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3 years ago

8

Eric surveys students at his school and finds that 80% have a pet. He wants to estimate the probability that, if he randomly sel

ected 4 students, more than 2 would have a pet.

1 answer:

NNADVOKAT [17]3 years ago

7 0

Yes that is correct what is the question

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The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state. The size of the

Ann [662]

The smallest county is 129 square miles large.

Step-by-step explanation:

Let,

Smallest county = x

Largest county = y

According to given statement;

The largest county in the state of Texas is 6064 square miles larger than the smallest county in the same state.

y = x+6064 Eqn 1

The size of the largest county is 48 times the size of the smallest county plus one square mile.

y = 48x+1 Eqn 2

As Eqn 1 and Eqn 2 are both equal to y, therefore,

Eqn 1 = Eqn 2

$x+6064=48x+1\\6064-1=48x-x\\6063=47x\\47x=6063$

Dividing both sides by 47

$\frac{47x}{47}=\frac{6063}{47}\\x=129\ square \ miles$

The smallest county is 129 square miles large.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

7 0

3 years ago

How many times larger is the value of 42.38 compared to 4.238

patriot [66]

Answer:

10 times larger

5 0

3 years ago

Our math team had m students last year, but this year it has already n students! By what percent did the number of students grow

AlekseyPX

For this case we are going to assume the following:
m: whole number greater than zero.
n: integer greater than zero.
Where,
n> m
According to these assumptions, the percentage of growth is given by the following formula:
$(n / m) * 100 - 100$
Answer:
the number of students did grow by:
$(n / m) * 100 - 100$

4 0

3 years ago

Read 2 more answers

A maps key shows that every of 5 inches on the map represents 200 miles of actual distance.suppose the distance between 2 cities

Lady bird [3.3K]

200/5 = 40 miles per inch. 40x7=280 actual miles.

6 0

3 years ago

Apply the properties of operations to find an equivalent expression for finding the total cost of the clothes.

lora16 [44]

Answer: 1.The total cost = 4x + 2y

2.The total cost = 2y + 4x

3.The total cost = 6x + 4y

4.The total cost = 4y + 6x

Step-by-step explanation: mark me brailyest and like aslo follow

6 0

2 years ago