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2 years ago

Please hurry not much more time answer even if its too late somebody else can use the answer.

Mathematics

2 answers:

alexgriva [62]2 years ago

7 0

The table of the relative frequencies show that <u>70% of 8th graders</u> want the water slides.

There is an association between grade level and field trip choice with the higher grades preferring Water slides more than roller skating.

9th graders would prefer waterslides if the trend continues.

<h3>What does the frequency table show?</h3>

The percentage of 8th graders who want to go to water slides is:

= 0.14 / 0.20 x 100%

= 70%

As the grades increase, less people want to go roller skating which means that should this trend continue, 9th graders would prefer water slides.

Find out more on relative frequency tables at brainly.com/question/1809498.

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gulaghasi [49]2 years ago

5 0

Answer:

See below

Step-by-step explanation:

From the table:

a) roller skating is 54 percent.....slides is only 46 percent

b) 8 th graders who want water slide = .14 / ( .14 + .06) = 70 percent

c) yes higher grade, higher want water slide

d) water slides ( see answer c )

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King Kong stands on the edge of the roof of a 62 foot high building. You poke your head out of a manhole and measure the angles

Oliga [24]

Answer:

46.55 feet (approx).

4.48 feet ( approx )

Step-by-step explanation:

Let x be distance manhole from the building. ( in feet ) and y be the height of the King Kong.

∵ The angles of elevation to the top of King Kong's head and to his feet are 55 degrees and 53.1 degrees respectively.

By the trigonometric ratio,

$\tan 53.1^{\circ}=\frac{62}{y}$

$\implies y =\frac{62}{\tan 53.1^{\circ}}\approx 46.55$

Thus, the distance of the manhole from the building would be 46.55 feet (approx).

Again by the trigonometric ratio,

$\tan 55^{\circ}=\frac{62+x}{46.55}$

$\tan 55^{\circ}\times 46.55=62 + x$

$66.48 = 62 + x$

$\implies x = 66.48 - 62 = 4.48$

Hence, King Kong is approximately 4.48 feet long.

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3 years ago

Don’t understand someone explain please

makvit [3.9K]

Answer:

Sin A = 11/61

Step-by-step explanation:

Reference angle (θ) = A

opp = 11

Hyp = 61

Adj = 60

Sin θ = opp/hyp

Sin A = 11/61

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3 years ago

What is the square root of 124 rounded to the nearest hundredths?

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The actual square root of 124 is 11.1355287257. Rounded to the nearest hundredth would be 11.14

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3 years ago

assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury and the standard deviation is

julia-pushkina [17]

Given M = 120, σ = 5.6

P (117.4 <x<120)

P (" 117.4-120 5.6 < X-M 120-120 5.6

P(-0.46 < 220)

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0.1788

The standard deviation is 0.1788

Standards contain technical specifications or other precise criteria intended to be used consistently as rules, guidelines, or definitions. They make life easier and help increase the reliability and effectiveness of many of the products and services we use. . Most state regulations require drivers to have liability insurance and stipulate the exact amount of coverage required.

Standard definitions are established as a basis for rules, examples, or comparisons. An example of a standard is a policy governing what 7th graders must learn. An example of a standard is music that has been played many times over the years.

Learn more about standards here

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2 years ago

Suppose that time spent on hold per call with customer service at a large telecom company is normally distributed with a mean µ

lana66690 [7]

Answer:

0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 8 minutes

Standard Deviation, σ = 2.5 minutes

Sample size, n = 25

We are given that the distribution of time spent is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

Standard error due to sampling =

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P(sample mean is between 7.8 and 8.2 minutes)

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0.3108 is the probability that the sample mean is between 7.8 and 8.2 minutes.

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4 years ago