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3 years ago

A) The pointer lands on an even number more often than expected

Mathematics

1 answer:

fgiga [73]3 years ago

6 0

Answer:

The correct answers are A, D, and E.

Step-by-step explanation:

The expected probability of the spinner landing on an even number is 50%, or 125 times. However, it lands on an even number 135 times, which is equal to 54%. This is more than expected. The actual probability is the probability after an experiment has been conducted, therefore the actual probability of landing on an odd number is 46%. The expected probability is the probability before an experiment is conducted, so it is 50%. It is equally likely for the spinner to land on an even or odd number, because each spin is an independent event.

I hope this helps!

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The Gerardi family can travel to Oshkosh, Wisconsin, from Chicago, Illinois, in 4 hours if they drive an average of 45 miles per

Natali [406]

Answer:

it will take them 3.6 hours if their speed is increased

Step-by-step explanation:

First of all, we will need to find the total distance the Geradi family will be travelling. This is a better way to start, as the distance is constant regardless of their change in velocity.

Distance travelled = speed of travel X time taken = 45 X 4 = 180 miles per hour.

If the Geradi family increases their speed to 50 miles per hour, their new time will be got by dividing the total distance travelled by this new speed.

New travel time = 180 miles / 50 miles per hour = 3.6 hours

6 0

3 years ago

irina [24]

6000x = 135000; x ≈ 23.

We are required to have one fire extinguisher for every 6000 ft of space in the building; this means we need to find out how many 6000-ft spaces we have in 135000.

Solving this equation, we divide both sides by 6000:
6000x/6000 = 135000/6000 = 22.5 ≈ 23

6 0

3 years ago

The United States has 435 members of the House of Representatives in Congress. If there are 325.7 million people in the country,

drek231 [11]

Answer:

$1.36\times 10^{-6}:1$

Step-by-step explanation:

We have been given that the United States has 435 members of the House of Representatives in Congress. There are 325.7 million people in the country.

To find the ratio of members to the people, we will find compare both numbers.

1 million equals 1,000,000.

$\text{325.7 million}=325.7\times 1,000,000$

$\text{325.7 million}=3257,000,000$

Ratio of members to the people:

435: 3257,000,000

$0.0000013355848941:1$

$1.3355848941\times 10^{-6}:1$

$1.36\times 10^{-6}:1$

Therefore, our required ratio would be $1.36\times 10^{-6}$ members per person.

3 0

3 years ago

A boy spent 20% of his money on books and 20% of the remainder on food.If he had $2000 left, how much money did he have at first

DENIUS [597]

Answer:

$\$3,125$

Step-by-step explanation:

Let $s$ represent the amount of money he initially started with.

After he spent 20% on books, he will have $100\%-20\%=80\%$ of his initial money left. We can represent this as $0.8s$ .

Following that, the boy spends 20% of the remainder of his money on food. Similarly, he will have $100\%-20\%=80\%$ of the remainder of money he had left after he purchased the books. Therefore, he ends up with $0.8(0.8s)=0.64s$ of his money left.