Diego’s history teacher writes a test for the class with 30 problems. The test is worth 50 points and has two types of problems: multiple choice worth 1 point each, and short answer problems worth 3 points each. How many short answer questions are in the test? Explain or show you reasoning. Diego’s history teacher writes a test for the class with 30 question. The test is worth 50 points and has two types of questions: multiple choice worth 1 points each, and short answer problems worth 3 points each. How many short answer questions are in the test? Explain or show you reasoning

Option B. Area under the curve. In a density curve, the proportion of data is represented by the area under the curve.

The area under the curve represents the proportion of data points that fall within a certain range of values, and the height of the curve at any given point represents the relative frequency or density of data points at that value. The total area under the curve is equal to 1, indicating that the sum of the proportions of data points in all possible intervals is equal to 100%.

It's important to note that the total area under the curve is equal to 1, indicating that the sum of the proportions of data points in all possible intervals is equal to 100%. This means that the density curve provides a complete picture of the distribution of the data, and the shape of the curve can be used to make inferences about the distribution, such as whether it is symmetrical, skewed, bimodal, etc.

To learn more about density curve please click on below link.

https://brainly.com/question/13534411

#SPJ4

Answer: 5

Step-by-step explanation:

n = the numerator of the fraction

[tex]\cfrac{p}{p-2}~~ = ~~\cfrac{n}{4-p^2}\implies \cfrac{p(4-p^2)}{p-2}~~ = ~~n\implies \cfrac{p(-1)(p^2-4)}{p-2}=n \\\\\\ \stackrel{ \textit{difference of squares} }{\cfrac{p(-1)(p^2-2^2)}{p-2}}=n\implies \cfrac{-p(p-2)(p+2)}{p-2}=n \\\\\\ \boxed{-p(p+2)=n}\hspace{5em}\cfrac{-p(p+2)}{4-p^2}[/tex]

The cost of one plum in pence is 9p. The cost of 1 lime in pence is 12p.

Comparing the cost plum is cheaper.

The cost of 1 plum can be found by dividing the total cost of 7 plums by 7:

63 p / 7 = 9 p

Therefore, the cost of 1 plum is 9 p.

The cost of 1 lime can be found by dividing the total cost of 5 limes by 5:

60 p / 5 = 12 p

Therefore, the cost of 1 lime is 12 p.

Comparing the costs of 1 plum and 1 lime, we see that 1 plum costs 9 p and 1 lime costs 12 p. Therefore, the plum is cheaper per item.

To know more about Cost:

https://brainly.com/question/30147827

#SPJ4

____The given question is incomplete, the complete question is given below:

A grocery shop sells plums and limes. 7 plums cost 63 p. 5  limes cost 60p a) Work out the cost of  1 plum, in pence (p).

b) Work out the cost of 1 lime, in pence (p).

c) Which type of fruit is cheaper per item?

If Johnny sets his watch 2 days ado then after two days watch will behind 18 seconds.

Addition is a basic mathematical operation that combines two or more numbers to give a total or sum. It is one of the four elementary arithmetic operations, along with subtraction, multiplication, and division. The operation involves adding or combining the values of two or more numbers, which are called addends, to produce a new value, which is the sum or the total.

If Johnny last set his watch 2 days ago,

we can substitute d = 2 into the equation:

s = d + 16

To find out how many seconds behind his watch is.

s = d + 16

s = 2 + 16

s = 18

So, Johnny's watch is 18 seconds behind if he last set it 2 days ago.

To know more about addition check:

https://brainly.com/question/28222269

#SPJ9

The cost of one carrot is £1.6 and cost of one radish is £3.1 according to the quadratic equations we formed by the given data.

Here the cost of 4 kilo grams of radish and 1 and half kilo gram of carrot is £14.80.

Now, form a quadratic equation from the given data:

4[tex]\alpha[/tex]+1.5[tex]\beta[/tex]=14.80 --------(1)

Also given that the cost of 3kg of radishes and 2kg of carrots is £12. 50.

