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beks73 [17]
4 years ago
15

An elevator moves at the constant speed of 2 m/s for most of its journey. Estimate the time to travel up a 12-story building in

this elevator.
Mathematics
1 answer:
True [87]4 years ago
7 0

Answer:

21 seconds

Step-by-step explanation:

Let us assume each story is 3.5 meters. If the building is 12 stories tall, then the elevator needs to travel 3.5*12=42 meters. Using the formula Distance = Speed * time, we get 42 = 2 *t, so t = 21 seconds.

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Step-by-step explanation:

17

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The perimeter of a rectangle is 152ft. the width is 28 ft shorter than the length. what are the dimensions
Ira Lisetskai [31]
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8 0
3 years ago
A simple random sample of size n = 20 is obtained from a population with population mean 64 and population standard deviation 17
eimsori [14]

Answer:

Kindly check explanation

0.57691

0.4719

Step-by-step explanation

A.) The distribution of sample means must follow a normal distribution ;

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N(64 ~ 17)

Given that:

mean (m) = 64

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Standard deviation (s) = 17

Find

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Zscore = 0.1941176

P(Z < 0.194) = 0.57691 (Z probability calculator)

(c) Find P(x > 65.2).

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Zscore = 0.0705882

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5 0
3 years ago
At the beginning of a drawing class, the instructor suggests that an illusion of depth may be created in a two-dimensional pictu
JulsSmile [24]

Answer:

Your instructor is making reference to a monocular depth cue known as: Linear perspective.  

Step-by-step explanation:

Your instructor is making reference to a monocular depth cue known as: Linear perspective.  

We know that is: Linear perspective, a system of creating an illusion of depth on a flat surface. All parallel lines in a painting or drawing using this system converge in a single vanishing point on the composition’s horizon line.

5 0
4 years ago
A circle is defined by the equation given below.
Feliz [49]
Hello
<span>x² + y² - x - 2y - 11/4 = 0 
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(x-0.5)² +(y-1)² = (1/4)+1+(11/4)
                        = </span> (1/4)+(4/4)+(11/4)
(x-0.5)² +(y-1)² =4²
Answer D the center of the circle is : A (1/2, 1),<span>the length of the radius</span> 2 units
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3 years ago
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