The American Veterinary Association claims that the annual cost of medical care for dogs averages $100, with a standard deviation of $30, and for cats averages $120, with a standard deviation of $35.

a) What's the expected difference in the cost of medical care for dogs and cats?
b) What's the standard deviation of that difference?
c) If the costs can be described by Normal models, what's the probability that medical expenses are higher for someone's dog than for her cat?
d) What concerns do you have?

Answer:

A. 67°

Step-by-step explanation:

Since AC is tangent to the circle, ∠C must be 90°.

You know all angles of a triangle should add up to 180°, so with A given as 23°, that leaves 180-90-23 = 67° for O.

Answer:

C. 28 = (2x - 1)(x)

Step-by-step explanation:

There is a rectangular swimming pool.

Width of swimming pool is x  

Length is  one less than twice the width

Area of the swimming pool is  28 sq ft.

To Find : Equation could be used to model the area of the swimming pool.

Solution:  

Since we are given that Length is one less than twice the width.

And width is x (given)

So, length = 2x-1

Area of the swimming pool is  28 sq ft.

Now ,

Formula of area of rectangle : Length*Width

⇒28= (2x-1)(x)

So,  equation used to model the area of the swimming pool: 28= (2x-1)(x)

Hence Option c is correct.

Answer:

28=(2x-1)(x)

Step-by-step explanation:

The swimming pool is rectangular in shape.

Hence the area of it is given by:

l * w

where l = length of the rectangular swimming pool

          w = width of the rectangular swimming pool

In this question it is given:

width = w = x

length = l = 2x - 1

Area = 28 sq.ft

Hence:

Area = l * w = (2x-1)(x)

28 = (2x-1)(x)

Answer:

Step-by-step explanation:

it is given that Square contains a chord of of the circle equal to the radius thus from diagram

[tex]QR=chord =radius =R[/tex]

If Chord is equal to radius then triangle PQR is an equilateral Triangle

Thus [tex]QO=\frac{R}{2}=RO[/tex]

In triangle PQO applying Pythagoras theorem

[tex](PQ)^2=(PO)^2+(QO)^2[/tex]

[tex]PO=\sqrt{(PQ)^2-(QO)^2}[/tex]

[tex]PO=\sqrt{R^2-\frac{R^2}{4}}[/tex]

[tex]PO=\frac{\sqrt{3}}{2}R[/tex]

Thus length of Side of square [tex]=2PO=\sqrt{3}R[/tex]

Area of square[tex]=(\sqrt{3}R)^2=3R^2[/tex]

Area of Circle[tex]=\pi R^2[/tex]

Ratio of square to the circle[tex]=\frac{3R^2}{\pi R^2}=\frac{3}{\pi }[/tex]

Answer:

Simon's Age = 47

Marcie's Age = 11

Step-by-step explanation:

The question is to find Simon's age and Marcie's age.

Let Simon's age be x and Marcie's age be y

Simon is 3 years more than 4 times marcie, so we can write:

x = 4y + 3

Also,

Sum of their ages is 58, so we can write:

x + y = 58

or x = 58 - y

Now, we substitute this into 1st equation and solve for y first:

[tex]x = 4y + 3\\58-y = 4y + 3\\58-3=4y+y\\55=5y\\y=\frac{55}{5}\\y=11[/tex]

We know

x = 58 - y

so,

x = 58 - 11

x = 47

So,

Simon's Age = 47

Marcie's Age = 11

Answer:

At time t = 0.408 sec diver will be at maximum height

Step-by-step explanation:

We have given equation of the height [tex]f(t)=-4.9t^2+4t+9[/tex]

We know that velocity is the rate of change of distance with respect to time

So [tex]v=\frac{df(t)}{dt}=\frac{df(-4.9t^2+4t+10)}{dt}=-9.8t+4+0=-9.8t+4[/tex]

At maximum height velocity will be zero

So [tex]-9.8t+4=0[/tex]

t = 0.408 sec

So at time t = 0.408 sec diver will be at maximum height

In this question, you're solving for d.

Solve for d:

5(-6 - 3d) = 3(8+7d)

Use the distributive property:

-30 - 15d = 3(8+7d)

-30 - 15d = 24 + 21d

Add 30 to both sides:

-15d = 54 + 21d

Subtract 21d from both sides

-36d = 54

Divide both sides by -36

d = -3/2

Answer:

d = -3/2 or -1.5

Answer:

d = -1.5

Step-by-step explanation:

5 (- 6 - 3d) = 3 (8 + 7d)

- 30 - 15d = 24 + 21d

- 15d - 21d = 24 + 30

- 36d = 54

- d = 54/36

- d = 1.5

d = -1.5

Answer: b. $22.75

Step-by-step explanation:

Given : A large pizza with no toppings costs $14.00. A large pizza with 2 toppings costs $17.50.

