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vodomira [7]
3 years ago
6

Use the discriminant to describe the roots of each equation. then select the best description. x^2 - 5x + 7 = 0

Mathematics
1 answer:
Katen [24]3 years ago
5 0
A. Double root please mark brainliest <3
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Some people took part in a game. The frequency shows information about their scores.
Marizza181 [45]

Answer:

The mean = 17.54

Step-by-step explanation:

Form a table as below;

<u>Interval         Frequency{f}      Midpoint of frequency{x}          fx    </u>

1-7                    19                         4                                            76

8-10                  14                         9                                            126

11-15                  15                         13                                           195

16-20                20                        18                                           360

21-35                 10                        28                                          280

36-50                13                         43                                          559

Sum                   91                                                                        1596

The mean  of grouped data = Sum of { Interval Midpoint * Frequency } /Sum of frequency

The mean= 1596 / 91

The mean = 17.54

5 0
3 years ago
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Writing, reading comprehension
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3 years ago
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4. What is the solution to r/-3 = 12?
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Es c porque lo divides
4 0
1 year ago
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6 0
3 years ago
RS bisects TU at Q. If TQ=5k-9 and QU=15-x
snow_lady [41]

Answer:

x = 4, TU = 22

Step-by-step explanation:

Given that TS bisects TU at Q , then

TQ = QU , substitute values

5x - 9 = 15 - x ( add x to both sides )

6x - 9 = 15 ( add 9 to both sides )

6x = 24 ( divide both sides by 6 )

x = 4

Thus

TU = 5x - 9 + 15 - x = 4x + 6 = 4(4) + 6 = 16 + 6 = 22

4 0
3 years ago
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