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Irina18 [472]
3 years ago
6

In a random sample of 75 individuals, it was found that 52 of them prefer coffee to tea. What is the margin of error for the tru

e proportion of all individuals who prefer coffee?
Mathematics
1 answer:
Ugo [173]3 years ago
4 0
0.106 is the answer

letters till 20 characters
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DIA [1.3K]

Answer:

  • cos (x) cos (2x) - 2sin(x) sin(2x)

Solution:

(See the solution in the photo)

8 0
2 years ago
Read 2 more answers
A cone with diameter 20 cm and a height of 20 cm. Find the volume of the cone rounded to the nearest tenth.
zhuklara [117]

Answer:

2094.4 cm³

Step-by-step explanation:

The volume of a cone =πr²h/3

Where

r = radius = Diameter/2

Diameter = 20cm, radius = 20cm/2 = 10cm

Height = 20cm

Volume of a cone = π × 10² × 20/3

Volume of a cone = 2094.3951 cm³

Approximately to the nearest tenth = 2094.4 cm³

Therefore , the volume of a cone = 2094.4 cm³

8 0
3 years ago
Maria releases a javelin 1.5 meters above the ground with an initial vertical velocity of 22 meters per second. How long will it
Korolek [52]
The javelin will hit the ground 14.66 or 15 seconds upon Maria's release from the said distance. The computation are as follows: 

time = distance/speed (d/m)
time = 22 meters/second / 1.5 meters 
time = 14.66 seconds or 15 seconds 
3 0
3 years ago
Write a coordinate proof given quadrilateral ABCD with vertices A (3, 2), B (8, 2), C (5, 0), and D (0, 0).
EleoNora [17]

Answer:

Step-by-step explanation:

There is really no way to show that of I know of without drawing it but here is this. I hope this helps and not really exact on position but that is very close.

4 0
3 years ago
A ball is launched from a 682.276 meter tall platform. the equation for the ball's height h at time t seconds after launch is h(
blagie [28]

The maximum height the ball achieves before landing is 682.276 meters at t = 0.

<h3>What are maxima and minima?</h3>

Maxima and minima of a function are the extreme within the range, in other words, the maximum value of a function at a certain point is called maxima and the minimum value of a function at a certain point is called minima.

We have a function:

h(t) = -4.9t² + 682.276

Which represents the ball's height h at time t seconds.

To find the maximum height first find the first derivative of the function and equate it to zero

h'(t) = -9.8t = 0

t = 0

Find second derivative:

h''(t) = -9.8

At t = 0; h''(0) < 0 which means at t = 0 the function will be maximum.

Maximum height at t = 0:

h(0) = 682.276 meters

Thus, the maximum height the ball achieves before landing is 682.276 meters at t = 0.

Learn more about the maxima and minima here:

brainly.com/question/6422517

#SPJ1

4 0
2 years ago
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