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mezya [45]
3 years ago
9

The side lengths of a triangle are 9, 12, and 15. Is this a right triangle?

Mathematics
1 answer:
solmaris [256]3 years ago
8 0

Answer:

yes

Step-by-step explanation:

...

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Add: 6(x + 7) + (x + 3
Dvinal [7]
The answer is
6X+42+x+3
7x+ 45
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3 years ago
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Which correctly describes how the graph of the inequality 5x + 2y = 13 is shaded?
exis [7]

Answer:

The answer is above the solid line.

Step-by-step explanation:

6 0
3 years ago
Ten times the sum of half a number x and 8 is 12.
Diano4ka-milaya [45]

BREAKDOWN

10 times: 10 ×

The sum of: ( ) + ( )

which would be : 10 × ( ) + ( )

half a number: 10 × ( X/2 ) + ( )

and 8: 10 × ( X/2 ) + ( 8 )

is 12 : 10 × ( X/2 + 8 ) = 12

xxxxxxxxxxxxxxxxxxx

SIMPLIFICATION

Multiply ten: 10 X (X/2 + 8) = 12

which equals to: 5x + 80 = 12

bring the like terms together: 5x = 80 - 12

Equals: 5x = 78

Find out X:. x = 78/5

FINAL ANSWER:. X = 15.9

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6 0
3 years ago
The distribution of the test statistic for analysis of variance is the F-distribution. true or false
lubasha [3.4K]

Answer:

True. See explanation below

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".  

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"  

If we assume that we have k groups and on each group from j=1,\dots,k we have k individuals on each group we can define the following formulas of variation:  

SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2  

SS_{between=Treatment}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2  

SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2  

And we have this property  

SST=SS_{between}+SS_{within}  

The degrees of freedom for the numerator on this case is given by df_{num}=k-1 where k represent the number of groups.  

The degrees of freedom for the denominator on this case is given by df_{den}=df_{between}=N-k.  

And the total degrees of freedom would be df=N-1

And the we can find the F statistic F=\frac{MSR}{MSE}

8 0
3 years ago
GIVEAWAY!! QUICK QUESTION!!!
Dmitry [639]

Answer:

<u>-2</u>

Step-by-step explanation:

<u>Given</u> :

  • An example of a coefficient ⇒ '11' in 11kk

<u>Solving</u> :

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  • Therefore, on solving -k - k
  • ⇒ -2k
  • ⇒ <u>-2 is the coefficient</u>
7 0
2 years ago
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