question is in the pic

The probability that all three girls are together is 0.03

Here we will use the string method

Consider 3 girls as a single element, and consider the other 3 boys as 3 separate elements

So total we have 4 element

So the arrangement of  4 elements is given by  4!

Arrangement of girls inside a single element given by 3!

So the way of getting all girls together is given by 4! × 3! = 24 × 6 =144

Total way of arranging 7 people given by 7! = 5040

Probability = Required cases / Total cases

= 144 / 5040

= 0.03

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Answer:

  G.  12

Step-by-step explanation:

You want the number of ways 1 male and 2 females can be chosen from a group of 2 males and 4 females.

From a group of 2 males, there are 2 ways that 1 male can be chosen. (He can be one, or the other.

From a group of 4 females, there can be 4C2 = 4!/(2!(2!)) = 4·3/2 = 6 ways that 2 females can be chosen.

The total number of possible groups is the product of the numbers of groups of males and of females:

  possible groups = 2 · 6 = 12

G. There are 12 possible groups of 3 people.

__

Additional comment

If the males are {a, b} and the females are {A, B, C, D}, the 12 possible groups are ...

  aAB aAC aAD aBC aBD aCD bAB bAC bAD bBC bBD bCD

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Answer: 7(x^3-5)

Step-by-step explanation:

the common number between 7 and 35 is seven( 7*1=7, 7*5=35)

so with the 7 outside the parenthesis we end up having inside the parenthesis x^3 and 5 because x=1 and 7*1=7 and the 5 because 7*5=35 so if we distribute the seven we would get the original answer

Answer:

[tex]7(x^3-5)[/tex]

Step-by-step explanation:

Given expression:

[tex]7x^3-35[/tex]

To factor the given expression, begin by rewriting 35 as 7 · 5:

[tex]\implies 7x^3-7 \cdot 5[/tex]

Now factor out the common term 7:

[tex]\implies 7(x^3-5)[/tex]

The percentage in 2009, calculated from the logarithmic function is given as follows:

16.5%.

Which underestimates the graphed amount by 0.4%.

According to the model, the year in which 18.4% of the domestic gross product will go towards healthcare is:

2020.

The logarithmic function in the context of this problem is given as follows:

f(x) = 1.2ln(x) + 15.2.

In which x is the number of years since 2006.

2009 is three years after 2006, hence the percentage is obtained as follows:

f(3) = 1.2ln(3) + 15.2 = 16.5%.

The percentage on the graph is given by:

16.9%.

Hence the function underestimates the graphed amount by 0.4%.

The year in which 18.4% of the domestic gross product will go towards healthcare is x for which f(x) = 18.4, hence:

18.4 = 1.2ln(x) + 15.2.

1.2ln(x) = 3.2

ln(x) = 3.2/1.2

ln(x) = 2.67.

ln and the exponential are inverse functions, hence:

x = e^2.67 = 14.4.

2006 + 14 = 2020.

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The equation of the line is y = (-3/5)x - 3

The equation of the line given

y = (5/3)x + 1

The slope intercept form is

y = mx + b

Where m is the slope of the line

b is the y intercept

Comparing the given equation

slope of the line m = 5/3

The slope of the perpendicular line = -1/m

= -1 ÷ 5/3

= -3/5

The line is passing through the point (-10, 3)

The point slope form is

[tex]y-y_1=m(x-x_1)[/tex]

Substitute the values in the equation

y - 3 = (-3/5)(x - (-10))

y - 3 = (-3/5)x - 6

y = (-3/5)x - 6 + 3

y = (-3/5)x - 3

Hence, the equation of the line is y = (-3/5)x - 3

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The value of y in the  expression is y= - (x + 4) or,  y= (x -4)

Algebraic expression in mathematics is a phrase that include coefficients, unknown variables  operations, and constants

To solve for y in the equation 10x+5y=5x+20 we apply algebraic rule;

Step 1: Collect the like terms by moving the unknown 'ý' to the left side of the equation

5y =5x -10x+20

Step 2: Evaluate the the expression 5y =5x -10x+20

5y = -5x + 20

Step 3: Divide both sides by 5

[tex]\frac{5y }{5}[/tex] = [tex]\frac{-5x +20}{5}[/tex]  

y = -5x/5  + 20/5

y = - (x + 4) or,  y= (x -4)

Therefore, the value of y in the expression is y= - (x + 4) or,  y= (x -4)

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The commonly used technique in problem solving is means-end analysis

One typical heuristic is to define subproblems or subgoals. Means-ends analysis, which entails determining how to close the gap between a goal and the actual situation, is another frequently employed heuristic. You can divide a problem into smaller problems and deal with each one separately by using means-ends analysis.

Heuristic problem-solving entails what?

