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FrozenT [24]
3 years ago
5

Please help me on this two questions please help me before tomorrow

Mathematics
1 answer:
babymother [125]3 years ago
5 0
The second one i believe is D
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Despejar la variable <br> 2x al cuadrado + 15= 113
Rudik [331]

Hola!

x = 7 , x = -7

Explicación:

Comienza restando 15 en cada lado:

2x^{2} + 15 -15=113-15

Usted obtiene:

2x^{2} =98

Ahora divide ambos lados por 2:

\frac{2x^{2} }{2} =\frac{98}{2}

Usted obtiene:

x^{2} =49

Como la ecuación está al cuadrado, tendrás que hacer:

x=\sqrt{f(a)} , x=-\sqrt{f(a)}

que te da: x=\sqrt{49} , x =-\sqrt{49}

Entonces:

\sqrt{49}=7 , -\sqrt{49}  = -7

6 0
3 years ago
If 8 n equals 128, n equals:
vodomira [7]

Answer:

16

Step-by-step explanation:

8 times 16 = 128

7 0
3 years ago
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Y_Kistochka [10]

Answer:

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Step-by-step explanation:

3 0
3 years ago
NO LINKS
Olin [163]

Answer:

y = 3.5X - 6921.2

Step-by-step explanation:

Given the data :

X :

1990

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1994

1996

1996

Y :

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Using an online regression calculator ; the regression model obtained is : y = 3.5X - 6921.2

Where ; slope = 3.5 ; intercept = - 6921.2

7 0
3 years ago
Ms. Terry's class is hosting a fundraising
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You do not have enough information because you need to know how many students are in the class to be able to divide them into 4 equal groups we do know that it has to be a positive integer that can be evenly divided by 4
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4 years ago
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