Similarly form a equation with that data:

3[tex]\alpha[/tex]+2[tex]\beta[/tex]=12.50 ----------(2)

Now simplify both equation 1 and 2

4[tex]\alpha[/tex]+1.5[tex]\beta[/tex]=14.80

3[tex]\alpha[/tex]+2[tex]\beta[/tex]=12.50

--------------------

4(3[tex]\alpha[/tex]+2[tex]\beta[/tex]=12.50)

3(4[tex]\alpha[/tex]+1.5[tex]\beta[/tex]=14.80)

-----------------------

12[tex]\alpha[/tex]+8[tex]\beta[/tex]=50

-(12[tex]\alpha[/tex]+4.5[tex]\beta[/tex]=44.4)

----------------------

3.5[tex]\beta[/tex]=5.6

[tex]\beta[/tex]=1.6

Therefore cost of one carrot is £1.6.

Now substitute the value is equation 1, we get:

4[tex]\alpha[/tex]=12.4

[tex]\alpha[/tex]=£3.1

Therefore cost of one radish is £3.1.

Learn more about quadratic equations:

https://brainly.com/question/19037377

#SPJ4

By simplifying the ratio and adding the fractions, we found that 1/7 of the beads are purple pyramids.

Ratios are used to compare two quantities or values. They are often expressed in the form of a fraction or as a percentage.

The given ratio of purple pyramids to yellow spheres is 1:6. This means that for every 1 purple pyramid, there are 6 yellow spheres. We can express this ratio as a fraction:

Purple pyramids : Yellow spheres = 1 : 6

This can be simplified by dividing both sides by 6:

1/6 Purple pyramids : 1 Yellow sphere = 1/6 : 1

Now, we can add the two fractions to get the total fraction of pyramids in the necklace:

1/6 + 1 = 7/6

This means that out of every 7 beads, 1 is a purple pyramid. We can express this as a fraction:

1/7 of the beads are purple pyramids.

So, the fraction of the beads that are pyramids is 1/7.

To know more about ratio here.

https://brainly.com/question/13419413

#SPJ4

Complete Question:

A necklace is made from purple pyramids and yellow spheres in a 1:6 ratio . What fraction of the beads are pyramids?

The solution to the inequality are the region in the shaded area

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

Y >1/2x-1

Y ≥-3/4x-6

Represent properly

y > 1/2x - 1

y ≥ -3/4x - 6

Next, we make a plot of the system to determine the solution

The shaded area in the plot represent the solution to the inequality

In this case, one of the coordinates in the shaded area has a coordinate of (-4, -3)

Read more about inequality at

brainly.com/question/25275758

#SPJ1

Circle A is larger.

Circle A's radius is 58 cm and circle B's radius is 57 cm.

A circle is a two-dimensional figure with a radius and circumference of 2πr.

We have,

Area of a circle = πr²

Circumference of a circle = 2πr

Circle A:

Area of a circle = 10562.96

πr² = 10562.96

r² = 3364

r = 58 cm ____(1)

Circle B:

Circumference = 357.96

2πr = 357.96

r = 357.96/6.28

r = 57 cm ______(2)

From (1) and (2)

58 > 57

So,

Circle A is larger.

Thus,

Circle A is larger.

Learn more about circle here:

https://brainly.com/question/11833983

#SPJ1

The value of x is 18 and the measure of each side is:

QR = RS = QS = 29

An equilateral triangle is a triangle that has all its sides equal in length. Since the three sides are equal therefore the three angles, opposite to the equal sides, are equal in measure. Therefore, it is also called an equiangular triangle, where each angle measure 60 degrees.

Now, According to the question:

Angle QRS is an equilateral triangle.

QRS is an equilateral triangle, thus all the three sides of the given triangle will be equal.

we have

QR = 2x - 7___(1)

RS = 5x - 61 ___(2)

QS = 11 + x_____(3)

Now, As all the sides of the triangle are equal, therefore

QR = RS = QS

⇒QR = RS

⇒2x - 7 = 5x - 61

⇒ -7 + 61 = 5x - 2x

⇒ 54 = 3x

⇒ x = 18

Put the value of x in above equations:

Thus, the measure of

QR = 2(18) - 7=29,

RS = 5(18) - 61 = 29 and

QS = 11 + 18 = 29.

Learn more about Equilateral Triangle at:

https://brainly.com/question/3461022

#SPJ4

Answer:

Step-by-step explanation:

The volume of the three tennis balls combined is approximately 4.88 cubic inches. The volume of the packaging cylinder is approximately 50.33 cubic inches. Thus, the volume of the three tennis balls is about 9.7% of the volume of their packaging cylinder.

To calculate this, we can use the formula for the volume of a sphere (V = 4/3 x π x r3) and the formula for the volume of a cylinder (V = π x r2 x h).

The radius of each tennis ball is half the diameter, or 1.35 inches. So, the volume of each tennis ball is 4/3 x π x (1.35)3 = 4.88 cubic inches.

The radius of the cylinder is the same as the diameter of each tennis ball, or 2.7 inches. The height of the cylinder is 8.1 inches. So, the volume of the cylinder is π x (2.7)2 x 8.1 = 50.33 cubic inches.

The volume of the three tennis balls is 4.88 x 3 = 14.64 cubic inches. The volume of the packaging cylinder is 50.33 cubic inches. Thus, the volume of the three tennis balls is 14.64 ÷ 50.33 = 0.097 = 9.7% of the volume of their packaging cylinder.

The missing term in the equation is n = -2

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

Substituting the values in the equation , we get

Let the missing term be represented as n

-2x + 18 = nx + 18

Subtracting 18 on both sides of the equation , we get

-2x = nx

Divide by x on both sides of the equation , we get

n = -2

Therefore , the missing term is n = -2

Hence , the equation is n = -2

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ1

The amount (present value) that Emma borrowed from Dixons Dynamite Deals (DDD) to repay after 10 years with a one-time payment of $80,000 at 14/6% compounded interest per annum is not more than $20,475.94.

Step-by-step explanation:

To find out how much Emma borrowed from Dixons Dynamite Deals (DDD), we can use the formula for the future value of a loan with compound interest:

Future Value (FV) = Principal Amount (P) * (1 + r)^n

Where:

P = Principal amount (the amount borrowed)

r = Interest rate per period (in decimal form)

n = Number of periods

In this case:

Future Value (FV) = $80,000 (the payment Emma will make after 10 years)

Interest rate (r) = 14.6% per annum = 0.146 (in decimal form)

Number of periods (n) = 10 years

Now, let's calculate the principal amount (P):

$80,000 = P * (1 + 0.146)^10

Now, let's solve for P:

P = $80,000 / (1.146)^10

P ≈ $80,000 / 2.97804

P ≈ $26,874.94

So, Emma borrowed approximately $26,874.94 from Dixons Dynamite Deals (DDD) to start her cupcake business.

Please mark as Brainliest

The error that Louise made in her model is that "the small arrows should all end in the same place as the large one.

What is error model?

Error modelling is used to describe the variability in how well a parameter describes the data.

The error that Louise made in her model is that "the small arrows should all end in the same place as the large one.

" The model as described shows four small arrows going from 4 to 8, 8 to 12, 12 to 16, and 16 to 20, respectively, and one large arrow going from 0 to 20. Since the expression is 20 divided by 4, the model should show four equal parts from 0 to 20, and each part should have a length of 5.

The arrows should start at the beginning of each part and end at the end of each part, resulting in four equal segments.

To know more about error visit,

https://brainly.com/question/14467769

#SPJ1

Answer:feet occurs most often. Mick recorded the lengths of 10 Steller sea lions.

Step-by-step explanation:feet occurs most often. Mick recorded the lengths of 10 Steller sea lions.

The value of x is 8 by using the concept of similar shapes and angles.

When one triangle can be generated from the other by equally scaling, the two triangles are said to be similar. The ratio of any two pairs of comparable sides of similar shapes is said to be equal to the ratio of the sides of any two similar shapes. The similarity of the two shapes indicates that all related angle pairs and sides are equal and proportionate.

From the given information, equating the similar sides in order to determine the unknown side is expressed as follows;

24/(3x+6) =  32/40  

Cancel the common factor (3) from the left-hand side

8/(x + 2) = 32/40

Cancel the common factor (8) from the right-hand side.

8/(x+2) =  4/5

Cross multiply

4x + 8 = 40

4x = 40 - 8

4x = 32

x = 32/4

x = 8

Learn more about similar angles and shapes here:

https://brainly.com/question/28769265

#SPJ1

Answer:

Reflection Paper on "Freedom Riders"

Ankit Mishra

title movie

freedom riders

instructions create a reflection paper that summarize the documentary and how brougth about social changes and lead to the Civil rigths act of 1964

please help me

2,3 pages

Please read the instructions please I need your help watch the movie and the instructions

Reflection Paper on "Freedom Riders" Documentary

The "Freedom Riders" is a powerful documentary that recounts the story of a group of civil rights activists who rode buses across the American South in 1961 to challenge the segregated public transportation system. The film provides a vivid and moving account of their journey and the challenges they faced along the way, from beatings and arrests to bombings and arson attacks. Through interviews with surviving freedom riders and archival footage, the film sheds light on the bravery and determination of these activists and the impact they had on the civil rights movement.

The freedom riders were inspired by the nonviolent protest movement led by Dr. Martin Luther King Jr. and other civil rights leaders. They believed that segregation was a moral wrong and that they had a duty to resist it through nonviolent means. Despite the danger they faced, the freedom riders refused to back down, putting their lives on the line for the cause of justice and equality.

The bravery of the freedom riders had a profound impact on the civil rights movement. Their actions galvanized support for the cause and drew national attention to the issue of segregation. The freedom rides sparked a wave of protests and civil disobedience across the South, and helped to build momentum for the passage of the Civil Rights Act of 1964. This landmark legislation banned segregation in public places and made it illegal to discriminate against someone on the basis of race, color, religion, sex, or national origin.

The "Freedom Riders" documentary serves as a powerful reminder of the sacrifices made by those who fought for civil rights in the United States. It highlights the courage and determination of the freedom riders and the impact they had on the country. It is an important film that teaches us about the past and the struggles of those who fought for justice and equality.

In conclusion, the "Freedom Riders" documentary is a powerful reminder of the sacrifices made by those who fought for civil rights in the United States. It highlights the bravery and determination of the freedom riders and the impact they had on the civil rights movement. The film serves as a testament to the power of nonviolent protest and the importance of standing up for what is right, even in the face of opposition. The lessons of the freedom riders should inspire us all to continue working towards a more just and equal society.

Ankit Mishra

3cos²∅ (1+tan²∅) = 3

This equation involves trigonometric functions and can be simplified using trigonometric identities.

Starting with the right-hand side of the equation, we have 3. On the left-hand side, we have the expression 3cos^2(θ)(1 + tan^2(θ)).

We can simplify the expression as follows:

cos^2(θ) = 1 - sin^2(θ)

and

tan^2(θ) = sin^2(θ) / cos^2(θ)

Substituting these identities into the expression on the left-hand side, we get:

3(1 - sin^2(θ))(1 + sin^2(θ) / (1 - sin^2(θ))

Expanding the product and simplifying, we get:

3

Thus, the equation is true and holds true for all values of θ.

The mean would be 35 feet.

The mean tells us that the typical throw of the ball results in a distance of approximately 3.5 feet.

what is Mean?

In arithmetic, mean is the sum of all the added values of all the data in a set divided by the number of data in the set.

To find the mean of the distances, we need to calculate the sum of all the distances and divide by the total number of distances:

(20+25+25+31+33+34+41+41+45+50+56+67) / 12 = 425 / 12 = 35.42

Rounding to one decimal place, we get the mean distance of approximately 3.5 feet.

However, it's worth noting that the stem-and-leaf plot shows some variability in the distances, with some throws going as far as 6.7 feet and some as short as 2 feet.

So while the mean can provide us with a measure of central tendency, it doesn't tell the whole story about the distribution of the distances.

Therefore, The mean would be 35 feet. The mean tells us that the typical throw of the ball results in a distance of approximately 3.5 feet.

To know more about mean visit,

https://brainly.com/question/1136789

#SPJ1

Answer:

Y=3x+2

Graph the line using the slope and y-intercept or two points

Slope: 3 Y-intercept: (0,2)

Point 1: (0,2) Point 2: (1,5)

-4x+2y=8

Graph the line using the slope and y-intercept or two points

Slope: 2 Y-intercept: (0,4)

Point 1: (0,4) Point 2: (1,6)

If the array includes just the positive integers [tex]{\displaystyle 1,2,...,n^{2}}{\displaystyle 1,2,...,n^{2}}[/tex], the magic square is said to be normal. Some authors take magic square to mean normal magic square.

A magic square is a square grid of numbers that has the same sum for every row, column, and diagonal. It is a mathematical puzzle that has been known and studied for thousands of years. Magic squares can be of different sizes, but the most common are those with odd numbers of rows and columns.