A problem-solving heuristic is a non-formal, speculative process that, in certain circumstances, produces a solution but not in others. The strategy can be either more or less successful than employing an algorithm because the results of applying a heuristic are unpredictable.

So,therefore the means-end analysis is commonly used technique in problem solving

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The changes in his account is that (d) The balance of the account increases by 6% each year.

The function of the account balance is given as

f(x) = 4,000 (1.06)*

The above function is an exponential growth function

Such that the growth factor (b) is the number in bracket

This is represented as

b = 1.06

The percentage growth rate (r) is calculated as:

r = b - 1

Substitute known values

r = 1.06 - 1

Evaluate the difference

r = 0.06

Express as percentage

r = 6%

This implies that the balance increases by 6% each year.

So, the true statement is (d)

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25 is 2.87 percent of 872.

First, let us understand the percentage:

A percentage is a fraction of a whole expressed as a number between 0 and 100. Nothing is zero percent, everything is 100 percent, half of everything is fifty percent, and nothing is zero percent.

To determine a percentage, we need to divide the portion of the whole by the whole itself and multiply by 100.

We need to find 25 is what percent of 872.

Let 25 be x percent of 872.

So,

872 * x % = 25

872 * x / 100 = 25

872x = 25 * 100

x = 25 * 100 / 872

x = 2.87 %

So, 2.87 % of 872 is 25.

Thus, 25 is 2.87 percent of 872.

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Answer:

2/3

Step-by-step explanation:

the slope is rise over run so y/x

The linear function rule of the equation is y =  x + 18

From the question, the points on the line are given as

(2, 20) and (9, 27).

So, we have the following ordered pairs

(x, y) = (2, 20) and (9, 27).

The slope of the line is then calculated using the following slope equation

Slope = (y₂ - y₁)/(x₂ - x₁)

Where

(x, y) = (2, 20) and (9, 27).

Substitute the known values in the above equation

So, we have the following equation

Slope = (27 - 20)/(9 - 2)

Evaluate the above quotient

Slope = 1

The equation is then calculated as

y = Slope(x - X) + Y

Substitute the known values in the above equation

So, we have the following equation

y = 1 * (x - 2) + 20

So, we have

y =  x + 18

Hence, the equation of the line is y =  x + 18

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The equivalent expressions are (6^(-4) )^(-4), (6^(-2) )^(-8) and (6^8 )^2

Using exponent property, we have

[tex](a^{m})^{n} = a^{m*n}[/tex]

The given expressions is 6^16

From the question, we have

(6^0 )^16=6^(0×16)

⇒6^0 ≠ 6^16

(6^8 )^8=6^(8×8)

⇒6^64 ≠ 6^16

(6^(-4) )^(-4)=6^(-4x-4)

⇒6^16

(6^(-2) )^(-8)=6^(-2×-8)

⇒6^16

(6^(-1) )^16=6^(-1×16)

⇒6^(-16)≠6^16

(6^8 )^2=6^(8×2)

⇒6^16

Multiplication:

In mathematics, multiplying the numbers is used to find the product of two or more numbers. We frequently perform one of the basic mathematical operations. The simplest basic application is to use multiplication tables. Mathematicians multiply two integers to express the repetitive addition of one number to another. It is possible to contain natural numbers, fractions, integers, whole numbers, and other forms of numbers. M would either be added to itself 'n' times or subtracted from itself when M is multiplied by n.

Complete question:

Which expressions are equivalent to 6^16?

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The student that correctly used partial quotients to show 552 divided by 23 was Gavin.

The purpose of partial quotients is to facilitate division as by using partial quotients students can easily divide big numbers by using easy multiples first and then adding the multiplers to find the final divisiors. The recommended numbers to use are 5 or 10.

Based on the information provided, it can be conclude Gavin was better at applying this method because he used only easy multiples (10, 2) to make the number easier to divide, while Brianna completed the process only through to steps, which is not recommended when applying this method.

In conclusion, Gavin was the one who correctly used the method and calculated the result.

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Answer:A. 20% B.45%

A= 40,000/40,000/200000=.2 Or 20%b. 90,000/200000=.45

Step-by-step explanation:

hope i helped!

Using the corresponding angle theorem, the value of m∠E is 155.

In the given question we have to find the value of m∠E.

As we know that,

According to the corresponding angle theorem, if a transversal meets two parallel lines, the corresponding angles must be congruent.

So from the figure

4x−35=x+10

Add 35 on both side we get

4x=x+10+35

4x=x+45

Subtract  on both side

4x−x=x+45−x

3x=45

Divide by 3 on both side we get

x=15

So the value of x+10

=15+10

=25

As we know that value the angle of straight line is 180.

