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2 years ago

PLEASE HELP!!!!!!!!!!:))))

Mathematics

2 answers:

tatuchka [14]2 years ago

7 0

A 6-pack of t-shirts for $3.12 because 3.12 ÷ 6 is 0.52

melamori03 [73]2 years ago

6 0

Answer:

the last one is the least expensive it's only $0.52

Step-by-step explanation:

$2.24 ÷ 8 = $0.56

$3.00 ÷ 3 = $1.00

$4.24 ÷ 8 = $0.53

$3.12 ÷ 6 = $0.52

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Three students want to plant a different type of flower in the school garden. However, their

Natasha_Volkova [10]

Answer:

Posting this assignment is a violation of the academic integrity code you agreed to when you enrolled in your course. If you need help, ask your teacher.

Step-by-step explanation:

Most helpers on Brainly don't really know what they are talking about. And even if you find someone who does, you will be depriving yourself of the opportunity to learn. Please put some effort into this. You are capable of much more than you realize!

4 0

2 years ago

Read 2 more answers

A set of data points has a line of best fit of y=2.5x-1.5

castortr0y [4]

To solve this problem you must apply the proccedure shown below:

1- You must apply the following formula:

$R=yo-yp$

Where $R$ is the residual, $yo$ is the observed value $y$ and $yp$ is the predicted value $y$ .

2- You only need to substitute the $x=5$ into the equation $y=2.5x-1.5$ and then, you must apply the formula for calculate the residual:

$y=2.5(5)-1.5\\ y=11$

$R=12-11\\ R=1$

The answer is: The residual is $1$

7 0

2 years ago

Read 2 more answers

Mr. Smith works on a temporary basis. The mean length of each job he gets is three months. If the amount of time he spends betwe

Eduardwww [97]

Answer:

Mr Smith gets a new job, every 5 months on the average.

Step-by-step explanation:

Mr Smith spends an average of 3 months on every job he gets.

Then he spends an average of 2 months in between jobs.

Meaning, on the average, if he has a job, he does it for 3 months, then leaves, lends the next 2 months without a job, then gets another job at the end of the 2 months without a job and then he repeats the cycle of 3 months on the job, 2 months without the job.

So, on the average it takes Mr. Smith, (3+2) months to get a new job.

6 0

2 years ago

Which table might represent ava's line ?

Serjik [45]

Answer:

The correct option is 3.

Step-by-step explanation:

To find the slope of a line Ava wrote the expression

$m=\frac{4-2}{3-1}$ ..... (1)

The formula to find the slope is

$m=\frac{y_2-y_1}{x_2-x_1}$ .... (2)

On comparing (1) and (2), we get

$x_1=1, y_1=2$

$x_2=3, y_2=4$

It means the value of y is 2 at x=1 and the value of y is 4 at x=3.

Therefore table 3 represents the Ava's line and option 3 is correct.

3 0

2 years ago

[6+4=10 points] Problem 2. Suppose that there are k people in a party with the following PMF: • k = 5 with probability 1 4 • k =

kirza4 [7]

Answer:

1). 0.903547

2). 0.275617

Step-by-step explanation:

It is given :

K people in a party with the following :

i). k = 5 with the probability of $\frac{1}{4}$

ii). k = 10 with the probability of $\frac{1}{4}$

iii). k = 10 with the probability $\frac{1}{2}$

So the probability of at least two person out of the 'n' born people in same month is = 1 - P (none of the n born in the same month)

= 1 - P (choosing the n different months out of 365 days) = $1-\frac{_{n}^{12}\textrm{P}}{12^2}$

1). Hence P(at least 2 born in the same month)=P(k=5 and at least 2 born in the same month)+P(k=10 and at least 2 born in the same month)+P(k=15 and at least 2 born in the same month)

= $\frac{1}{4}\times (1-\frac{_{5}^{12}\textrm{P}}{12^5})+\frac{1}{4}\times (1-\frac{_{10}^{12}\textrm{P}}{12^{10}})+\frac{1}{2}\times (1-\frac{_{15}^{12}\textrm{P}}{12^{15}})$

= $0.25 \times 0.618056 + 0.25 \times 0.996132 + 0.5 \times 1$

= 0.903547

2).P( k = 10|at least 2 share their birthday in same month)

=P(k=10 and at least 2 born in the same month)/P(at least 2 share their birthday in same month)

= $0.25 \times \frac{0.996132}{0.903547}$

= 0.0.275617

6 0

2 years ago