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choli [55]
3 years ago
13

Triangle ABC is rotated 45° counterclockwise about vertex A to obtain triangle XYZ. If the m∠ABC is equal to 30°, what is the m∠

XYZ?
15°


30°


45°


75°
Mathematics
2 answers:
Kipish [7]3 years ago
6 0

Answer:

B-30º

Step-by-step explanation:

Mrrafil [7]3 years ago
5 0

Answer:

i think 30

Step-by-step explanation:

the best choice

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Step-by-step explanation:

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Please help me with this, I only have a few more questions and I'll be posting them on my page for help
Irina18 [472]

Answer:

B) 450

Step-by-step explanation:

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2 years ago
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cricket20 [7]
The answer is: 8,295.4
5 0
3 years ago
Read 2 more answers
As notas de dois alunos X e Y estão representadas no quadro abaixo. Por meio da variância, qual deles apresentou ser o mais regu
Reil [10]

Answer:

Aluno X

Step-by-step explanation:

A nota média para os alunos X e Y são, respectivamente:

X_m=\frac{5+3+5+7}{4}=5 \\Y_m=\frac{4+9+4+3}{4}=5

A variância é definida pela seguinte expressão:

V=\frac{\sum(X_i-X_m)^2}{n-1}

Onde n é o numero de termos, neste caso, n = 4.

As variâncias para cada aluno são:

V_x=\frac{(5-5)^2+(3-5)^2+(5-5)^2+(7-5)^2}{4-1} \\V_x= 2.7\\V_y=\frac{(4-5)^2+(9-5)^2+(4-5)^2+(3-5)^2}{4-1} \\V_y= 7.3

O aluno X apresentou uma variância menor do que o aluno Y em suas notas e, portanto, apresentou ser o mais regular.

6 0
2 years ago
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