1. To call London, a long distance phone company charges a fixed rate for the first minute different rate for each additional minute. If a 12 minute phone call costs $2.35 and a 25 inute call costs $3.65, how much are their rates?

The slope of the line passing through the points (10) 2, and (14), is -9/-13.

A line's steepness and direction are measured by the line's slope.

Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all

Any two different points on a line can be used to calculate the slope of any line.

A line's slope is determine by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively.

Two locations located on a straight line can be used to determine a line's slope. We can use the slope of line formula if we know the two spots' coordinates. These two points' coordinates should be-

P1 = (x1, y1) and P2 = (x2, y2)

Hence, The slope of the line passing through the points (10) 2, and (14), is -9/-13.

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Answer:

[tex]\huge\boxed{\sf h = 130\ m}[/tex]

Step-by-step explanation:

Time = t = 5.2 s

Velocity = v = 25 m/s

Height = h = ?

h = vt

h = 25(5.2)

[tex]\rule[225]{225}{2}[/tex]

Answer:

The valley is 130 m deep.

Step-by-step explanation:

Formula we use,

→ Height = Time × Speed

Now the height will be,

→ Time × Speed

→ 5.2 × 25

→ 130 metres

Thus, valley is 130 m deep.

Answer:

They are all prime numbers

Explanation:

17, 19, 46, and 55 are all prime numbers. A prime number is a whole number greater than 1 that is only divisible by 1 and itself. Since 17, 19, 46, and 55 are all prime numbers, they have no other factors besides 1 and themselves, which means they cannot be divided evenly by any other number.

Answer:

x = -8

Step-by-step explanation:

Given equation,

→ (x/4) - 6 = -8

Now the value of x will be,

→ (x/4) - 6 = -8

→ x/4 = -8 + 6

→ x/4 = -2

→ x = -2 × 4

→ [ x = -8 ]

Hence, the value of x is -8.

If D be a region bounded by a simple closed path C in the xy-plane, then the centroid of the quarter circle is  (4a/3π , 4a/3π)   .

In the question ,

it is given that D is the region bounded by a simple closed path C in the xy-plane .

the radius of the circle is = "a" ,

let the equation of the circle be x² + y² = a² ,

So , the area of the quarter circle is (A)  = (1/4)*πa²

The coordinate of the centroid x will be :

x = [tex]\frac{1}{2A} \int\limits x^{2} dy[/tex]

x = [tex]\frac{1}{2(\frac{\pi a^{2} }{4})} \int\limits^a_0 {a^{2} -y^{2} } \, dy[/tex]

Simplifying further ,

we get ,

x = 2/πa² [{a²(a) - a³/3} - 0 ]

x = 2/πa² [a³ - a³/3 ]

x = 4a/3π

The coordinate of the centroid y will be :

y = [tex]\frac{1}{2A} \int\limits y^{2} dx[/tex]

y = [tex]\frac{1}{2(\frac{\pi a^{2} }{4})} \int\limits^a_0 {a^{2} -x^{2} } \, dx[/tex]

Simplifying further ,

we get ,

y = 2/πa² [{a²(a) - a³/3} - 0 ]

y = 2/πa² [a³ - a³/3 ]

y = 4a/3π

Therefore , the coordinates of the centroid is (4a/3π , 4a/3π) .

The given question is incomplete , the complete question is

Let D be a region bounded by a simple closed path C in the xy-plane. The coordinates of the centroid x, y of D are x = [tex]\frac{1}{2A} \int\limits x^{2} dy[/tex]  ,  y = [tex]\frac{1}{2A} \int\limits y^{2} dx[/tex] ?  

Find the centroid of a quarter-circular region of radius a.

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Step-by-step explanation: To fill in the table, we will need to first count the number of times each wait time appears in the given data. We can then use these counts to fill in the Frequency column of the table. We will also need to calculate the relative frequency of each wait time, which is the number of times it appears in the data divided by the total number of data points. We can then use these relative frequencies to fill in the Relative Frequency column of the table, expressed as a percentage.

