If the numerator of a fraction is increased by 3, the fraction becomes 3/4. If the denominator is decreased by 7, the fraction becomes 1.

What is the numerator of the fraction?
A. 2
B. 9
C. 16

I will give brainlist to the one who gets the answer right....​

*correct data set given: 8, 8, 8, 16, 16, 16, 32, 32, 32, 32, 32, 32, 64, 64, 64, 64, 64, 64, 64, 80, 80, 80, 80, 88, 88, 88.

Answer:

See attachment

Step-by-step explanation:

To create a dot plot, first, prepare a tally for the given data set as follows:

Ounces of water => frequency

8 => 3

16 => 3

32 => 6

64 => 7

80 => 4

88 => 3

Next is to draw a scaled horizontal line. This will indicating the number of ounces of water each student drank. The frequency for each will determine how many dot to be plotted against each amount of ounces represented.

A simple dot plot has been created and attached below. Each dot represents the amount of water, in ounces, drank by each of the 26 students.

Answer:

See Explanation

Step-by-step explanation:

The data give is for 25 students not 26 as stated in the question

First, we need to plot the frequency table:

This is done as follows:

Ounces of Water ----- Frequency

8  ----------------------------- 3

16 ----------------------------- 3

32 ---------------------------- 6

64 ---------------------------  7

80 ----------------------------- 3

88 ----------------------------- 3

Next, we can now plot the dot plot using an interval of 8 on the x axis

(See Attachment)

Answer:

r>3/2

Step-by-step explanation:

Hope this helps!!

Answer:

432cm^3

Step-by-step explanation:

Volume=l×b×h

=9×8×6

432cm^3

Answer:

x=22.5

Step-by-step explanation:

the left side is a right angle meaning that is is 90 degrees, so 4x = 90, divide by 4 and you get x=22.5

Answer:

The expected value of the total sales projection is $24,773.

Step-by-step explanation:

Let sales be A,B and C respectively for each outcome.

Total Sales = A + B + C

E(Total Sales) = E(A + B + C)  

We know that A, B and C are three mutually exclusive events as they all cannot be true at a given point time

E(Total Sales) = E(A) + E(B) + E(C)

= 0.3*285*32 + 0.4*490*47 + 0.3*750*57

= $24,773

Therefore, expected value of the total sales projection is $24,773.

Answe 6-6

Step-by-step explanation: i hade 6 point and i lost 6 points hint 6-6

Answer:

-6 :(

Step-by-step explanation:

Answer:

2x + 2

Step-by-step explanation:

robert equals x

Answer:

it would have to be 2x+2 to get ur x for robett

Answer:

Standered Notation

1. 2.5 x 10 x 10 x 10

2. 3.442 x 10 x 10 x 10 x 10

Scientific notation

1. 4.59 × 10^9

2. 3.442 × 10^4

Step-by-step explanation:

Brainiest please.

Answer:

60

Step-by-step explanation:

The multiples of 15 are : 15, 30, 45, 60, 75, 90, .... 60 is a common multiple (a multiple of both 12 and 15), and there are no lower common multiples. Therefore, the lowest common multiple of 12 and 15 is 60.

Answer:

the LCM is 60

Step-by-step explanation:

Answer:

The  confidence interval for 90% confidence would be narrower than the 95% confidence

Step-by-step explanation:

From the question we are told that

  The  sample size is n = 41

For a 95% confidence the level of significance is  [tex]\alpha = [100 - 95]\% = 0.05[/tex] and

the critical value  of  [tex]\frac{\alpha }{2}[/tex]  is   [tex]Z_{\frac{\alpha }{2} } =Z_{\frac{0.05 }{2} }= 1.96[/tex]

For a 90% confidence the level of significance is  [tex]\alpha = [100 - 90]\% = 0.10[/tex] and

the critical value  of  [tex]\frac{\alpha }{2}[/tex]  is   [tex]Z_{\frac{\alpha }{2} } =Z_{\frac{0.10 }{2} }= 1.645[/tex]

So we see with decreasing confidence level the critical value  decrease

Now the margin of error is mathematically represented as

         [tex]E = Z_{\frac{\alpha }{2} } * \frac{s}{\sqrt{n} }[/tex]

given that other values are constant and only [tex]Z_{\frac{\alpha }{2} }[/tex] is varying we have that

         [tex]E\ \ \alpha \ \ Z_{\frac{\alpha }{2} }[/tex]

Hence for  reducing confidence level the margin of error will be reducing

  The  confidence interval is mathematically represented as

        [tex]\= x - E < \mu < \= x + E[/tex]

Now looking at the above formula and information that we have deduced so far we can infer that as the confidence level reduces , the critical value  reduces, the margin of error  reduces and the confidence interval becomes narrower

Using confidence interval concepts, according to the margin of error, the 90% confidence interval would be narrower than the 95% confidence interval.

