If you have a distribution of 50 scores, and you want 5 intervals, what should be the size of your class interval?

Answers

Answer 1
I'm not really sure,  but maybe 10

Related Questions

Find the 55th derivative of y = cos(3x).

Answers

since the derivative of cos(ax) is -a sin(x) and the derivative of sin(ax) is a cos(ax), then the 55th derivative will be 3^(55) (-1)^(54/2)) (-1) sin(3x) or: 3^(55)*sin(3x)

Final answer:

The 55th derivative of y = cos(3x) is recognized by repeating the derivative patterns of cosine functions and is found to be -27cos(3x).

Explanation:

The 55th derivative of y = cos(3x) can be found by recognizing that the derivatives of sine and cosine functions repeat every four steps. Considering the pattern cos(x) -> -sin(x) -> -cos(x) -> sin(x) -> cos(x), and that the derivative of cos(3x) is -3sin(3x), we can determine that the pattern repeats every four derivatives with a factor of 3n, where n is the number of times the derivative is taken.

The 55th derivative will be the same as the third derivative in the cycle, but with an iteration count of 55/4, which leaves a remainder of 3, so the 55th derivative will be -27cos(3x).

the product of three consecutive nonzero integers

Answers

Final answer:

To find the product of three consecutive nonzero integers, multiply the first number by the next two numbers in the sequence.

Explanation:

If the first integer is n, the next will be n+1 and the next to it will be n+2

The product of three consecutive nonzero integers can be calculated using the formula:

n * (n+1) * (n+2)= n(n^2 + 3n+ 2)=n^3 +3n^2 + 2n

where 'n' represents the first integer. For example, if we take 'n' as 2, the three consecutive nonzero integers would be 2, 3, and 4. So, the product would be 2 * 3 * 4 = 24= (2)^3+  3*(2)^2+ 2*2

Question 4 deon runs 7 miles in 50 minutes. at the same rate, how many miles would he run in 75 minutes?

Answers

Set up a proportion of miles to minutes:

7 mi/50 min= x mi/75 min

Cross multiply:
7*75=525
525/50= 10.5

Final answer: 10.5 mi

A sample is a sample that isn't representative of the entire population.
unbiased
systematic
biased

Answers

The correct answer is:  [C]:  "biased" .
_________________________________________________

Answer: The answer is biased :)

40% of the men and 30% of the women also belong to a cycling club.

Work out the percentage of the whole membership that belong to a cycling club.

Answers

Given that 40% of the men and 30% of the women also belong to a cycling club, the percentage of the whole membership that belong to a cycling club is given by 40%(30%) = 0.4(0.3) = 0.12 = 12%.

Therefore, the percentage of the whole membership that belong to a cycling club is 12%.

In the equation y = 2x -3 if x = 3, what is the ordered pair of the solution?

Answers

The ordered pair of the solution is (6, -3)

what can be divided thit number 288

Answers

What is hell is thit? And this question makes no sense
288 can be divided by 2, which gives 144
288 can be divided by 4, which gives you 62

etc


There are a lot of different numbers that give you 288

hope this helps

The united states has 12,383 miles of coastline. If 0.8% of the coastline is located in Georgia, about how many miles of coastline are in Georgia

Answers

Total miles: 12, 383 (given)
0.8% * 12383
99.064 miles

Answer:

99.064  miles of coastline are in Georgia.

Step-by-step explanation:

Consider the provided information.

The united states has 12,383 miles of coastline and 0.8% of the coastline is located in Georgia.

Now we need to find about how many miles of coastline are in Georgia.

Thus solve this as shown:

0.8% of 12,383

[tex]\frac{0.8}{100} \times 12,383[/tex]

[tex]0.008 \times 12,383[/tex]

[tex]99.064[/tex]

Hence, 99.064  miles of coastline are in Georgia.

