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alex41 [277]
3 years ago
6

What is the difference of the two polynomials? (7y2 + 6xy) - (-2xy + 3)

Mathematics
2 answers:
zysi [14]3 years ago
7 0

Answer:

A On Edge

Step-by-step explanation:

Masja [62]3 years ago
3 0

Answer:

  7y^2 +8xy -3

Step-by-step explanation:

Distribute the minus sign and combine like terms.

  = 7y^2 +6xy +2xy -3

  = 7y^2 +8xy -3

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Eva makes a few dozen cupcakes and sells them for $8 a dozen. Which function represents the relationship between the money Eva e
Romashka [77]
We let c represent the number of dozen cupcakes in which the problem says that the cost of each cupcake is $8 per dozen. In this case, the money earned by Eva should be a function of the number of dozen cupcakes. In this case, the expression that represents this is  A. f(c) = c × 8
4 0
3 years ago
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
(1)
Agata [3.3K]

<u>We know that,</u>

slope = \rm{\frac{(y2 - y1)}{(x2 - x1)} }

Let (0,1)=(x 1 ,y 1 ) and (1,2)=(x 2,y 2 )

So,

Slope of line = \frac{(2 - 1)}{(1 - 0)}  = 1

Now,

The required line equaqtion is given by,

==> y−y 1 = m(x-x1)

==> y−1=1(x−0)

==> y−1=x

==> y=x+1

6 0
2 years ago
Please help, I will mark brainliest if correct.
nadezda [96]

Answer:

100

Step-by-step explanation:

something about them being diagnol to each other makes them equal

havent done geometry in a while lol

hope this helps <3

5 0
3 years ago
Read 2 more answers
36 cans of soda coast $8.90 how much does 12 cans cost
maw [93]
So first u gotta to 36 divide by 12 so it’s = 3 and now u gotta to 8.90 divide by 3 and it’s = $ 2.96
3 0
3 years ago
Read 2 more answers
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