Let x denotes the number of toppings and y be the cost of that pizza.

Then, [tex]y=mx+c[/tex] , m= cost per topping  and c= cost of pizza without any topping.

From the given information.

c= $14

Function of cost becomes = [tex]y=mx+14[/tex]

For x= 2 and y= 17.50, we have

[tex]17.50=m(2)+14[/tex]

tex]3.50=m(2)[/tex]  [Subtract 14 from both sides]

[tex]m=\$ 1.75[/tex]  [Divide both sides by 2]

For c= 14 and m =1.75  , our function becomes.

[tex]y=1.75x+14[/tex]

Now, for x= 5

[tex]y=1.75(5)+14=8.75+14=22.75[/tex]

Hence, the cost of a pizza with 5 toppings =  $22.75

Answer:

11 sections

Step-by-step explanation:

This problem is called the circle cutting or pancake cutting problem.

Let the number of cuts or divisions by straight line = n

With this information it is possible to calculate any number of pieces or section a circle will be divided into what straight lines are drawn (cut) across the circle.

When a straight line is drawn across the circle, it divides the circle into 2 sections or regions. The nth straight lines will divide the circle into n new sections or regions, so the progression is;

         f(1) = 2

         f(2) = 2 + f(1)

         f(3) = 3 + f(2)

         .

         .

         .

         f(n) = n + f(n-1)

Therefore,

         f(n) = n + [(n-1) + f(n-2)}

               = n + n-1 + ... + 2 + f(1)

               = f(1) + ∑[tex]_{i = 2}^{n}[/tex]i

               = [tex]2 + \frac{1}{2} (n + 2) (n - 1)[/tex]

               = [tex]\frac{1}{2}(n^{2} + n + 2)[/tex]

When n = 4

              =  [tex]\frac{1}{2}(4^{2} + 4 + 2)[/tex]

              = 22/2

              = 11 sections

Answer:

The continuously compounded return of Mordice Corporation shares for the period August 1 to August 15 is closest to:______6.90%

Step-by-step explanation:

The question is incomplete. This is the complete version

The weekly closing prices of mordice corporation shares are as follows;

Date. Closing price

Ist August. 112

8 August 160

15 August. 120

Solution

The continuous compounded return of mordice corporation shares can be calculated by taking the natural log change

In(120/112)*100= 6.89% which is closest to 6.90%

Answer:

The number of children attended the fair is 1520.

Step-by-step explanation:

We are given the following in the question:

Entry fee foe children = $1.50

Entry fee foe adult = $4.00

Total number of people in fair = 2200

Total money collected = $5000

Let x be the number of children and y be the number of adults in the fair.

Then, we can write the following equations:

[tex]x + y = 2200\\1.5x + 4y = 5000[/tex]

Solving the two equations, we have:

[tex]1.5x + 1.5y = 3300\\1.5x + 4y = 5000\\\Rightarrow 2.5y = 1700\\y = 680\\x = 2200-680 = 1520[/tex]

Thus, there were 1520 children and 680 adults in the fair.

Answer with explanation:

A salesperson can use probability to get an idea of his business as using probability he can estimate his sale of the next month as well, based on the present and previous months sales.

It can help him sort issues or errors he is facing in his business as he will get a complete idea of his business using probability.

Moreover, he can forecast future sales by using a technique which involves assigning percentages or weighting benchmarks in sales cycle, so that he can estimate the expected revenue generated.

For example:

A supermarket sales person can assign probabilities to benchmarks in sale cycle as providing needs analysis (25 % probability), adding new product (50%Probability) , Remove a product ( 75 % probability), closing sale (100% Probability) . If these probabilities are large, then forecast model can be objective.

_____________________________________________________

So just like that by assigning probabilities to benchmarks, a sales person can forecast future sales

Answer:

Probability can be used to help a sales person forecast future sales best my showing the likelihood of a certain event occurring. The sales person can then plan around the events that are deemed to be the most likely to occur.

