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nydimaria [60]
3 years ago
15

Annabelle’s bicycle has a wheel radius of 13 inches. She places a sticker on the wheel so that its minimum height above the grou

nd is 0.5 inches. When she rides her bicycle, the wheel completes 90 revolutions every minute. The sticker begins at its minimum height above the ground. Which equation models the height in inches of the sticker after x minutes?
Mathematics
2 answers:
faltersainse [42]3 years ago
7 0

Answer:

The answer is D on edgen

Step-by-step explanation:

BartSMP [9]3 years ago
6 0

Answer:

it is D

Step-by-step explanation:

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Cameron is a member of a national gardening club. she asked 200 of her fellow members whether they use compost to fertilize thei
krok68 [10]

Using the z-distribution, it is found that the 90% confidence interval for the true proportion of club members who use compost is (0.392, 0.508).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 90% confidence level, hence\alpha = 0.9, z is the value of Z that has a p-value of \frac{1+0.9}{2} = 0.95, so the critical value is z = 1.645.

The estimate and the sample size are given by:

\pi = 0.45, n = 200

Hence, the bounds of the interval are:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 - 1.645\sqrt{\frac{0.45(0.55)}{200}} = 0.392

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.45 + 1.645\sqrt{\frac{0.45(0.55)}{200}} = 0.508

More can be learned about the z-distribution at  brainly.com/question/25890103

#SPJ4

4 0
2 years ago
Read 2 more answers
Can i get help on these
JulsSmile [24]

Answer:

a) \frac{32}{21}

b) -14

c) -3

d) -96

Step-by-step explanation:

a) The parenthesis indicate multiplication.

b) Minus and plus gives subtraction, and the sign you put behind the number is the sign of the largest number you have (in this case it's 21 since we ignore the -)

c) They already have common denominators, all that's left is to do \frac{-7 -2}{3} = \frac{-9}{3} = -3

d) The parenthesis indicate multiplication.

Good luck!

6 0
3 years ago
How do you solve 3X+2y=9,for y
AnnyKZ [126]

Answer and Explanation:

<em>Solving 3x + 2y = 9 for y gives y = -(3/2)x + (9/2). </em>

5 0
3 years ago
$453 with a sales tax of 6%
ratelena [41]

Answer:

480.18

Step-by-step explanation:

453+6%

Youre welcome

4 0
3 years ago
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Can someone help pls
lora16 [44]

I got 7.1 x 10^(-11) but it's been a few years so I could've done it wrong

5 0
4 years ago
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