You mow 3 lawns in 5 hours. How long will it take to mow 9 lawns? Explain your thinking

A coin was flipped 150 times. The results of the experiment are shown in the following table:

Basile [38]

<h2>Answer:</h2>

The statement that best describes the experimental probability of getting heads is:

It is 10% higher than the theoretical probability.

<h2>Step-by-step explanation:</h2>

We know that the theoretical probability of getting head is: 0.5

and the theoretical probability of getting tail is: 0.5

Also, the results of experiments are:

Heads Tails

90 60

This means that the experimental probability of getting head is: 90/150=3/5=0.6

and the experimental probability of getting tail is: 60/150=2/5=0.4

Hence, the experimental and theoretical probability of getting head is not same or equal.

Also, the experimental probability of getting head is more than the theoretical probability of getting head and the percent increase is calculated as:

$(0.6-0.5)\times 100\\\\\\=(0.1)\times 100\\\\=10\%$

8 0

3 years ago

Read 2 more answers

The financial aid office at a nearby university publishes data about the type and amount of aid offered annually by collecting i

Ad libitum [116K]

Answer: incomplete question

Complete question: identify the sampling technique used.

The financial aid office at a nearby university publishes data about the type and amount of aid offered annually by collecting information from every 25th student to apply for financial aid this semester.

Answer: Systematic Sampling

Step-by-step explanation:

Systematic sampling:is easier to do than other sampling techniques. In systematic sampling, a list of elements are "counted off". That is, every nth element is taken. This is similar to lining everyone up and numbering off "4,5,6,7; 4,5,6,7; etc". When done numbering, all people numbered 4 would be used.

3 0

3 years ago

What is the solution to 4(x+2)>8x-3

pogonyaev

Answer:

x < 11/4

Step-by-step explanation:

hope this is right!

8 0

3 years ago

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The equation a = 1/2(b1 + b2)h can be used to determine the area, a, of a trapezoid with height, h, and the base lengths, b1 and

andrew11 [14]

Answer:

2a/b1 +b2=h

And

2a/h -b2=b1

Step-by-step explanation:

8 0

3 years ago

How would I do part A. I showed my work but I'm slightly off

ahrayia [7]

$\bf \stackrel{\textit{perimeter of the rectangle}}{P_{rect}=2x+y}~\hfill \stackrel{\textit{area of the rectangle}}{A_{rect}=xy}
\\\\\\
\stackrel{\textit{perimeter of the semi-circle, with }r=\frac{y}{2}}{P_{semic}=\cfrac{\pi y}{2}}~\hfill \stackrel{\textit{area of the semi-circle with }r=\frac{y}{2}}{A_{semic}=\cfrac{\pi y^2}{8}}
\\\\[-0.35em]
\rule{34em}{0.25pt}$

$\bf \stackrel{\textit{perimeter of the enclosure}}{60=2x+y+\cfrac{\pi y}{2}}\implies \stackrel{\textit{multiplying by 2}}{120=4x+2y+\pi y}
\\\\\\
120-2y-\pi y=4x\implies \cfrac{120-2y-\pi y}{4}=x
\\\\[-0.35em]
\rule{34em}{0.25pt}$

$\bf \stackrel{\textit{area of the enclosure}}{A=xy+\cfrac{\pi y^2}{8}}\implies A=\left( \cfrac{120-2y-\pi y}{4} \right)y+\cfrac{\pi y^2}{8}
\\\\\\
A=\cfrac{120y-2y^2-\pi y^2}{4}+\cfrac{\pi y^2}{8}\implies A=\cfrac{240y-4y^2-2\pi y^2+\pi y^2}{8}
\\\\\\
A=\cfrac{240y-4y^2-\pi y^2}{8}\implies A=\cfrac{240y}{8}-\cfrac{4y^2}{8}-\cfrac{\pi y^2}{8}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
~\hfill A=30y-\cfrac{1}{2}y^2-\cfrac{1}{8}\pi y^2~\hfill$

5 0

3 years ago

You mow 3 lawns in 5 hours. How long will it take to mow 9 lawns? Explain your thinking​

You mow 3 lawns in 5 hours. How long will it take to mow 9 lawns? Explain your thinking