Explanation:

100%Attempt 1 Complete

Step-by-step explanation:

solve it through simultaneous equations

for fun guys : 10+6.5x=y

for game bank : 22+3.5x=y

10+6.5x=22+3.5x

3x=12

x=4

cost is same when game rentals =4

that cost= $36

For 4 games both the game stores charges the same, which is $36.

In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given that, Fun Guys game rental store charges an annual fee of $10 plus $6.50 per game rented.

Let the number if games be x.

So, total cost =10+6.50x

The Game Bank charges an annual fee of $22 plus $3.50 per game.

So, total cost =22+3.50x

Game rentals will the cost be the same at both stores

Then, 10+6.50x=22+3.50x

6.50x-3.50x=22-10

3x=12

x=4

Total money fun Guys game rental store charges 10+6.50x=36

Therefore, the same money charged by both stores is $36.

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Answer:

125%

Step-by-step explanation:

In this kind of question, we could choose any arbitrary value for the length of the side of the square.

Let’s say the square is 10m in length, a 50% increase in the length means we add 5 to the original length making the new length to be 15m.

The area of a square is L^2

The former area is 10 * 10 = 100 while the new area is 15 * 15 = 225

The percentage increase is calculated as follows:

We simply subtract the old from the new to yield 225 - 100 = 125

The percentage increase would now be :

125/100 * 100 = 125%

Answer:

Large box weighs 60 pounds and small box weighs 25 pounds

Step-by-step explanation:

Let x be the weight of large box and y be the weight of small box

The combined weight of a large box and a small box is 85 pounds.

[tex]x+y= 85[/tex]

[tex]y= 85-x[/tex]

The truck is transporting 50 large boxes and 65 small boxes. If the truck is carrying a total of 4625 pounds in boxes

[tex]50x+65y= 4625[/tex]

Solve for x  and y using both equations

[tex]y= 85-x[/tex]

[tex]50x+65(85-x)= 4625[/tex]

[tex]50x+5525-65x= 4625[/tex]

[tex]-15x+5525= 4625[/tex]

[tex]-15x= 4625-5525[/tex]

[tex]-15x=-900[/tex]

Divide both sides by -15

x=60

[tex]y= 85-x=85-60=25[/tex]

Large box weighs 60 pounds and small box weighs 25 pounds

The approximate height of the John Hancock replica is 2.33 meters.

Given that;

Willis Tower in Chicago is 1450 feet tall.

And, The John Hancock Center in Chicago is 1127 feet tall.

Let us assume that,

The approximate height of the John Hancock replica = x

Hence by using the definition of proportion, we get;

1450/3 = 1127/x

Cross multiplication,

1450x = 1127 × 3

x = 2.331

Round to the nearest hundredth;

x = 2.33

Thus, The approximate height of the John Hancock replica is 2.33 meters.

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Answer:

Ratio of Quentin new income to Sam new income is [tex]\frac{11}{12}[/tex]

So option (a) will be correct option

Step-by-step explanation:

Let Rex income is 100

Then Paul income is 40 % less than Rex income 100 - 100×0.4 = 100-40 = 60

And Quentin's income is 20 % less than Paul income

So Quentin's income  is 60 - 60×0.2 = 60-12 = 48

Sam income is 40% less than Paul income

So Sam income = 60 - 60×0.4 = 60 - 24 = 36

Now Rex give 60% income Sam

So Sam new income = 36 + 100×0.6 = 60+36 = 96

And Rex give 40% of his income to Quentin's

So Quentin's  new income = 48 + 100×0.4 = 40+48 = 88

Now ratio of  Quentin's  new income to the Sam new income [tex]=\frac{88}{96}=\frac{11}{12}[/tex]

So option (a) will be correct answer

Answer:

Step-by-step explanation:

total marbles=5+8+4+3=20

when he is drawing without replacing means red marble is drawn from 20 marbles.

Blue marble is drawn from 19 marbles.

when he is drawing with replacing means he draws one red marble from 20 marbles.Then he replaces it and draws blue marble from 20 marbles also.

We have a better chance of drawing a red and then a blue marble without replacing the first marble.

It is the ratio that shows the likelihood of a particular event happening from when many other events could also happen.

The total number of marbles = 5 + 8 + 4 +3

= 20 marbles.

P( Drawing a red marble ) = 5/20

Now draw a blue marble:

Total marbles = 20

P( Drawing a blue marble ) = 8/20

Joint probability = 5/20 * 8/20

= 0.1

Total marbles = 19

P( Drawing a blue marble ) = 8/19

Joint probability = 5/20 * 8/19

= 0.105

This means that there is a higher probability of drawing a blue marble after a red marble without replacement.

