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EleoNora [17]
2 years ago
5

A student claims that x=3 and 2+3i are the zeros of a quadratic function. Explain why this is incorrect

Mathematics
1 answer:
Mandarinka [93]2 years ago
8 0

Answer:

Because it's not a quadratic function.

Step-by-step explanation:

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If any one could please help
yKpoI14uk [10]

Answer:

I believe it’s the 3rd option but I’m not completely confident

Step-by-step explanation:

who am I kidding I’m never confident lol

3 0
3 years ago
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2(x+1)+3x=37 *what is x??​
irina1246 [14]

2(x+1)+3x=37

simplifythe left side:

2x +2 +3x = 37

Combine like terms:

5x +2 = 37

Subtract 2 from both sides:

5x = 35

Divide both sides by 5:

x = 7

5 0
3 years ago
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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
HELP!!!what is the measure of the major arc?
Pavel [41]

Answer:

A

Step-by-step explanation:

Measure of major arc=360°-135° (since one circle adds up to 360)

Major arc=225°

4 0
3 years ago
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What degree of rotation about the origin will cause the triangle below to map onto itslef
drek231 [11]

Answer:

360^o

Step-by-step explanation:

Given

The attached plot

Required

Which degree maps the triangle onto itself

The degrees that can map a point, line, or shape onto itself are:

\theta=360,720,1080,1440, 1800, 2160, 2520, 2880, 3240, 3600

i.e. multiples of 360

Looking at the given options

(a)\ 360^o is correct because it can be found in the listed multiples

In other words, it will map point (x,y) to point (x,y)

5 0
2 years ago
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