Here is the completed table:

Wait Time (minutes) Frequency Relative Frequency (%)

5                                     5                 11.36

10                                 4                  9.09

15                                 7                  15.91

20                                6                   13.64

25                                7                   15.91

30                                 4                   9.09

35                                5                    11.36

40                                3                    6.82

45                                 2                    4.55

50                                 1                    2.27

60                                  2                    4.55

75                                  1                       2.27

Note that the total number of data points is 44, so each relative frequency is calculated as the corresponding frequency divided by 44.

I hope this helps! Let me know if you have any other questions.

The angle of elevation of the ramp to the nearest degree will be 5.71°.

The branch of mathematics that sets up a relationship between the sides and the angles of the right-angle triangle is termed trigonometry. The trigonometric functions, also known as a circular, angle, or goniometric functions in mathematics, are real functions that link the angle of a right-angled triangle to the ratios of its two side lengths.

Given that a ramp goes from a doorway of a building to the ground. The end of the ramp connected to the doorway is 1 foot above the ground. The horizontal distance from the bottom of the ramp to the building is 10 feet.

The angle of elevation will be calculated as,

tanθ = ( 1 / 10)

θ = tan⁻¹(1/10)

θ  = 5.7°

Therefore, the angle of elevation of the ramp to the nearest degree will be 5.71°.

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Answer: Open

Step-by-step explanation: the dot is only filled in when the inequallity is "greater than or equal to" or "less than or equal to"

Answer:

Attached

Step-by-step explanation:

The equation which have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p is 230p – 1010 = 650p – 400 –p

Expression in mathematics is combination of variables with the use of operations and given rules. It can be in the form of equation, numbers etc.

Given that an expression;

2.3p – 10.1 = 6.5p – 4 – 0.01p

Firstly we will simplify the above expression by removing decimals.

For that,

(23 / 10)p – (101 / 10) = (65 / 10)p – 4 – (1 / 100)p

Now we will take LCM,

{ (23 - 101) / (10) }p = {650p - 400 - p} / 100

230p – 1010 = 650p – 400 –p

Therefore The equation which have the same solution as 2.3p – 10.1 = 6.5p – 4 – 0.01p is 230p – 1010 = 650p – 400 –p.

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The opportunity cost of mowing the lawn is The $15 he earns minus the enjoyment he would have received from watching the football game during that time.

Opportunity costs are the possible advantages that a person, investor, or company forgoes while deciding between two options. Opportunity costs are by definition invisible, making it simple to ignore them. Making smarter decisions requires an understanding of the possible opportunities lost when a company or person selects one investment over another.

Opportunity Cost =FO−CO where:

FO=Return on best-forgone option

CO=Return on the chosen option

​The formula for calculating an opportunity cost is simply the difference between the expected returns of each option.

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The number of alligators was there in Orange country, Florida in 2001 is equal to 43872.

The Latin term "per centum," which signifies "by the hundredth," was the source of the English word "percentage." Segments with a denominator of 100 are considered percentages. In other words, it is a relationship where the worth of the entire is always considered 100.

As per the given information provided in the question,

Total number of alligators 1992 = 285

Percent increase of alligators every year = 75%

Total number of years from 1992 to 2001,

2001 - 1992 = 9 years

The population of alligators in 2001,

= 285 × (175/100)⁹

= 285 × (7/4)⁹

= 43871.98 or,

= 43872 alligators.

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By power algebra method,

a) [tex]\frac{16}{81}[/tex]

b) [tex]\frac{2xy}{3}[/tex]

c) [tex]\frac{16x^4}{y^8}[/tex]

d) [tex]\frac{3y^2}{x^3}[/tex]

According to the Quotient of Powers Property, you can maintain the base and subtract the exponents when dividing two exponents by the same base. Since you cannot divide by zero, this characteristic will always hold true as long as the base is not zero. For more information on this property, use the interactive below.

The Exponents Power Rule: am*n = (am)n. Multiply the exponent by the power to increase a number with an exponent to that power.

