An instructional video is 1.8 minutes long. How long is the video in seconds? How long is it in hours?

Answers

Answer 1

Answer:

Answer:

108 seconds and 0.03 hours

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John o'sullivan coined the phrase ____ to describe america's right to expand to the pacific ocean
Joe will go to the swimming pool on 20 different days this month. • a one-day pass to the pool is $2.25. • a monthly pass to the pool is $30.00. how much money will joe save by buying a monthly pass
A football coach gives half his players a protein bar to eat before each game; the other players do not receive the protein bar. After a month of games, he analyzes their playing stats. He concludes the protein bar helped improve their performance on the field. How can the coach test the means to be sure the results are not likely to happen by chance?A.He can rerandomize the results by separating the two groups randomly, then calculate the means and the difference of the means. B.He can pick players at random and analyze their playing stats without calculating means. C.He can analyze the two groups by calculating the means and the difference of the means. D.He can pick the players he wants to analyze based on the best stats.
1. Conduct a hypothesis test for the following scenario. SHOW ALL YOUR WORK THE WAY WE DID IN CLASS! Construction zones on highways have a much lower speed limit. To see if drivers obey these lower speed limits, a police officer uses a radar gun to measure the speed in miles per hour of a random sample of 10 drivers in a 30 mph speed zone. Here are the data: 26 28 32 21 27 31 29 22 25 34 Is there convincing evidence at the α = .05 level that the average speed is below the speed limit?
Which of the following is an equivalent simplified expression for 2(4x + 7) – 3(2x – 4) ?A. x + 2 B. 2x + 2 C. 2x + 26 D. 3x + 10 E. 3x + 11 Can anyone explain this one for me?

what is the greatest possible are of a triangle with one side of length 7 and another side of length 10?

Answers

Area of a triangle = $(1)/(2) (a)(b)sin(C)$ .

a=7
b=10

The largest possible value for sin(C) is 1, which is sin(90)

So area = $(1)/(2) (7)(10)sin(90) = (1)/(2) (7)(10)(1) =35$

HELP PLEASE !!!!!!!!!!!!A ﬂorist has to order roses and carnations for Valentine’s day. The ﬂorist needs to decide how many dozen roses and carnations should be ordered to obtain a maximum proﬁt.

• Roses: The ﬂorist’s cost is $20 per dozen;
the proﬁt over cost is $20 per dozen.
• Carnations: The ﬂorist’s cost is $5 per
dozen; the proﬁt over cost is $8.
• The ﬂorist can order no more than 50 dozen
ﬂowers.
• A minimum of 30 dozen carnations must be
ordered.
• The ﬂorist cannot order more than $660
worth of roses and carnations.

A.) How many dozen roses should the ﬂorist order? Answer in units of doz

B.) How many dozen carnations should the ﬂorist order? Answer in units of doz

Answers

30 dozen carnations.
20 dozen roses.
This means she spends 550, but makes 640.
I hope this is right?

A dart hits the small circular target shown below at a random point. Find the probability that the dart lands in the shaded circular region. The radius of the target is 8 cm, and the radius of the shaded region is 3 cm.Use the value 3.14 for π. Round your answer to the nearest hundredth.

Answers

Answer: The probability is P = 0.14

Step-by-step explanation:

We know that the dart will land on the larger circle, then we have a 100% of probability that the dart will land on the larger circle.

Then the probability of the dart landing on the smaller circle will be equal to the quotient between the areas of the smaller circle and the larger circle.

The area of a circle of radius R is:

A = 3.14*R^2

Then the area of the larger circle is:

A = 3.14*(8cm)^2 = 200.96 cm^2

And the area of the smallest circle is:

a = 3.14*(3cm)^2 = 28.26 cm^2

Then the probability of the dart landing on the shaded region is:

P = (28.26 cm^2)/(200.96 cm^2) = 0.14

A real estate agent is working for a developer who claims that the average commute time to downtown is 20 minutes with a standard deviation of 7 minutes. Stephon is an independent real estate agent and wants to check the times for his client. He took a random sample of 15 commute times and found an average of 26 minutes. He did hypothesis testing using a significance level of 5%. Which conclusion could he make?

Answers

To calculate the z-statistic, we must first calculate the standard error.

Standard error is standard deviation divided by the square root of the population. In this case, it is equal to 1.81.

The z-score is defined the distance from the sample to the population mean in units of standard error.

z = (26 – 20)/1.81 = 3.31

at this z-score = 0.0005 which is less than 5%

the answer is C. the z- statistic is 3.32, so the null hypothesis should be rejected.

How many ways are there to distribute three different teddy bears and nine identical lollipops to four children (a) Without restriction? (b) With no child getting two or more teddy bears? (c) With each child getting three ""goodies""?