A certain instructor asked the girls in his class to estimate his weight. Their responses were
190, 230, 105, 180, 130, 160, and 170 pounds.
a. Compute the sample mean.
b. What is the sample median?

Answer:

y = -x+5

Step-by-step explanation:

Use point slope formula to find the equation of the line

First find the slope: (-1-4)/(6-1) = -5/5, slope = -1

Then, use the formula: y - y1 = m(x - x1)

y - 4 = -1(x - 1)

y - 4 = -x+1

y = -x + 5

4.1.1 and 4.1.3 are discrete variables and 4.1.2 is a continuous variable.

What are discrete and continuous variables?

Discrete variables are those that have distinct, countable values. A continuous variable can be assigned to any value that falls inside a range, which has an infinite number of possible values.

4.1.1 "I am fifty years old"

It is a discrete variable because age is represented in whole numbers.

4.1.2 "I can drink 400.5 ml of juice in a minute"

It is a continuous variable because the amount of juice is consumed every minute so, we can obtain values even in fraction.

4.1.3 "I have 2 brothers and 1 sister"

It is a discrete variable because the given value is countable.

Hence, 4.1.1 and 4.1.3 are discrete variables and 4.1.2 is a continuous variable.

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Answer:

102

Step-by-step explanation:

Answer: The probability that a customer wins a prize 8.3%

Step-by-step explanation:

First off, the dice has twelve sides and only of the sides, 9, will allow a customer to win.

this means that there is a 1/12 chance that the customer will win a prize.

We can rewrite this into a decimal: 0.0833

and then to a percentage rounded to the nearest tenth: 8.3%

The probability that a customer wins a prize is 8.3% to the nearest tenth.

Probability is simply the possibility of getting an event. Or in other words, we are predicting the chance of getting an event.

The value of probability will be always in the range from 0 to 1.

Given that,

A clothing store has each customer roll a 12-sided die with faces numbered 1−12 to win a free T-shirt.

Customers who roll a 9 win.

Total possible outcomes = 12

Number of outcomes which results in a win = 1

Probability that a customer wins = 1/12

                                                       = 0.08333

                                                       = 8.3%

Hence the required probability is 8.3%.

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Answer:

okay have a nice day haha

Answer: E

Step-by-step explanation: Since this is a special right triangle(45,45,90), you know that the ratios of the leg to the hypotenuse is 1:1:sqrt2. 15 sort root two hold true to that rule and is the right answer.

Answer:

7x-43=5x+43

7x-5x=43+43

2x=86

x=86/2

x=43

A line's point slope form equation is y - y1 = m. (x – x1). Consequently, y - 0 = m(x = 0), or y = mx, is the equation of a line passing through the origin with a slope of m.

Finding the slope between two points on a line and then solving for the y-intercept in the slope-intercept equation y=mx+b allow us to build an equation for that line.

The slope of the line passing through these points,

[tex]m=\frac{y2-y1}{x2-x1} \\\\m=\frac{7-9}{0} =infinity[/tex]

infinity slope means y axis.

The equation of line will be x=0.

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Leonard gave the correct value of approximate average rate of change of function.

What is a function?

In mathematics, a function is an expression, rule, or law that specifies the relationship between an independent variable x and a dependent variable y.

The average rate of change of  function means the typical rate at which one quantity is changing in respect to another. A method that determines the amount of change in one item divided by the corresponding amount of change in another is known as an average rate of change function.

The formula for average rate of change of  function in the interval [a,b] is

[tex]\frac{f(b) - f(a)}{b-a}[/tex].

We are asked to find the rate of change when x = -3 to 6

From graph

when x = -3 , y = -2

when x = 6, y = 2

So average rate of change of function = [tex]\frac{f(6) - f(-3)}{6-(-3)} = \frac{2 - (-2)}{9} = \frac{4}{9}[/tex]

Therefore Leonard gave the correct value of approximate average rate of change of function.

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The total length of the bolt should be 21/8 inches.

The study and application of numbers in all other fields of mathematics are covered in the area of mathematics known as arithmetic operations. Addition, subtraction, multiplication, and division are included in the basic operations.

Given the thickness of plate 1 = 7/8 inches

the thickness of plate 2 = [tex]1\frac{1}{4}[/tex] inches = 5/8 inches

total thickness of both plates = 7/8 + 5/4

5/4 is equaivalent to (5*2)/(4*2) = 10/8

the total thickness of both plates = 7/8 + 10/8

the total thickness of both plates = 17/8 inches

and the bolt must be at least 1/2 inch longer

total length of bolt = 17/8 + 1/2

convert 1/2 to the same denominator as 17/8

1/2 = (1*4)/(2*4) = 4/8

total length of bolt = 17/8 + 4/8

the total length of the bolt =  21/8 inches

Hence the bolt should be 21/8 inches longer.

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Answer:100 or it just means 10 times

Step-by-step explanation: you need to learn the angles when the number are put on each side and then your answer will come!

