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Effectus [21]
2 years ago
12

Factor completely 2n^2+3n-9

Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
7 0
The answer is
(2n-3)(n+3)

i hope this helps :)
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Gamma rays have the longest wavelength on the electromagnetic spectrum.
Serhud [2]
-- False.  Gamma rays have the shortest wavelengths
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-- A disturbance that transfers energy from place to place
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3 0
3 years ago
Hello please help me! There are 3 questions, I will give brainliest!
Shalnov [3]

Answer:

1) There are 13 students in Jerry's study.

2) There are 39 students in Kathy's study.

3) Jerry's study is more trustworthy!

Step-by-step explanation:

1) Jerry's study is the one with the dot plot.

Now, the number of students is calculated by adding the total number of dots in the plot.

We have a total of 13 dots.

Thus, there are 13 students in Jerry's study.

2) Kathy's study is the one with the histogram.

The total number of students is gotten by adding the corresponding number of students on the y-axis for each range of distance on the x-axis.

Total number of students = 9 + 11 + 7 + 12 = 39 students

3) Jerry's study where he used a dot plot is likely to be more trustworthy because it gives exact values of the number of students for each distance represented whereas, Kathy's study where she used a histogram doesn't give exact values but just gives a range of distances for a particular number of people.

4 0
3 years ago
Two points A and B on a plan represent two localities 12 m apart. Given that the segment AB is 6cn long, find the scale used to
natka813 [3]

Answer:

The scale is 1:200

Step-by-step explanation:

On the plan we have the drawing as 6 cm

In real representation, we have the distance as 12 m

Firstly we have to convert to same unit

In this case, we use the cm for convenience

Mathematically, 100 cm is 1 m

Thus, 12 m

will be 12 * 100 = 1,200 cm

So, we have the ratio as;

6 cm : 1,200 cm

and that is 1:200 (since 6/1200 = 1/200 and in ratio form, we have that as 1:200)

7 0
3 years ago
If you could help me with this one also !!!
Irina-Kira [14]
The first one is correct I think.
6 0
3 years ago
Read 2 more answers
Which of the following are in the correct order from least to greatest?
Cloud [144]
The first option because turn them all into degrees and it says:
54, 60, 90, 120, 255
7 0
2 years ago
Read 2 more answers
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