Thus we have found that we have a better chance of drawing a red and then a blue marble without replacing the first marble.

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Answer:

∠5 = 55°

Step-by-step explanation:

Since l and m are parallel lines, then ∠5 and ∠1 are same- side interior angles and are supplementary, thus

∠1 + ∠5 = 180°, that is

125° + ∠5 = 180° ( subtract 125° from both sides )

∠5 = 55°

Answer:

55 degrees.

Step-by-step explanation:

m < 2 = 180 - 125 = 55 degrees (adjacent angles).

m < 5 = m < 2 (alternate angles).

Therefore m < 5 = m < 2  = 55 degrees.

Answer:

612 feet

Step-by-step explanation:

LA is located at 330 feet ABOVE SEA LEVEL

Death Valley is located 282 feet BELOW SEA LEVEL

We let the sea level be at 0 (consider a number line).

So,

LA would be at +330 feet

and

Death Valley would be at -282 feet

The elevation change between the two would be the difference:

330 - (-282) = 330 + 282 = 612 feet

The difference in elevation = 612 feet

Answer:

D

Step-by-step explanation:

Answer:

Option C.

Step-by-step explanation:

Given information: In triangle ABC, ST║AC, SB=10 ft, BT=9 ft and CT=2.7 ft.

Triangle proportionality theorem: If a line segment parallel to a side of a triangle then the line segments divides the remaining sides proportionally.

Using triangle proportionality theorem we get

[tex]\dfrac{SA}{SB}=\dfrac{CT}{BT}[/tex]

[tex]\dfrac{SA}{10}=\dfrac{2.7}{9}[/tex]

On cross multiplication we get

[tex]9\times SA=2.7\times 10[/tex]

[tex]9SA=27[/tex]

Divide both sides by 9.

[tex]SA=3[/tex]

The length of SA is 3ft.

Therefore, the correct option is C.

Answer: C on edg.

Step-by-step explanation:

Answer:

No, she is not correct as her speed is 0.25 miles per minute.

Step-by-step explanation:

Given:

Ratio of distance  to time taken is 15 : 60.

Distance is in miles and length of time is in minutes.

We know that, average speed is given as the ratio of the distance traveled and the length of the time taken.

So, the ratio above is nothing but the average speed of Reese for cycling.

Thus, average speed of Reese is given as:

[tex]\textrm{Average speed}=\frac{Distance}{Time}\\\\\textrm{Average speed}=\frac{15}{60}\ miles\ per\ min\\\\\textrm{Average speed}=\frac{1}{4} = 0.25\ miles\ per\ min[/tex]

Therefore, the average speed of Reese is 0.25 miles per minute which is not equal to the one mentioned by Reese as 4 miles per minute.

So, Reese conclusion of her average speed is incorrect. It's not 4 but the reciprocal of 4 which is 0.25 miles per minute.

Answer:

The probability of given event = [tex]\frac{1}{15}[/tex]

Step-by-step explanation:

Ten slips of paper labeled from 1 to 10 are placed in a hat. The first slip of paper is not replaced before selecting the second slip of paper.

We have to find the probability of selecting a number less than 3 and then a number greater than 4.

Probability of an event = [tex]\frac{number of favourable events}{total number of events}[/tex]

The probability of selecting number less than 3 = [tex]\frac{2}{10}[/tex] = [tex]\frac{1}{5}[/tex]

The probability of selecting number greater than 4 = [tex]\frac{3}{9}[/tex] = [tex]\frac{1}{3}[/tex]

Total probability = [tex]\frac{1}{5}\times \frac{1}{3}[/tex] = [tex]\frac{1}{15}[/tex]

Answer:

90k

Step-by-step explanation:

Taxable income is calculated by subtracting certain eligible deductions from gross income. In this scenario, a $10,000 investment in a 401k reduces the individual's taxable income from a $100,000 salary to $90,000.

When determining taxable income, it's important to subtract certain eligible deductions from the gross income. In this case, the individual earns a salary of $100,000 and invests $10,000 in a 401k plan. This investment is a pre-tax contribution, which means it lowers the amount of income that is subject to tax. Therefore, by investing $10,000 into a 401k, the individual's taxable income would be reduced to $90,000. So the correct answer is $90,000.

