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3 years ago

7

Olivia and 4 friends order 1 Chocco-Brocco bar to share equally, what fraction is the WHOLE Chocco-Brocco bardoes each of the fr

iends get?

1 answer:

Olin [163]3 years ago

4 0

Answer: 1/4

Step-by-step explanation:

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Last year, Tim rode his bike a total of 50 3/8 miles. This year, he rode his bike a total of 258 3/4 miles.

MaRussiya [10]

Idk I’m in middle school I need help

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

Hi, umm pls help<br><br> 1/6(x-5)=1/2(x+6), solve for x <br><br> And can you please explain

Mumz [18]

Answer:

By solving the equation $\frac{1}{6}(x-5)=\frac{1}{2}(x+6)$ we found that $x=\frac{23}{2} \text { or }=11 \frac{1}{2}$

<u>Explanation: </u>

Given equation,

$\frac{1}{6}(x-5)=\frac{1}{2}(x+6)$ to find x

Step: 1 Cross multiply the denominators 2(x-5)=6(x+6)

Step: 2 Open brackets and simplify the term 2x-10=6x+36

Step: 3 Bring x terms on one side and simplify the equation the equation obtained is following,

2x-6x=36+10

-4x=46

$-x=\frac{46}{4}=\frac{23}{2}=11 \frac{1}{2}$

Therefore, we solved x value from the given equation $\frac{1}{6}(x-5)=\frac{1}{2}(x+6)$ as $x=\frac{23}{2} \text { or }=11 \frac{1}{2}$ .

4 0

3 years ago

a different taxi service charges a pickup fee of $4 plus charge of $1.75 per miles driven. Write an equation for this function,

Kazeer [188]

Answer:

Step-by-step explanation:

y = 1.75x + 4.....with x being number of miles and y being total cost

in y = mx + b form, the slope can be found in the m position and the y int can be found in the b position

y = mx + b

y = 1.75x + 4......so ur slope(m) = 1.75 and ur y int(b) = 4 or (0,4)

8 0

3 years ago

How many names does the angle have? What are those names?

BlackZzzverrR [31]

Answer:

3 names of angles.

Step-by-step explanation:

Obtuse,Acute, And Right angle! Hope this helps! :D

*^#Emmy#^*

4 0

2 years ago