Answer:

D

Step-by-step explanation:

So the ratio is 8:6 right now and they want to sell 10 each. I can tell you now it's gonna change because neither 6 nor 8 goes into 10 evenly. Now to find out what it'll be

So currently, you found out Terrence has 36 and Jim has 48

So each is going to sell 10. That means...

Jim will have 38 and Terrence will have 26

[tex] \frac{38}{26} [/tex]

Now we'll just simplify until we can't anymore

[tex] \frac{38}{26} = \frac{19}{1 3} [/tex]

19 and 13 are prime numbers... that's the most I can go

They reach their location at 9:24 the next morning.

The relative speed is the net speed of two different objects with respect to each other.

If two objects move in the same direction we take the difference between their speeds.

If two objects move in the opposite direction we take the sum of their speeds.

We can utilize the following parameters in our calculation based on the question,

Time = 4 pm

Distance = 64 km

Calculate how long it took the father to ride his horse and the son to walk the first 32 miles.

Time = Distance / (Difference between rates of father and son)

Time = 32 km / (8 km/h - 3 km/h)

Time = 32 km / 5 km/h

Time = 6.4 hours

Determine how long it will take the father to walk the final 32 miles and the son to ride the horse.

Time = Distance / (Difference in Speed)

Time = 32 km / (8 km/h - 4 km/h)

Time = 32 km / 4 km/h

Time = 8 hours

Therefore,

Total time = 6.4 hours + 8 hours + 3 hours break + 4 pm is 9:24 am the next day.

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Answer:

The polygons are similar.

Step-by-step explanation:

The polygons are similar due to the SAS Similarity Theorem.

Hope this helped! :)

Answer:

150 units (Option C)

Step-by-step explanation:

Perimeter of rectangle = Perimeter of triangle

= {2 × (Length + Width)} = Sum of all three sides

= {2 × [(2x) + (x + 12)]} = [(4x) + (2x) + (x + 3)]

The parenthesis are expanded using the Distributive Law:
= {2 × [2x + x + 12]}  = [4x + 2x + x + 3]

= {2 × [3x + 12]} = [7x + 3]
= 6x + 24 = 7x + 3

Bring all the like terms together and isolate x:

= 24 - 3 = 7x - 6x

= 21 = x

∴x = 21

Substitute this calculated value of x to determine the perimeter of rectangle:

6x + 24

= 6(21) + 24

= 126 + 24

= 150 units

∴Option C

The expression when evaluated is 46552

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

5,819 x 8.

Using the standard algorithm, we have:

5,819 x 8 = (5800 + 19) * 8

Open the brackets

So, we have the following representation

5,819 x 8 = 5800* 8 + 19 * 8

Evaluate

5,819 x 8 = 46400 + 152

So, we have

5,819 x 8 = 46552

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The function has no vertical asymptotes and horizontal asymptotes are at y = 0.

A straight line that continuously approaches a certain curve without ever meeting it is an asymptote. In other words, an asymptote is a line that a curve travels toward as it approaches infinity.

A straight line that serves as the asymptote of the curve y = f(x) or, in its implicit form, f(x,y) = 0, where the distance between the two lends to zero as the points on the curve approach infinity.

Given function,

f(x) = -7/(x² + 4)

in the given function the degree of the denominator is more than the numerator so The horizontal asymptote lies at y = 0 because, as we can see, the degree of the numerator is less than the denominator.

and there will be no vertical asymptote.

The graph of the equation is attached.

Hence horizontal asymptote lies at y = 0 and ni vertical asymptote.

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It is given that 2/5 of all patients admitted to ward 17.

Remining fraction is:

So 3/5 of patients admitted to ward 18.

Since 1/6 of all patients moved to another ward, and the reminder assigned as before, the initial fraction becomes:

Now, 3/5 of the new fraction, 5/6 is admitted to ward 18.

That is:

This is half of the patients.

The difference of the number of the patients admitted to ward 17 is the same fraction of the number of infected:

So the difference of patients is 4.

The simplification of the given estimate above would be = 3 21/40

To simply a mixed fraction, the mixed fraction should be converted to a single fraction. That is;

3⅝ = 29/8

Use the newly converted fraction to solve:

= 29/8 -1/10

Fine the Lowest common denominator = 49

= 145-4/40

= 141/40

= 3 21/40 ( convert to a mixed fraction)

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Answer:

A(L) = - L²  + 215L

Domain
0 < L < 215

or

(0, 215) in interval notation

Step-by-step explanation:

Let  L represent the length and W the width

Perimeter of a rectangle = 2(L+W) and is given as 430 meters

Therefore 2(L + W) = 430

L + W = 430/2
L + W = 215

W = 215-L

The area A is given by L x W

Substituting for W in terms of L this becomes

A = L x(215 - L)

A = 215L - L²

which can be expressed as a function of in the form
A(L) = 215L - L² or in standard form(highest degree first)

