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3 years ago

11

there are 153 people in line for a ride at an amusement park the ride can take 40 people at a time how many times will the ride

need to run so that every person in the lines gets a turn?

1 answer:

krek1111 [17]3 years ago

8 0

Answer:

Step-by-step explanation:

we need to divide

153/40=3.825

the ride needs to run 4 times

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There are 4 pints of green paint in a gallon bucket. The paint is made from equal amounts of yellow paint and blue paint. To cre

vovikov84 [41]

Answer:

Brandon is correct.

Step-by-step explanation:

Initially, there id 4 pints of green paint in the bucket.

As the green paint is made from equal amounts of yellow paint and blue paint, so, the initial amount of yellow and blue paint in the bucket is 2 pint each.

Let x pints of yellow paint to be added to the bucket to make the desired shade.

Total amount of the paint in the bucket, after addition of $x$ pints of yellow color become $4 + x$ pint, in which the ampunt of yellow color is $2+x$ pints.

As, the ampunt of yellow color is 80% of the total amount of the mixture, so

$(4+x)\times 80\%=2+x$

$\Rightarrow (4+x)\times \frac{80}{100}=2+x$

$\Rightarrow 4(4+x)=5(2+x)$

$\Rightarrow x=6$

So, 6 pints of yellow paint to be added to the bucket to make the desired shade.

Hence, Brandon is correct.

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3 years ago

Ruth Ann wants to research two different careers, medical doctor and astronaut.

elixir [45]

Answer: visit the US Bureau of Labor Statistics website to find information on both careers

The career section

hope this helped :)

Step-by-step explanation: there is none

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3 years ago

Read 2 more answers

You throw a ball up and its height h can be tracked using the equation h=2x^2-12x+20.

postnew [5]

<em><u>This problem seems to be wrong because no minimum point was found and no point of landing exists</u></em>

Answer:

1) There is no maximum height

2) The ball will never land

Step-by-step explanation:

<u>Derivatives</u>

Sometimes we need to find the maximum or minimum value of a function in a given interval. The derivative is a very handy tool for this task. We only have to compute the first derivative f' and have it equal to 0. That will give us the critical points.

Then, compute the second derivative f'' and evaluate the critical points in there. The criteria establish that

If f''(a) is positive, then x=a is a minimum

If f''(a) is negative, then x=a is a maximum

1)

The function provided in the question is

$h(x)=2x^2-12x+20$

Let's find the first derivative

$h'(x)=4x-12$

solving h'=0:

$4x-12=0$

x=3

Computing h''

h''(x)=4

It means that no matter the value of x, the second derivative is always positive, so x=3 is a minimum. The function doesn't have a local maximum or the ball will never reach a maximum height

2)

To find when will the ball land, we set h=0

$2x^2-12x+20=0$

Simplifying by 2

$x^2-6x+10=0$

Completing squares

$x^2-6x+9+10-9=0$

Factoring and rearranging

$(x-3)^2=-1$

There is no real value of x to solve the above equation, so the ball will never land.

This problem seems to be wrong because no minimum point was found and no point of landing exists

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3 years ago

Suppose a researcher is interested in understanding the variation in the price of store brand milk. A random sample of 36 grocer

liberstina [14]

Answer: ($3.055, $3.205)

Step-by-step explanation:

Given : Significance level : $\alpha: 1-0.95=0.5$

Critical value : $z_{\alpha/2}=1.96$

Sample size : n= 36

Sample mean : $\overline{x}=\$\ 3.13$

Standard deviation : $\sigma= \$\ 0.23$

The confidence interval for population mean is given by :_

$\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$\text{i.e. }\$\ 3.13\pm (1.96)\dfrac{0.23}{\sqrt{36}}\\\\\approx\$\ 3.13\pm0.075\\\\=(\$\ 3.13-0.075,\$\ 3.13+0.075)=(\$\ 3.055,\$\ 3.205)$

Hence, the 95% confidence interval to estimate the population mean = ($3.055, $3.205)

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3 years ago

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Answer:

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