Solve for a.
7a-2b=5a-b

Answers

a=1 because the 2b and be cancel out and you combine like terms

Answer: a=-3b

                  2

Step-by-step explanation:

get all letters on the same side so:

7a-5a (because when you cross the = you do the opposite)=-b+2b

2a=b

you are solving for a so: 2a/2=b/2

so the 2 cancel out and you have a=1/2b

Convert rational numbers into improper fraction-29

Answers

29/1

Improper fractions have a greater numerator.

29 > 1

ahem ahemm   

[tex]\bf \textit{any integer }\mathbb{Z}\textit{ can be written as }\cfrac{\mathbb{Z}}{1} \\\\\\ -29\implies \stackrel{improper}{\cfrac{-29}{1}}[/tex]

Find the product and simplify your answer. -4k^2(-3k^3+5k-5)

Answers

-4k^2(-3k^3+5k-5)
= 12k^5 - 20k^3 + 20k^2 ...expand by using distributive property

hope it helps

While catching fireflies, you and a friend decide to have a competition. after mm minutes, you have (3m+13)(3m+13) fireflies and your friend has (4m+6)(4m+6) fireflies.
a. write an expression in simplest form that represents the number of fireflies you and your friend caught together?

Answers

f(x)=(3m+13)(3m+13)+(4m+6m)(4m+6)

=(9m^2+78m+169)+(16m^2+48m+36)

=25m^2+126m+205

What is the equation of a line that passes through the point (8, −2) and is parallel to the line whose equation is 3x + 4y = 15? Enter your answer in the box

Answers

Step 1

Find the slope of the given line

we have

[tex]3x+4y=15[/tex]

Isolate the variable y

Subtract [tex]3x[/tex] both sides

[tex]3x+4y-3x=15-3x[/tex]

[tex]4y=-3x+15[/tex]

Divide by [tex]4[/tex] both sides

[tex]y=-\frac{3}{4}x+ \frac{15}{4}[/tex]

the slope of the given line is

[tex]m=-\frac{3}{4}[/tex]

Step 2

Find the equation of the line that passes through  the point [tex](8,-2)[/tex] and is parallel to the given line

we know that

if two lines are parallel, then their slopes are equal

The equation of the line into point-slope form is equal to

[tex]y-y1=m(x-x1)[/tex]

we have

[tex]m=-\frac{3}{4}[/tex]

[tex](x1,y1)=(8,-2)[/tex]

substitute in the equation

[tex]y+2=-\frac{3}{4}(x-8)[/tex]

[tex]y=-\frac{3}{4}x+6-2[/tex]

[tex]y=-\frac{3}{4}x+4[/tex]  or  [tex]3x+4y=16[/tex]

therefore

the answer is

[tex]y=-\frac{3}{4}x+4[/tex]

or

[tex]3x+4y=16[/tex]

Answer:

3x+4y=16

Clarifying because other explanation was confusing

Just took review

Step-by-step explanation:

Use a trigonometric ratio to find the length of side ST.

Answers

check the picture below.

make sure your calculator is in Degree mode.

I’m stuck on 5-6. Please help if you could explain the answer also that would be awesome

Answers

the answer is... #5 is ONE because theres only one way to get there
i think #6 is Infinitely many

The answer to the first question is "b. one," according to Euclid's First Postulate. The answer to the second question is "c. infinitely many," according to Euclid's Second Postulate. These principles form the foundation of Euclidean geometry.

In Euclidean geometry, there are fundamental postulates and theorems that govern the behavior of lines and angles in triangles. Let's address your questions:

1. How many lines can be drawn through point A perpendicular to segment BC?

Answer: There can be only one line drawn through point A that is perpendicular to segment BC. This follows from Euclid's First Postulate, which states that a straight line can be drawn between any two points. In this case, the straight line from point A to any point on segment BC is unique and perpendicular.

2. How many lines can be drawn through point C perpendicular to segment AB?

Answer: Infinitely many lines can be drawn through point C that are perpendicular to segment AB. This is based on Euclid's Second Postulate, which states that a straight line can be extended infinitely in both directions. So, you can draw as many lines as you like, all of which are perpendicular to segment AB, and they will extend infinitely in both directions.