You divide them by the highest exponent in the numerator (the numerator) and the lowest exponent in the denominator (the bottom exponent).

a) [tex](\frac{2}{3})^4[/tex] = [tex]\frac{2*2*2*2}{3*3*3*3}[/tex] = [tex]\frac{16}{81}[/tex]

b) [tex]\frac{2x^2y}{3x}[/tex] = [tex]\frac{2*x*x*y}{3*x}[/tex] = [tex]\frac{2xy}{3}[/tex]

c) [tex](\frac{2x}{y^2})^4[/tex] = [tex]\frac{2x*2x*2x*2x}{y^2*y^2*y^2*y^2}[/tex] = [tex]\frac{16x^4}{y^8}[/tex]

d) [tex]\frac{3xy^4}{x^3}[/tex][tex].\frac{y}{xy^3}[/tex] = [tex]\frac{3x*y*y*y*y}{x*x*x} . \frac{y}{x*y*y*y}[/tex] = [tex]\frac{3y^2}{x^3}[/tex]

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The cosine of the angle 199° will be less than zero that is cos 199° < 0. Then the correct option is C.

Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.

The angle of 199° lies in the third quadrant.

In the third quadrant, the sine and cosine of the angle are negative and the tangent of an angle is positive.

The cosine of the point 199° will be under zero that is cos 199° < 0. Then, at that point, the right choice is C.

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Answer:

3.714

Step-by-step explanation:

26 x ⅐ = 26 / 7

= 3.714 or [tex] 3 \frac{5}{7} [/tex]

The elements of the required sets would be:

(a) (P∩Q)∪R = {1, 2, 3, 4, 5, 7}

(b) (R∩P)'∪R = {2, 3, 4, 5, 6, 7, 8, 9, 10}

(c) Q'∩(P∪R) = {2, 3, 5, 7}

(d) (P∪Q∪R)'∩(P∩R) = ∅

A set, denoted by the curly brackets , is a grouping of items, numbers, elements or objects.

A set of numbers, for instance, is 1, 2, 3, 4.

Solution:

P' = {2, 4, 6, 8, 10}

Q' = {1, 4, 6, 8, 9, 10}

R' = {6, 7, 8, 9, 10}

P∩Q = {3, 5, 7}

R'∪P' = {2, 4, 6, 7, 8, 9, 10}

P∪R = {1, 2, 3, 4, 5, 7, 9}

P∩R = {1, 3, 5}

P∪Q∪R = {1, 2, 3, 4, 5, 7, 9}

P'∩Q'∩R' = S - P∪Q∪R

               = {6, 8, 10}

Now we can find the elements of the required sets:

(a) (P∩Q)∪R = {1, 2, 3, 4, 5, 7}

(b) (R∩P)'∪R = {2, 3, 4, 5, 6, 7, 8, 9, 10}

(c) Q'∩(P∪R) = {2, 3, 5, 7}

(d) (P∪Q∪R)'∩(P∩R) = ∅

Hence, the elements of the required sets would be

(a) (P∩Q)∪R = {1, 2, 3, 4, 5, 7}

(b) (R∩P)'∪R = {2, 3, 4, 5, 6, 7, 8, 9, 10}

(c) Q'∩(P∪R) = {2, 3, 5, 7}

(d) (P∪Q∪R)'∩(P∩R) = ∅

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Check the picture below.

Answer:

Step-by-step explanation:

To find the number of four-letter words that can be formed using the letters in facetious, you can use the combination formula:

nCr = n! / (r! (n - r)!)

In this case, n is the total number of letters available (9) and r is the number of letters per word (4). Therefore, the number of four-letter words that can be formed is:

nCr = 9! / (4! (9 - 4)!) = 9! / (4! 5!) = (9 x 8 x 7 x 6) / (4 x 3 x 2 x 1) = 126

Therefore, there are 126 four-letter words that can be formed using the letters in facetious.

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

The coordinates are (0, 3) or (34/5, 3)

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

We have,

15x - 10y = -30 _____(1)

5x - 9y = 7 ______(2)

Multiply 3 on (2)

15x - 27y = 21 _____(3)

Using the elimination method we get,

From (1) and (3) we get,

 15x - 10y = -30

 15x - 27y = 21

(-)    (+)        (-)

      17y    = 51

This means,

y = 51/17

y = 3

Now,

Put y = 3 in (1) we get,

15x - 10y = -30

15x- 10 x 3 = -30

15x - 30 = -30

15x = 0

x = 0

Put y = 3 in (2) we get,

5x - 9y = 7

5x - 9 x 3 = 7

5x - 27 = 7

5x = 7 + 27

5x = 34

x = 34/5

Thus,

The coordinates are (0, 3) or (34/5, 3)

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It takes 2 hrs to fill the fountain with both sprinklers operating

Two or more expressions with an Equal sign is called as Equation.

