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3 years ago

Will someone please help me out with this problem I don’t remember how to do these

Mathematics

1 answer:

forsale [732]3 years ago

3 0

First, we get the area of the whole rectangle, easy enough:

18 * 16 = 288 cm²

Now, for the area of the circle, we use the circle area formula:

Area = pi * r²

Area = 3.14 * 6² = 3.14 * 36 = 113.04cm²

Now we substract the circle area from the rectangle area:

Shaded region = 288 - 113.04 = 174.96cm²

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A researcher compares differences in positivity between participants in a low-, middle-, or upper-middle-class family. If she ob

777dan777 [17]

Answer:

(2, 12)

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 $3$ groups and on each group from $j=1,\dots,n_j$ 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

$SST=SS_{between}+SS_{within}$

The degrees of freedom for the numerator on this case is given by $df_{num}=k-1=3-1=2$ where k =3 represent the number of groups.

The degrees of freedom for the denominator on this case is given by $df_{den}=df_{between}=N-K=15-3=12$ .

And the total degrees of freedom would be $df=N-1=15 -1 =14$

And the correct answer would be 2 degrees of freedom for the numerator and 12 for the denominator

(2, 12)

3 0

3 years ago

I need to know what the answer is the question is Josie bikes 40 miles each months for five months she multiplies 40×5 what unit

sleet_krkn [62]

The product would be 200 obliviously it would be miles because it says five months so it’s implying that you need to find the amount biked in 5 months

So it’s should be miles

3 0

2 years ago

A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only

Neporo4naja [7]

Idk maybe it's is 10x32/20=60

5 0

3 years ago

28 divided by 7 2 x 3 =

gregori [183]

I think the Answer is 24.

3 0

3 years ago