So m∠E+25=180

Subtract 25 on both side we get

m∠E=180−25

m∠E=155

Hence, the value of m∠E is 155.

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Answer:

Step-by-step explanation:

The volume of the rectangular prism is 12 cubic inches

It is given that Each cube represent 1 unit

The base length of the rectangular prism = 4 inches

The base width of the rectangular prism = 3 inches

The height of the rectangular prism = 1 inches

The volume of the rectangular prism = The base length of the rectangular prism × The base width of the rectangular prism × The height of the rectangular prism

Substitute the values in the equation

The volume of the rectangular prism  = 4 × 3 × 1

= 12 cubic inches

Hence, the volume of the rectangular prism is 12  cubic inches

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The expression when the brackets are removed is 15x - 4

From the question, we have the following expression that can be used in our computation:

6 + 5(3x - 2)

The above expression has brackets

So, we start by expanding the brackets

Solving further, we have

6 + 5(3x - 2) = 6 + 15x - 10

Collect the like terms

This gives

6 + 5(3x - 2) = 15x - 10 + 6

Evaluate the like terms

So, we have

6 + 5(3x - 2) = 15x - 4

Hence, the expression is 15x - 4

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The average age of all the animals at the animal rescue center is 5.4 months .

In the question ,

it is given that ,

at an animal rescue center .

percent of dogs that are present in the animal rescue = 80%

percent of cats that are present in the animal rescue = 20%

let suppose that there are total of 100 animals in the animal rescue .

So , the number of dogs = 80

and the number of cats = 20

also given that ,

the average age of dogs = 6 months

the average age of cats = 3 months .

So , the average age of all the animals can be calculated by

Average age = (80×6 + 20×3)/100

= (480 + 60)/100

= 540/100

= 5.4 months

Therefore , The average age of all the animals at the animal rescue center is 5.4 months .

At an animal rescue 80% of the animals are dogs and 20% of the animals are cats. If the average age of the dogs is six months and the average age of the cat is three months what is the average age of all the animals ?

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Answer:

The answer is false.

Step-by-step explanation:

If you do not already know this, a negative and a negative equals a positive. Therefore, instead of –8 • –4 = –32, the correct answer would be –8 • –4 = 32.

Hope that helps! Have an amazing rest of your day! Brainliest welcome! :)

Answer: is false.

hope this helps

have a good day

Step-by-step explanation:

Answer:

Step-by-step explanation:

We can tell that an equation has multiple/ infinitely many solutions if we try to solve it and get a variable or a number equal to itself.

Let's solve the given equation and see what we'll get :-

[tex]\sf 15-10b-6=-10b+9[/tex]

Add 10b to both sides:-

[tex]\sf 15-10b-6+10b=-10b+9+10b[/tex]

Simplify:-

[tex]\sf 15-6=9[/tex]

Subtract:-

[tex]\sf 15-6=9[/tex]

[tex]\sf 9=9[/tex]

As we can see, both sides ended up equal, therefore, this equation has infinitely many solutions!

Hope this helps!

Have a great day!

The amount of money spend on music from the fractional value is $1.30;

What are fractions?

Fractions are referred to as the components of a whole in mathematics. A single object or a collection of objects might be entire. When we cut a piece of cake in real life from the entire cake, the part represents the percent of the cake. The word "fraction" is derived from Latin. "Fractus" means "broken" in Latin. The fraction was expressed verbally in earlier times. It was afterward presented in numerical form.

A piece or sector of any quantity is another name for the fraction. It is indicated by the sign "/," such as a/b. For instance, in the fraction 2/4, the lower part represents the denominator, and the top part the numerator.

In the given question, we have:

spends 3/4 of her money on game apps

spends $0.98 on music apps.

So, we can assume the total amount to be K;

So, The fraction of money spend on music is K/4;

According to the question, we have:

[tex]\frac{1}{4} \times k[/tex] = $0.98;

⇒K = $3.92;

So, The total amount with Kim is $1.30;

Hence,

The amount of money spend on music is $1.30;

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The probability of Johnny winning is  [tex]20 *(\frac{2^3}{3^6} )[/tex].

Given data;

Johnny throws six equal dice with six sides and the numbers 1 through 6 on them. He needs a 5 or 6 on precisely 3 of the dice to take home the prize. What are Johnny's odds of winning?

The probability of 5 or 6 = 2/6

                                 = 1/3

The probability of not 5 or 6 = 4/6

                                = 2/3

The total probability of getting in exactly 3 chances;

⇒ ⁶C₃ * (1/3)³ * (2/3)³

⇒ [tex]20 *(\frac{2^3}{3^6} )[/tex]

Hence, the chances for Johnny to win are  [tex]20 *(\frac{2^3}{3^6} )[/tex].

