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kykrilka [37]
3 years ago
7

An "A" train leaves a subway station every 12 minutes. An "E" train leaves every 9 minutes. If both trains just left the station

on parallel tracks, when will both leave the station together again?
A. 108 minutes
B. 36 minutes
C. 72 minutes
D. 24 minutes
Mathematics
2 answers:
nexus9112 [7]3 years ago
7 0
It would be B. 36 minutes.
Alenkinab [10]3 years ago
5 0
<span>A. 108 minutes hope i helped

</span>
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sweet-ann [11.9K]
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Transform the given quadratic function into vertex form f(x) = quadratic function into vertex form f(x) = quadratic function int
melisa1 [442]

Answer:

Vertex form: f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}

The vertex is (-\frac{7}{2},-\frac{53}{4})

Step-by-step explanation:

For a general quadratic function the form is:

ax ^ 2 + bx + c

For the function

f(x) = x ^ 2+ 7x -1

The values of the coefficients for the function are the following: a = 1, b =7, c = -1

Take the value of b and divide it by 2. Then, the result obtained squares it.

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Add and subtract \frac{49}{4}

f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1

Write the expression of the form

f(x) = (x+\frac{b}{2})^2 +k

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6 0
3 years ago
The weight of an object on the moon varies directly as its weight on Earth. With all of his gear on, Neil Armstrong weighed 360
babymother [125]

amistre64 Medals 0
e = k.m
360 = k.60
k = 360/60 = 36/6 = 6
108 = 6.m
108/6 = m = 18 
8 0
3 years ago
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