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3 years ago

10 - 13x - 7 -8x =6 need help

Mathematics

2 answers:

Levart [38]3 years ago

8 0

Answer:

x = - 1/7

Step-by-step explanation:

Simplify:

3 - 21x = 6

Subtract 3 from both sides:

-21x = 6 - 3

Simplify:

-21x = 3

Divide:

x = - 3/21

Simplify the fraction:

x = 1/7

Hope this helps ; )

EleoNora [17]3 years ago

3 0

Answer:

x = -1/7

Step-by-step explanation:

10 - 13x - 7 -8x = 6

3 - 21x= 6

-21x = 6 - 3

-21x = 3

x = -1/7

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3 years ago

In a one-way ANOVA, what is the difference between the among-groups variance MSA and the within-groups variance MSW?

LuckyWell [14K]

Answer:

$MSR=MSA=\frac{SSR}{k-1}$

And $MSE=MSW=\frac{SSE}{N-k}$

The difference is that MSA takes incount the variation between the groups and the grand mean, and the MSW takes in count the variation within groups respect to the mean of each group .

Step-by-step explanation:

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 $j$ groups and on each group from $j=1,\dots,j$ we have $n_j$ 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

$SST=SS_{between}+SS_{within}=6750+8000=14750$

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 $df=N-1$

We can find the $MSR=MSA=\frac{SSR}{k-1}$

And $MSE=MSW=\frac{SSE}{N-k}$

The difference is that MSA takes incount the variation between the groups and the grand mean, and the MSW takes in count the variation within groups respect to the mean of each group .

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

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3 years ago

What is -16 divided by 2

kkurt [141]

Your answer for -16 divided by 2 will be -8, because half of 16 is 8, but you are just in the negative numbers:)! So your answer is -8

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3 years ago

A horse farm is developing a new indoor arena in a rectangular buliding. They want the width of the building to be 3 wide feet a

erastovalidia [21]

Answer:

The area of the building in terms of y in its simplest form is 12(y + 2)

Step-by-step explanation:

Since the area of a rectangle is A = LW where L = length and W = width. From our question, the width of the rectangular building is 3 feet. So, W = 3 feet and its length is 4y + 8 feet. So, L = 4y + 8 feet.

So, the area of the building in terms of y is A = LW

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Factorizing out 4 from the expression, we have

= 4(y + 2) × 3

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So, the area of the building in terms of y in its simplest form is 12(y + 2)

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3 years ago

How many groups of 10 are there in 230?

Ivan

Answer:

Step-by-step explanation:

230/10=23

5 0

2 years ago

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