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polet [3.4K]
3 years ago
13

the length of an instant message conversation is normally distributed with a mean of 2 minutes and a sd of .5 minutes. what is t

he probability that the conversation lasts longer than 3 minutes?
Mathematics
1 answer:
Artist 52 [7]3 years ago
4 0

Answer:

0.0764

Step-by-step explanation:

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A projectile is shot vertically from the ground level. It’s height h, in feet, after t seconds is given by h = 88t - 16t ^2. How
kozerog [31]

Answer:

it will take 5.5 seconds to hit the ground

Step-by-step explanation:

A projectile is shot vertically from the ground level. It’s height h, in feet, after t seconds is given by h = 88t - 16t ^2

When the projectile hits the ground then the height becomes 0

h = 88t - 16t ^2

0 = 88t - 16t ^2

GCF is -8t

0 = 8t(11 - 2t)

now set each factor =0 and solve for t

8t=0, t=0

11-2t=0, t=\frac{11}{2}

So it will take 5.5 seconds to hit the ground

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3 years ago
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5*5=25*3.14=78.5
3*3=9*3.14=28.26
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Please help!! Giving brainliest and extra points! (Click on photo)
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Step-by-step explanation:

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3 years ago
can someone please tell me how to do 2x=3y and 4x-3y=12 using substitution to solve the system of equations.
maw [93]

Answer:

Step-by-step explanation:

you divide the two to the y, which is x=3/2y

then, you simplify the second equation to y, which is -3y= -4x+12

then, you substitute the x=3/2y into the second equation,

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\frac{(x + 2)^{3}}{4} = 27
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(x^{2} + 2)^{3} = 108 
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x \approx \±2.76
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3 years ago
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