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Irrational Number

Step-by-step explanation:

Alternatively, 3 is a prime number or rational number, but √3 is not rational number.

Here, the given number √3 is equal to

1.73205080756 which gives the result of non

terminating and non recurring decimal and keep on extending , and cannot be expressed as fraction ..,

Therefore √3 is Irrational Number.

For the given standard deviation and sample mean the two sided confidence interval on mean diameter foe 95% and 99% is given by        ( 1.4983 , 1.5107 ) and ( 1.49635 , 1.51265 ) respectively.

As given in the question,

Confidence interval for population mean is given by:

[tex]\bar{x}[/tex] ± z × ( σ / √n)

Where,

σ = population standard deviation.

n= sample size

[tex]\bar{x}[/tex] = Sample mean

Given values from the random sample size are :

σ = 0.01 inches

n= 10

[tex]\bar{x}[/tex] = 1.5045

Critical value confidence interval (using x-value table)

z  for 99% = 2.576 and Significance level = 0.01

z for 95% = 1.960 and Significance level = 0.05

99% two-sided confidence interval on the mean hole diameter is equal to :

[tex]\bar{x}[/tex] ± z × ( σ / √n)

= 1.5045 ± 2.576 × ( 0.01 / √10)

= 1.5045 ± 0.00815 (approximately)

= 1.5045 - 0.00815 , 1.5045 + 0.00815

= ( 1.49635 , 1.51265 )

95% two-sided confidence interval on the mean hole diameter is equal to :

[tex]\bar{x}[/tex] ± z × ( σ / √n)

= 1.5045 ± 1.960 × ( 0.01 / √10)

= 1.5045 ± 0.00620 (approximately)

= 1.5045 - 0.00620 , 1.5045 + 0.00620

= ( 1.4983 , 1.5107 )

Therefore, for the given standard deviation and sample mean the two sided confidence interval on mean diameter foe 95% and 99% is given by ( 1.4983 , 1.5107 ) and  ( 1.49635 , 1.51265 ) respectively.

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Answer: 5 hours.

Step-by-step explanation: First you need to subtract the $12 fee from the total to find out how many hours he paid for. 57-12=45. So if he paid $45 at $9 per hour, 45 divided by 9 equals 5.

Answer:

The unit price per pretzel is 57 cents (fifty-seven cents) each!

Step-by-step explanation:

Step One: Divide

Since the price is 171 dollars for 300 large pretzels, and you want to find the price of each pretzel, divide the price by the amount of pretzels.

171 / 300 = 0.57

Step Two: Convert

The answer is 0.57, but since you want to know the unit price, you need to convert it to dollars, and that's simple.

0.57 of a dollar is 57 cents.

Step Three: Get your Answer

Your answer is 57 cents per pretzel! You can double-check this by multiplying 0.57 by 300, getting 171.

Hope my answer helped you!

Answer:

25%

Step-by-step explanation:

Lets find how many people were at the pool at the 4th week.

1060 - 110 + 145 - 247 =

848

Use percent error formula,

[tex]\frac{v_a-v_e }{v_e}[/tex]

Actual - Estimate over Estimate

Actual (1st week): 1060

Estimate (4th week): 848

Plug into formula.

[tex]\frac{1060-848}{848}[/tex]

Simplify.

[tex]\frac{212}{848}[/tex]

Divide.

0.25

Multiply by 100 and write with a percentage sign.

0.25*100 = 25

25%

Answer:

The percent decrease is 20%

Step-by-step explanation:

First week : 1060 people

Second week: 1060 - 110 = 950 people

Third week : 950 + 145 = 1095 people

Fourth week: 1095 - 247 = 848 people

Make 1060 the whole (100%), we need to figure out 848 percent

848      x

1060   100

848 x 100 = 84800

84800  divided by 1060 = 20

From 1060 people to 848 people is a 20% decrease

An equation of the line that passes through the point (-3, -1) and is perpendicular to the line x - 2y = 6 is y = -2x - 7.

Mathematically, the standard form of the equation of a straight line is given by this mathematical expression;

y = mx + c

Where:

Next, we would rewrite the given equation representing a line in standard form:

x - 2y = 6

2y = x - 6

y = x/2 - 6

Therefore, slope (m) = 1/2

In Mathematics, a condition that must be met for two lines to be perpendicular is given by:

m₁ × m₂ = -1

1/2 × m₂ = -1

m₂ = -2

At point (-3, -1), an equation of this line can be calculated by using the point-slope form:

y - y₁ = m(x - x₁)

y - (-1) = -2(x - (-3))

y + 1 = -2(x + 3)

y + 1 = -2x - 6

y = -2x - 6 - 1

y = -2x - 7

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