The margin of error of a confidence interval is given by:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which:

The higher the margin of error, the wider the interval is.

A similar problem is given at https://brainly.com/question/22966154

Answer:

3/18

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

x + 2x + 6+x = 26

2x + 2x = 26 - 6

4x = 20

x = [tex]\frac{20}{4}[/tex]

∴ x = 5.

Answer:

7 miles

Step-by-step explanation:

The pool is 7 miles from the library. Hope it helped and make me brainliest.

The angle measuring 122 degrees is supplementary to the angle next to it.

Supplementary angles are angles that add up to 180 degrees.

180 = ? + 122

Subtract 122 from both sides.

58 = ?

Now we know that the triangle has a 58 degree angle and a 90 degree angle.

58 + 90 + x = 180

Combine like terms.

148 + x = 180

Subtract 148 from both sides.

x = 32 degrees

Answer:

factoring: x=3 discriminant: 1089

Step-by-step explanation:

Let's solve your equation step-by-step.

6x2−x−40=5+2x

Answer:

expected gain = $940

Step-by-step explanation:

given data

sale in a certain warehouse = 10 moters

motors sell = $100

probability of defective = 0.03

solution

we get here expected total cost of 1 moter is the sum of product of gain and probabi;ity

EV = $100 × 0.97 + ( -$100 × 0.03)

EV = 94

so expected gain for seller on 10 moter is

expected gain = 10 × $94

expected gain = $940

Answer: 500 + 100d

Step-by-step explanation:

trust, cmon g

Answer:

500+100(x)

Step-by-step explanation:

i not 100% sure, but i hope this helps

Answer:

O= 0.6             E= 0.15             H= 0.25

E= 0.4              A= 0.024          N= 0.75

V= 0.58           Y= 174               R= 0.8

E= 17.1              E= 1.74              T= 0.008

S= 19.9            

Step-by-step explanation:

EVERYONE  _HATES

there is no 0.45 so a missing letter

Answer:

x = 8

Step-by-step explanation:

Step 1: Write equation

5x - 11 = 3x + 5

Step 2: Solve for x

Subtract 3x on both sides: 2x - 11 = 5

Add 11 to both sides: 2x = 16

Divide both sides by 2: x = 8

Step 3: Check

Plug in x to verify it is a solution.

5(8) - 11 = 3(8) + 5

40 - 11 = 24 + 5

29 = 29

Answer:

5220

Step-by-step explanation:

Answer:

0.68269

Step-by-step explanation:

When we are to find the z score for population where a random sample is picked, the z.score formula we use is

z = (x-μ)/Standard error, where

x is the raw score,

μ is the population mean

Standard error = σ/√n

σ is the population standard deviation

n = random number of samples

For : x = 38 minutes, μ = 40, σ = 10, n = 5

z = 38 - 40/10 /√25

= -2/10/5

= -2/2

= -1

Determining the probability value using z table

P(x = 38) = P(z = -1)

= 0.15866

For : x = 42 minutes, μ = 40, σ = 10, n = 25

z = 42 - 40/10 /√25

= 2/10/5

= 2/2

= 1

Determining the probability value using z table

P(x = 42) = P(z = 1)

= 0.84134

The probability that their average waiting time will be between 38 and 42 minutes is calculated as

P(-Z<x<Z)

= P(-1 < x < 1)

= P(z = 1) - P(z = -1)

= 0.84134 - 0.15866

= 0.68269

Therefore, the probability that their average waiting time will be between 38 and 42 minutes is 0.68269

Answer:

x^2-x+5

Step-by-step explanation:

(f-g)(x)=f(x)-g(x)

= (x^2 + 3) - (x - 2)   (Don’t forget the -1 multiplies to the x AND -2

= x^2 + 3 - x + 2

=x^2-x+5

Answer:

The probability that the paint  latex = 0.857

Step-by-step explanation:

From the given information:

Let consider X to be the event that the customer has purchased the latex paint

Let consider Y to be the event that the customer has purchased semigloss paint.

Now, the probability of X i.e. P(X) = 0.75

SInce X and Y are mutually exhaustive)

P(Y) = 1 - P(X)

P(Y) = 1 - 0.75

P(Y) = 0.25

Similarly, Let Consider Z be the event that the customer has purchased a roller.

