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mars1129 [50]
4 years ago
9

PLEASE help me:( i'm desperate (and dumb): factor 2n^(3)+7n^(2)-2n-7

Mathematics
2 answers:
mario62 [17]4 years ago
4 0

x {}^{2}(2x + 7) - (2x + 7) \\ (2x + 7)(x {}^{2}  - 1) \\ (2x + 7)(x - 1)(x + 1)
Murljashka [212]4 years ago
4 0

2n^(3)+7n^(2)-2n-7

factor by grouping

2n^3 -2n  + 7n^2-7

2n(n^2-1) + (7(n^2-1)

factor n^2-1 out

(n^2-1) (2n+7)

factor (n^2-1)

(n-1) (n+1) (2n+7)

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a scatterplot shows: a. the average value of groups of data. b. scores on one variable plotted against scores on a second variab
g100num [7]

Scores on one variable plotted against scores on a second variable.

The correct answer is (b)

Now, According to the question:

Let's know:

<u>A scatterplot shows:</u>

A scatterplot shows the relationship between two quantitative variables measured for the same individuals. The values of one variable appear on the horizontal axis, and the values of the other variable appear on the vertical axis. Each individual in the data appears as a point on the graph.

Hence, The correct answer is (b) i.e.,

Scores on one variable plotted against scores on a second variable.

Given,

In the question:

A scatterplot shows:

a. the average value of groups of data.

b. scores on one variable plotted against scores on a second variable.

c. the frequency with which values appear in the data

d. the proportion of data falling into different categories.

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4 0
1 year ago
Can someone PLEASE PLEASE help me. Thank you.
vesna_86 [32]

Answer:

D

Step-by-step explanation:

Binomial means that it will have two terms, so by process of elemination, we are only left with C and D. Degree would be the power, and D is the only one that has a power of 2.

3 0
3 years ago
What is the answer?
alexgriva [62]

Answer:

Area = (2-3x)(2x+5)(x-1)

       = -6x³-5x²+21x-10

Step-by-step explanation:

6 0
4 years ago
872,847 to the nearest thousand
dedylja [7]
873,000 is your answer
3 0
3 years ago
Read 2 more answers
If DE = 7x + 3 and EF = 9x - 19,<br> then EF = ?
ANEK [815]

Answer:

Step-by-step explanation:

7x + 3 = 9x - 19

-2x + 3 = -19

-2x = -22

x = 11

DE= 7(11) + 3 = 77 + 3 = 80

EF = 9(11) - 19 = 99 - 19 = 80

80 + 80 = 160 for DF

6 0
3 years ago
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