we're adding a negative, it's the same as subtracting something. 3m - 3m is 0.

-4 + (-2)   These numbers are like terms, because they are both simple integers with no variable. Once again, we're adding a negative because it was being subtracted.
-6   -4 + (-2) is the same as -4 - 2, which is -6. Remember that when you're subtracting from a negative, the number seems to become larger. For instance, 1 - 1 is 0, but -1 - 1 is -2.

3m² - 6   Put all of the terms together. We don't have to write out 0, because 0 is the same as nothing.

5. This one is a bit unclear, but I think that the correct answer is 2) II and IV. The slope formula can be written as y = mx + b, where m is the slope and b is the y-intercept, or the place where the line crosses the y-axis. In this equation, b is 2, which is a positive number, so the y-intercept shifts upward. This means that the answer is either 2 or 3. As for |x - 6|, the way this is written makes the equation somewhat confusing. I believe that the bars are meant as absolute value bars, which, put simply, turn negatives into positives. This means that this part is x + 6, so the line shifts to the right. However, if they were intended as parentheses, the line would shift to the left, because we're subtracting 6 from x. I'm almost certain those were intended as absolute value bars, though, so I think that the answer is 2.

Hope this helps!
4 0
3 years ago
Can someone help me with my hw
zmey [24]

I loved doing these! anyway, the answer in order would be..

2x +2

6x +6

20x +4

20x +30

4x +8

12x +6

9x

5x +15

8x +12

24x +12

and 42x +18

Your welcome ;)



3 0
3 years ago
Help me pleaseeeee!!!
arlik [135]

Answer:

(6, 5) is the answer.

Step-by-step explanation:

The y's intersect at (6, 5)

3 0
3 years ago
A circle has a radius of 26.85 inches.
Vsevolod [243]

Answer:

168.61

Step-by-step explanation:

C=2*Pi*R

C=2*3.14*26.85

C=6.28*26.85

C=168.61

5 0
3 years ago
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