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horsena [70]
3 years ago
10

The set of life spans of an appliance is normally distributed with a mean

Mathematics
2 answers:
qaws [65]3 years ago
8 0

Answer:

24 months

Step-by-step explanation:

HACTEHA [7]3 years ago
5 0

Answer:

24 months

Step-by-step explanation:

Lifespan with z-score of -3 in the the set of normally distributed life spans of an appliance can be calculated using the equation:

z=\frac{X-M}{s} where

  • X  is the lifespan we are looking for
  • M is the mean life span of the appliance (48 months)
  • s is the standard deviation of the distribution of the life spans (8 months)

We have -3=\frac{X-48}{8}  that is

-24=X-48 and

X=24 months.

The life span of an appliance that has a z-score of -3 is 24 months.

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tresset_1 [31]
Fraction: 3/10

percent: 0.3%
5 0
3 years ago
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The raised vegetable garden in Susan's yard is in the shape of a rectangular prism with a volume of 48 cubic feet and a height o
Anna11 [10]
The correct question is
The raised vegetable garden in Susan's yard is in the shape of a rectangular prism with a volume of 48 cubic feet and a height of 3/4 foot. <span>The base of the rectangular prism is not a square and the width is greater than 2 feet. What is the length and width of the rectangular prism?

let
x-------> the length of the base of the rectangular prism
</span>y-------> the width of the base of the rectangular prism
<span>
we know that
volume of the prism=area of the base*height 
volume=48 ft</span>³
<span>height of the prism=3/4 ft

area of the base=volume/height--------> 48/(3/4)---> 48*4/3----> 64 ft</span>²
<span>
area of the base=64 ft</span>²
<span>area of the base=x*y
64=x*y--------> equation 1

y=x+2--------> equation 2

substitute equation 2 in equation 1
64=x*[x+2]-----> 64=x</span>²+2x------> x²+2x-64=0
<span>
using a graph tool----> to resolve the second order equation
see the attached figure

the solution is
x=7.062 ft
y=x+2-----> y=7.062+2-----> y=9.062 ft

the answer is
</span>the length of the base of the rectangular prism is 7.062 ft
the width of the base of the rectangular prism is 9.062 ft<span>
 </span>

4 0
3 years ago
What is the word phrase for 5x+2
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                      or
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3 years ago
Matt, a 180 pound (82 kg) male, goes to a party and is served beer in a 16-ounce (473 ml) red plastic cup. he has 3 cups of beer
goblinko [34]

4 Standard drinks he has consumed in over a two - hour time period.

<h3>What is Unitary Method?</h3>

The unitary method is a method in which you find the value of a unit and then the value of a required number of units.

For example: 5 cars have price of $500. what will be the price of 10 cars.

Now, we know

5 cars → $500

1 car → $500/5

1 car → $100

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The standard drink contains 12 - ounce of beer.

Here, we have given 1 red cup which has 16 - ounce of beer.

He has 3 red cups.

So, total ounce of beer he has consumed in two hour time period:

16 x 3 = 48 ounce of beer.

Now, as we know standard drink contains 12 - ounce of beer.

so, Number of standard drink = 48/12 = 4

Hence, 4 Standard drinks he has consumed in over a two - hour time period.

Learn more about " Unitary Method " from here: brainly.com/question/28276953

#SPJ4

7 0
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What is the name for the total area of the surface of a solid?prism area net area surface area facial area
ivolga24 [154]

Answer:

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Step-by-step explanation:

You are calculating the measurements for the surface of the prism. The interior is volume.

4 0
3 years ago
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