We are being told that P(Z|X) = 0.6

P(Z|Y) = 0.30

[tex]P(X|Z) = \dfrac{P(Z|X)(P(X) }{P(Z|X)*P(X)+P(Z|Y)*P(Y)}[/tex]

[tex]P(X|Z) = \dfrac{0.6 \times 0.75 }{(0.6 \times 0.75) +(0.3 \times 0.25)}[/tex]

[tex]P(X|Z) = \dfrac{0.45 }{(0.45) +(0.075)}[/tex]

[tex]P(X|Z) = \dfrac{0.45 }{0.525}[/tex]

[tex]P(X|Z) = 0.857[/tex]

Thus, the probability that the paint  latex = 0.857

The concept of probability is used in order to determine the probability that the paint is latex and the probability is 0.857.

Given :

First, determine the probability that a customer will purchase semigloss paint.

[tex]P(A) = 1- P(B)\\P(A) = 1 - 0.75\\P(A) = 0.25[/tex]

In the above expression P(B) is the probability that a customer will purchase latex paint.

Now, determine the probability that the paint is latex.

[tex]P(B|C) = \dfrac{P(C|B)\times P(B)}{P(C|B)\times P(B)+P(C|A)\times P(A)}[/tex]

Now, substitute the values of all the known terms in the above expression.

[tex]P(B|C) = \dfrac{0.6\times 0.75}{(0.6\times 0.75)+(0.3\times 0.25)}[/tex]

Simplify the below expression.

[tex]P(B|C) = \dfrac{0.45}{(0.45)+(0.075)}[/tex]

[tex]P(B|C) = \dfrac{0.45}{0.525}[/tex]

[tex]P(B|C) = 0.857[/tex]

So, the probability that the paint is latex is 0.857.

For more information, refer to the link given below:

https://brainly.com/question/795909

Step-by-step explanation:

The expression is 7x-2y-1.

If x=3, then you multiply 3 and 7.

7x3=21.

21-2y-1

If y=4, then you multiply 4 and 2.

4x2=8.

21-8-1

Then you combine like terms.

21-9

So the answer is 11.

Hope it helps!

Answer:

8

Step-by-step explanation: Make sure to double-check and go in order !

Answer: (total amount paid - $40) / 0.05

Step-by-step explanation:

Given the following :

Monthly fee = $40

Additional fee = $0.05 per minute on phone

Given the the amount paid for the month is available, number of minutes he was on phone can be determined thus :

Total amount to be paid = monthly fee + additional fee

Additional fee = $0.05 × n

Where n = number of minutes on phone

Hence,

Total amount paid = $40 + $0.05n

If the amount paid is known, the number of minutes on phone can be calculated thus;

(Total amount paid - monthly fee) = $0.05n

n = (Total amount paid - monthly fee) / fee per minute on phone

(total amount paid - $40) / 0.05

Answer:

An axiomatic system is any set of axioms from which some or all axioms can be used in conjunction to logically derive theorems.

Step-by-step explanation:

1. Positively correlated: Population and income (A) - As population increases, income tends to increase. Option A is correct.

2. Negatively correlated: Temperature outside and ice cream sale - As temperature increases, ice cream sales tend to decrease. Option A is correct.

1. Two things that are positively correlated are population and income.

In this correlation, we observe that there is a positive relationship between the size of a population and the income level of that population.

This means that as the population of a region or country increases, the average income or total income tends to increase as well.

This correlation is often seen in developed countries where higher population centers are associated with better economic opportunities, leading to higher income levels.

2. Two things that are negatively correlated are temperature outside and ice cream sales.

In this negative correlation, we find that as the temperature outside increases, the sales of ice cream tend to decrease.

This is a common observation in many regions with seasonal changes. As the weather gets hotter (higher temperature), people may seek ways to cool down, and ice cream becomes a popular choice.

On the other hand, when the weather is colder, people are less likely to buy ice cream, leading to lower sales.

Hence, two things that are negatively correlated are temperature outside and ice cream sales. Option A is correct.

To learn more on Correlation click here:

https://brainly.com/question/30116167

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Complete question

1. Two things that are positively correlated are:

(A) population and income.

(B) age and weight in babies.

(C) age and weight in adults.

(D) income and gift giving.

2. Two things that are negatively correlated are:

(A) temperature outside and ice cream sales.

(B) number of failing grades and likelihood of graduation.

(C) number of menu offerings and restaurant revenue.

(D) amount of income earned and amount of income tax paid.

Answer:

1

Step-by-step explanation:

If the x-value is -4, go to -4 and go up to the line.

1