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viktelen [127]
3 years ago
15

-7m - 4m + 2 + 5 = 7 - 3m - 8m

Mathematics
1 answer:
slava [35]3 years ago
3 0

Answer:

Infinitely Many Solutions

Step-by-step explanation:

Simplify

−11m+7=7−3m−8m

Simplify

−11m+7=7−11m

Since both sides equal, there are infinitely many solutions.

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Jose has 7 used stamps for every 4 new stamps. If he has 28 new stamps, how many used stamps does he have?
kipiarov [429]

Answer:

21

Step-by-step explanation:

8 0
2 years ago
Deidre is picking out some movies to rent, and she is primarily interested in documentaries and children's movies. She has narro
exis [7]

Answer: 6630

Step-by-step explanation:

Given , Number of documentaries = 17

Number of children's movies = 20

Total movies = 17+20=37

Number of combinations of r things taken out of things = ^nC_r=\dfrac{n!}{r!(n-r)!}

Now, the number of different combinations of 3 movies can she rent if she wants at least one documentary

= (1 documentary+2 children's movies  , 2 documentary+1 children's movies , 3 documentary+0 children's movies)

=^{17}C_1\times^{20}C_{2}+^{17}C_2\times^{20}C_{1}+^{17}C_3\times^{20}C_{0}

=(17)\times\dfrac{20!}{2!18!}+\dfrac{17!}{2!15!}\times(20)+\dfrac{17!}{3!14!}(1)\\\\=3230+2720+680=6630

Hence, the  number of different combinations of 3 movies can she rent if she wants at least one documentary is 6630 .

3 0
3 years ago
Morton and Lyndal invested together in a new venture. Lyndal invested $500 more than Morton. If they invested $5000 together, ho
Kaylis [27]
Lyndal invested $3000 and Morton invested $2000
8 0
2 years ago
1. A house cost $112,000 in 2010. By the year 2015, the house had a value of $132,000. What was the growth rate as a percent for
jonny [76]

Answer:

The growth rate for the period was of 17.86%.

Step-by-step explanation:

To find the growth rate as a percent, we multiply the change by 100, and divide by the initial value.

A house cost $112,000 in 2010. By the year 2015, the house had a value of $132,000.

Change: 132 - 112 = 20

Initial value: 112

Growth rate as a percent:

20*100/112 = 17.86%

The growth rate for the period was of 17.86%.

4 0
3 years ago
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Which equation has a unit rate greater than the unit rate of the relationship shown in the graph?
shusha [124]
The graph shows a slope 7/10, which is 0.7. Only 8/11 (=0.72727) is greater than 0.7, so the answer is y=(8/11)x
7 0
3 years ago
Read 2 more answers
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