Given,

A park has two sprinklers that are used to fill a fountain

One sprinkler can fill the fountain in 3 h

second sprinkler can fill the fountain in 6 h

We need to find the time required to fill the fountain by two sprinklers.

Let t = time required with both sprinklers working

t/3+t/6=1

2t+t/6=1

3t/6=1

Apply cross multiplication

3t=6

Divide both sides by 3

t=2

Hence, it takes 2 hrs to fill the fountain with both sprinklers operating

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Answer:

0.6 inches

Step-by-step explanation:

The equation to find the area of a circle is:

[tex]{a} = \pi {r}^{2} [/tex]

however the problem requires you replace π with 3.14.

Using inverse operations you can find the variable r.

Step 1:

Plug in variables.

[tex]0.2826 = 3.14{r}^{2} [/tex]

Step 2:

Solve for r.

[tex]0.2826 \div 3.14 = 3.14 \div 3.14 \times {r}^{2} \\ \sqrt{0.09} = \sqrt{ {r}^{2} } \\ r = 0.3[/tex]

Step 3:

Find diameter from radius.

[tex]0.3 \times 2 = 0.6[/tex]

The diameter of the circle is 0.6 inches.

Step-by-step explanation:

Just Substitute in place of X

Answer:

  D)  $27

Step-by-step explanation:

You want an estimate of a reasonable amount to pay for 10 gallons of gas at $229 per gallon, and 2 quarts of oil at $1.89 per quart.

For estimating purposes, we like to round numbers to 1 or 2 significant figures.

The cost of 10 gallons of gas is about 10 × $2.30 = $23.

The coast of 2 quarts of oil is about 2 × $2 = $4.

So, the total cost of the gas and oil is about $23 +4 = $27.

You expect the total to be near $27.

__

Additional comment

Part of estimating is estimating the error in your estimate. Here the error is $0.01 per gallon of gas, or $0.10 for 10 gallons. The error is $0.11 per quart of oil, so  $0.22 for 2 quarts. The final estimate of $27 is $0.10 +0.22 = $0.32 too high. $27 is different from the next answer choice by $2, so is still the best answer choice.

The no. ways roll a 1 on the die and draw a 7 from the bag of tickets is  1 And the probaility is [tex]\frac{1}{42}[/tex]

Probability is the ratio of favorable outcomes to all other potential outcomes of an event. The symbol x can be used to signify how many positive findings there are in an experiment with 'n' results. The following formula can be used to determine the likelihood of an event:

Probability (event) equals a favorable result/the total of outcomes divided by n.

The no. ways roll a 1 on the die and draw a 7 from the bag of tickets is  1

And the probaility is -

[tex]\frac{1}{6} X \frac{1}{7}[/tex]

[tex]= \frac{1}{42}[/tex]

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Answer:

y = -100/13

Step-by-step explanation:

To solve this equation, we can first get all the terms containing the variable y on one side of the equation and all the constant terms on the other side. We can do this by subtracting 25 from both sides of the equation:

5/13y + 25 - 25 = 0 - 25

This gives us:

5/13y = -25

Next, we can divide both sides of the equation by 5/13 to get rid of the fraction:

(5/13y) / (5/13) = (-25) / (5/13)

This simplifies to:

y = -100/13

Therefore, the solution to the equation is y = -100/13.

this is ur answer

[tex]2y = - 9 \\ y = ( - 9) - 2 \\ y = - 11[/tex]

Answer:

Step-by-step explanation:

The number of bags he can make without having any cookies left over is 4 bags.

Number of chocolate chips = 48

Number of vanilla cookies = 64

Number of raisin cookies = 100

Answer:

136

Step-by-step explanation:

The formula of the volume of a cone is v=b*h.First you need to find the diameter, simple, 6*2=12, you get the 12 because the diameter is always twice as large as the radius. Next you multiply 18*12 which gives you 136!