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Answer:

The total number of the games that the eagles played is 12

Step-by-step explanation:

Given:

The eagles soccer team win 40% of the games

Number games won last year = 12

To Find:

Total number of the games that the eagles played = ?

Solution:

Let the total number of games eagles played be X

Then

according to the question,

40% of X = 12

[tex]\frac{40}{100} \times X  = 12[/tex]

[tex]X = 12 \times \frac{100}{40}[/tex]

[tex]X = \frac{1200}{40}[/tex]

X = 30

The Eagles played a total of 30 games last year.

To find the total number of games that the Eagles played last year, we can set up a proportion using the information given. Since the Eagles won 40% of their games, we can say that 40% is equal to 12 games. Let x be the total number of games played. The proportion would be: 40/100 = 12/x. Cross multiplying gives us 40x = 1200. Dividing both sides by 40, we find that x = 30. Therefore, the Eagles played a total of 30 games last year.

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Answer:

Step-by-step explanation:

1.

3a+7=4a

a=7

2b=b+11

b=11

2.

y=101°

101+x=180

x=180-101=79°

3.

x+6=11

x=11-6=5

y-7=10

y=10+7=17

Answer:

Step-by-step explanation:

1. Obviously, the figure is rotated CCW by 90°. If the center of rotation were the center of the figure, the image would be in the same quadrant as the pre-image. It is in the quadrant located 90° CCW from the original, so the center of rotation must not be the center of the image. That leaves one viable answer choice.

__

2. The line joining a point and its reflection is always perpendicular to (and bisected by) the line of reflection.

__

3. The theorem tells you a point on the perpendicular bisector is equidistant from the endpoints of the segment bisected. If the surveyor is to apply that theorem, he needs a point equidistant from the original two stakes.

__

4. The square has four (4) lines of symmetry: through the parallel side midpoints, and through opposite vertices. The corresponding lines would be ...

The appropriate choice is ...

  x + y = 4

Answer:

47.75 %

Step-by-step explanation:

It is a very well known issue that in Standard Normal Distribution  porcentages of all values fall according to:

μ  +   σ       will contain a 68.3 %

μ   +  2σ    will contain  a  95.5 %

μ  +  3σ      will contain  a  99.7 %

However it is extremely  importan to understand that the quantities above mentioned are distributed simmetrically at both sides of the mean, that is,  the intervals are:

[  μ - 0,5σ ;  μ  + 0,5σ ]

[  μ -   1σ ;  μ  +      1σ ]

[  μ -   1.5σ ;  μ  +   1.5σ ]

So we have to take that fact into account when applying the empirical rule. Then

With   mean    μ  =  47       and  σ = 10   is equal to say

values between    47    and     57    (  μ  +   σ  )  we are talking about the second interval, but just half of it.

Then the  approximate porcentage of light-bulb replacement requests is

95.5 /2   =  47.75 %

Answer:

2.4 hours

Step-by-step explanation:

Distance = rate * time

One train travels at a rate of 70 mph for t hours.  This means that the distance it travels is 70t.

The other train travels at a rate of 90 mph for t hours.  This means that the distance it travels is 90t.  

The total distance they cover together is equal to 384 miles; therefore,

70t + 90t = 384 and

160t = 384 so

t = 2.4 hours

Answer:

  1

Step-by-step explanation:

The centroid is the average of the coordinates of the three vertices. If you know two vertices (A and B) and the centroid (Q), then the third vertex (C) is ...

  C = 3Q -A -B

It has only one possible location.

Given the coordinates of two vertices and the centroid, the third vertex can be located by solving a system of linear equations derived from the centroid's coordinates. This results in only one possible location for the third vertex.

To find the number of possible locations for the third vertex of a triangle given two vertices and the centroid, we need to use the properties of the centroid. The centroid of a triangle is the point where the three medians intersect and it is located 1/3 of the way from each side towards the opposite vertex.

If we denote the vertices of the triangle as (x1, y1), (x2, y2), and (x3, y3), and the centroid as (Gx, Gy), the coordinates of the centroid can be calculated as:

Gx = (x1 + x2 + x3) / 3

Gy = (y1 + y2 + y3) / 3

Since we know the coordinates of the centroid (Gx, Gy) and two vertices (x1, y1), (x2, y2), we can set up the following system of equations:

Solving these equations for x3 and y3 gives:

x3 = 3Gx - x1 - x2

y3 = 3Gy - y1 - y2

Therefore, there is only one possible location for the third vertex given the two vertices and the centroid.