A(L) = - L²  + 215L

The domain of this function are the values of L which result in a defined , real value for A

Without restrictions, the domain for L is -∞ < L < ∞. However real world facts coming into play

1. Area cannot be zero
So A(L) > 0 (upper bound on area)

-L² + 215L > 0

-L² > - 215L Move 215L to right side

L² < 215L   (dividing by -1 changes signs of variables and also inequality)

L < 215      (divide by L both sides)

2. Length cannot be negative
So lower bound on L is L > 0

Together the domain is
0 < L < 215

or

(0, 215) in interval notation

Answer:

[tex]x=42; \ y=14\sqrt{5}.[/tex]

Step-by-step explanation:

1. if the angles of the given triangle are 30-60-90°, then

2. y=0.5*28√5=14√5;

[tex]3. \ x=28\sqrt{5}*sin(60)=28\sqrt{3}*\frac{\sqrt{3} }{2}=42.[/tex]

4. finally, x=42; y=14√5.

Answer:

Length = 10cm, Width = 9 cm

Step-by-step explanation:

Let's call the amount that both the length and width are increased by "x". So, the new length is 5 + x and the new width is 4 + x.

The original area of the rectangle was 5 * 4 = 20 cm2.

The new area of the rectangle after the increase is (5 + x) * (4 + x) = 20 + 70 + 2x^2.

Expanding the right-hand side, we have 20 + 70 + 2x^2 = 90 + 2x^2.

Equating the two areas, we get:

20 + 70 + 2x^2 = 90 + 2x^2

Subtracting 2x^2 from both sides:

20 + 70 = 90

Subtracting 20 from both sides:

70 = 70

So x^2 = 50 / 2 = 25.

Taking the square root of both sides, we get:

x = 5

So the length of the longer rectangle is 5 + x = 5 + 5 = 10 cm, and the width is 4 + x = 4 + 5 = 9 cm.

Answer:

  T〈-7,0〉

Step-by-step explanation:

You want a description of the transformation of triangle ABC to triangle A"B"C".

∆A"B"C" has the same orientation as ∆ABC, so no reflection is involved (eliminates choice B).

Point A" is 7 units to the left of point A, so the translation is 7 units left (and no units up or down).

The transformation is ...

  [tex]\boxed{T_{\langle-7,0\rangle}}[/tex]

Answer:

- 8.5

Step-by-step explanation:

The two values of y such that the barn is 50 yards from the well

The length of line in an ordered pair is calculated using the formula

d = √{(x₂ - x₁)² + (y₂ - y₁)²}

where

d = distance between the points

x₂ and x₁ = points in x coordinates

y₂ and y₁ = points in y coordinates

distance between points  (-1, 1) and (-1,, y) is calculated to be 50 yards and hence we solve for y

d = √{(x₂ - x₁)² + (y₂ - y₁)²}

50 =√{(-1 - -1)² + (1 - y)²}

50 =√{ (1 - y)²}

2500 = (1 - y) (1 - y)

2500 = 1 - 2y + y²

y² - 2y - 2499 = 0

solving the quadratic equation gives

y = 51 OR -49

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Answer: 1. 27/72 = 3/8,  2. 24/40 = 3/5,  3. 6/42 = 1/7

Step-by-step explanation:

1. 27/72 divided by 9/9 equals 3/8.

2. 24/40 divided by 8/8 equals 3/5.

3. 6/42 divided by 6/6 equals 1/7.

The m∠1 and m∠2 which are linear pairs of angles are 72° and 108°.

We know when a transversal intersects two parallel lines at two distinct points,

Two pairs of interior and alternate angles are formed such that the measure of interior angles are same and the measure of alternate angles is also the same.

We know that the sum of linear pair of angles is equal to 180°.

therefore, From the given information, (x + 36)° + 3x° = 180°.

4x + 36° = 180°.

4x = 144°.

x = 36°.

So, m∠1 = 72° and m∠2 = 108°.

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Answer:

Part A: What percentage of the survey respondents do not like both hamburgers and burritos? (2 points)

25.6%. 54 out of 205 respondents do not like both hamburgers and burritos. 54/205 = 0.256 or 25.6%.

Part B: What is the marginal relative frequency of all customers that like hamburgers? (3 points)

50.2%. 110 out of 205 respondents like hamburgers. 110/205 = 0.502 or 50.2%.

Part C: Use the conditional relative frequencies to determine which data point has strongest association of its two factors. Use complete sentences to explain your answer. (5 points)

The data point with the strongest association between its two factors is that 29 out of 110 respondents who like hamburgers also like burritos. This is a conditional relative frequency of 26.4%, which is higher than any other combination of the two factors. This suggests that the respondents who like hamburgers are more likely to also like burritos than any other combination of the two factors.

Step-by-step explanation:

Answer: Vegetable consumption per month is 17.33 pounds and fruits consumption per month is 10.47 pounds.

Step-by-step explanation: