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Aliun [14]
3 years ago
5

Need help on this !!!!!

Mathematics
1 answer:
Arisa [49]3 years ago
4 0

Answer:

17

Step-by-step explanation:

Remark

In this formation, the chords cut each other so that

Equation

(3x - 1) * 3 = 12*(x -2)        Remove the brackets.

Solution

9x - 3 = 12x - 24                       Add 24 to both sides.

9x - 3 + 24 = 12x - 24 + 24      Combine

9x + 21 = 12x                            Subtract 9x from both sides

9x - 9x +21 = 12x - 9x

21 = 3x                                     Divide by 3

21/2 = 3x/3              

7 = x

Find QR

QR = 12 + x - 2

QR = 10 + 7

QR = 17

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How many solutions does the equation have? 0=3x^2-5x-5
ratelena [41]

Answer:

2 real solutions

Step-by-step explanation:

Since the degree of the polynomial is 2, then there are 2 solutions for the equation, but we don't know if they are both complex or both real.

Since the discriminant is b^2-4ac=(-5)^2-4(3)(-5)=25+60=85 > 0, then there are 2 real solutions.

6 0
3 years ago
An independent-measures study has one sample with n = 6 and a second sample with n = 8 to compare two experimental treatments. w
kifflom [539]

The df value for the t statistic for this study is 12.

To calculate the df value or degree of freedom we have to learn about test-statistic.

<h3>What is t statistics and how is it related to df(degree of freedom)?</h3>

In the field of statistics , T-statistic is the ratio of the estimated value of the perimeter to its standard error. Degree of freedom or df value denotes the number of data (from a sample) is used to calculate the estimate .

Importantly the degree of freedom is different from the sample space of an experiment.

The formula for calculating the df of a function is given by

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So in the given question, N1=6 and N2=8

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3 0
2 years ago
Help me out on this please I sent an image down below
abruzzese [7]
60 degrees because vertical angles are congruent if you move line y 5 degrees clockwise then you are adding 5+55=60 and since 1 and 3are congruent 3=60 degrees
3 0
3 years ago
Solve the system using the substitution method. y = -5x – 13 6x + 6y = -6 please help me NO LINKS!
lana [24]

Answer:

Step-by-step explanation:

y=-5x-13

Since we know the value of y we can substitute it in

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3 0
3 years ago
Is 2/6 simplest form or not
s2008m [1.1K]
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7 0
3 years ago
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