The concept of magic squares dates back to ancient China, where they were believed to have mystical properties. In India, they were used for divination and as part of religious rituals. In Europe, magic squares were popularized in the 16th century, where they were used as a form of mathematical entertainment. Magic squares are not only interesting mathematical puzzles but also have practical applications.

To learn more about Magic square visit here:

brainly.com/question/28764583

#SPJ4

Complete Question: -

Fill the given squre with numbers from 0 to 8 ( using each of them exactly once) in such a way that the sum of the numbers in the first second and third rows are third rows are in the ratio 1 : 2 : 3. At the same time the sum of the numbers in the first second and third columns also have to be in the same ratio.​

The z-score for a weight of 13 ounces for a bird living in the northern region is 1 and in the southern region is -1.2.

A z-score, also known as a standard score, is a statistical measure that indicates how many standard deviations an observation or data point is above or below the mean of the distribution.

z = (x - μ) / σ

where

x  = value of the variable

μ = mean of the distribution

σ = standard deviation of the distribution.

In northern region, x = 13 ounces, μ = 10 ounces, σ = 3 ounces

z - score = (13 - 10) / 3

               = 1

In southern region, x = 13 ounces, μ = 16 ounces, σ = 2.5 ounces

z - score = (13 - 16) / 2.5

              = -1.2

Learn more about z-score of revenue from the link below:

https://brainly.com/question/15016913

#SPJ4

PLEASE GIVE BRAINLIEST!

thank you and have a good day, I hoped this helps :)

Answer:

1/12

Step-by-step explanation:

To calculate the chances of Douglas eating one  slice of cheese pizza

3/(5+3+1) = 1/3

To calculate the odds of him eating another cheese pizza slice

2/(5+2+1) = 1/4

To calculate the odds of Douglas eating the same two kinds of pizza

1/4 times 1/3

there you go! :)

With the root values 6 and 8 the quadratic equation is x² - 6x +8 = 0.

What is a quadratic function?

A polynomial function with one or more variables, where the largest exponent of the variable is two, is referred to as a quadratic function. It is also known as the polynomial of degree 2 since the greatest degree term in a quadratic function is of second degree.

The roots of the quadratic equation are -

HCF of smallest prime number, LCM of smallest composite number

The smallest prime number is 2.

So, the HCF of 2 is 2.

The smallest composite number is 4.

So, the LCM of 4 is 4.

If m and n are the roots of a quadratic equation ax² + bx + c = 0, then the sum of the roots is (m+n) and the product of the roots is (mn).

And then the quadratic equation becomes x² - (m+n)x +mn = 0.

So, here m = 2 and n = 4.

The sum of roots is -

(m + n) = (2 + 4) = 6

The product of roots is -

(mn) = (2 × 4) = 8

So, the quadratic equation is x² - 6x +8 = 0.

Therefore, the equation is x² - 6x +8 = 0.

To learn more about quadratic function from the given link

https://brainly.com/question/25841119

#SPJ1

Answer:

The data in Set A are skewed left, because the mean is less than the median. The data in set B are symmetrical, because the mean is equal to the median.

Step-by-step explanation:

For prim people, this is the answer I got it right.

Based on the information, the surface area of the pyramid would be: Surface Area = 519.6ft

To find the surface of this hexagonal pyramid we must perform the following mathematical procedure:

Once we know this information, we must apply the following formula:

Note: This question is incomplete. Here is the complete information:

S=14ft

W = 10ft

B = 5√3ft

Learn more about pyramids in: https://brainly.com/question/13057463

#SPJ1

Answer: are have a raztation speed of 20 rotation a min

Step-by-step explanation:W anwer

James runs 400m in a day

In a week = 7 days

400m × 7 days = 2800m

To convert 2800m to km

1km = 1000m

So, 2800m/1000m

= 2.8 km

How far are the Town Center and the Park

3.5 km and 650m

650m to km

1km = 1000m

To km  = 0.65km

The distance = 3.5km - 0.65km

= 2.85km

So, they are 2.85km apart

A bottle  = 1.75 liters of lemonade

A can = 330 ml of lemonade

1.75 liters to milliliters

1 liter = 1000 milliliter

= 1.75 × 1000 ml

= 1750 ml

2 bottles of lemonade

1750ml × 2

= 3500 ml

6 cans of lemonade

330ml × 6

= 1980 ml

In total, 3500ml + 1980ml

= 5480 ml

Read more about Word Problem

https://brainly.in/question/12426468

#SPJ1