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irinina [24]
3 years ago
14

A machine prints 8 banner in 120 seconds. how many seconds does take to print one banner

Mathematics
2 answers:
maks197457 [2]3 years ago
7 0
\frac{120}{8}\\15 15 seconds-per-banner
g100num [7]3 years ago
3 0
So 8 banneers per 120 seconds
8 is to 120=8/120 or 120/8
120/8
make bottom number 1
divide
120/8=60/4=30/2=15/1=15

15 seconds is the answer
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52% of 1000 registered voters intend to vote for Steven Collins for mayor. Based on a 95% confidence interval, can we assume tha
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Using the z-distribution, it is found that the correct option regarding the question in the problem is given by:

B. No, since the confidence interval includes values less than 50%, his opponent may get more votes.

<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 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

In this problem, the parameters are given as follows:

\pi = 0.52, n = 1000

Hence, the bounds are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.52 - 1.96\sqrt{\frac{0.52(0.48)}{1000}} = 0.489

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.52 + 1.96\sqrt{\frac{0.52(0.48)}{1000}} = 0.551

The lower bound is below 0.5, hence option B is correct.

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

#SPJ1

7 0
2 years ago
Find the area of the figure.<br><br> A) 114 cm2 <br> B) 350 cm2 <br> C) 418 cm2 <br> D) 447 cm2
Roman55 [17]

Answer:

C.) 418 cm²

I hope this helped you : )

Step-by-step explanation:

First, you find the area of the square:

19 cm x 19 cm = 361 cm

Next, you find the area of the triangle:

(19 cm x 6 cm) ÷2 =57 cm

Last, you add the two:

361 cm + 57 cm = 418 cm²

5 0
3 years ago
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Answer:the total trip, and I should be right, was 7 miles. He rowed up for 3 hours, and back for 1.

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4 years ago
The radius of the front wheel of Jordan's bike is 53cm.
sergeinik [125]
For this we start by putting km into cm
53.23 x 100,000 = 5,323,000
Now we divide by 53 to see the total number of revolutions
5,323,000 / 53 = 100,433.962 revolutiona
4 0
3 years ago
Light travels about 180 million kilometers in 10 minutes. How far does it travel in 1 minute ? How far does it travel in 1 secon
daser333 [38]

Answer:18 million and 300000

Step-by-step explanation:

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7 0
4 years ago
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