Learn more about Euclidean geometry here:

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The larger of two numbers is four more than the smaller number. If the sum of the numbers is 74, find the numbers

Answers

The numbers are 39 and 35.

What's the answer to
4.5 divided by 1.8

Answers

4.5 divided by 1.8= 2.5

Hope this helps
4.5 divided by 1.8 equals 2.5

find the value of x and BC if B is between C and D CB=4x-9 BD=3x+5 and CD= 17

Answers

x = 3 and CB = 19. To find x you would put 4x-9 + 3x+5 = 17. Remember to get all the x’s on one side and the other numbers on the other aide of the equal sign. Then plug x into the length of BC.
Final answer:

To find the value of x and BC, set up the equation CB + BD = CD and solve for x. The value of x is 3 and BC is 3.

Explanation:

To find the value of x and BC, we can set up the equation CB + BD = CD and solve for x.

Substituting the given values CB = 4x - 9, BD = 3x + 5, and CD = 17, we get (4x - 9) + (3x + 5) = 17.

Combining like terms, we have 7x - 4 = 17. Solving for x, we find x = 3. Plugging this value back into CB = 4x - 9, we get BC = 4(3) - 9 = 12 - 9 = 3.

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3x-43=8 slove the equation

Answers

3x - 43 = 8
Shift the - 43 to the other side and change it to +
3x = 8 + 43
3x = 51
Isolate x by shifting 3 to the other side, dividing 51 by 3.
X = 51 / 3
X = 17
Salutations!

[tex]3x-43=8[/tex]

Keep the variables aside, and the numbers aside.

[tex]3x = 8+43[/tex]

The operation changes as you isolate them

[tex]3x= 51[/tex]

Divide 51 by 3

[tex]x=51/3[/tex]

[tex]x=17[/tex]

Hope I helped (: 

Have a great day!

How many different types of cross sections of a cone are possible? A.3
B.5
C.6
D.10

Answers

The answer is B. 5.
There are five different types of cross sections of a cone possible.

Please help me on this question

Answers

    -4 = 8m + 18n
-18n = 8m + 4
 /-18    /-18  /-18
     n = 8m/-18 + 4/-18
     
I'm not sure so yeah
-4 = 8m + 18n (Original problem)
-8m -8m. (Subtract 8m from both sides)
-4 -8m = 18n (Divide both sides by 18)
-4 -8m/18 =n (Answer)

Enter a compound inequality to show the levels that are within each range. Then graph the solutions.

A typical acoustic guitar has a range of three octaves. When the guitar is tuned to "concert pitch," the range of frequencies for those three octaves is between 82.4 Hertz and 659.2 Hertz inclusive.

The compound inequality that represents the range of frequencies for a guitar tuned to "concert pitch" using the variable f is

Answers

The midpoint of the range of frequencies given is:

midpoint =  (82.4 + 659.2) / 2 = 370.8 Hertz

 

Then the difference from midpoint to the other end is:
370.8 - 83.4 = 288.4 Hertz


Therefore the inequality formula is
|f - 370.8| <= 288.4

Can someone please help me and like show and explain how to get the answer?

Layla is on page 30 of her book and reads 3 pages every night. Sidney is on page 40 of the same book and reads 2 pages every night. How long will it take for Layla to be further in the book than Layla?
A) 3 nights
B) 11 nights
C) 15 nights
D) 71 nights

Answers

it will take layla 11 nigths

Gina's number is 2 more than sara's. the sum of their numbers is 68. what are their numbers?

Answers

Answer:

Gina=35, Sara=33

Step-by-step explanation:

Gina's number is 2 more than Sara's.

Lets start by saying cookies as the number.

Sum = 2 numbers add together. The answer to the equation. Lik 5+5=10. 10 is the sum.

You only know that Gina has 2 more cookies than Sara.

If Sara has 3 cookies then Gina has 5 cookies. Whats the Sum? 8.

So, you figure out an random big number but, smaller than 68.

Lets do 68 to try now.  So you do 68/2 = 34. You remember that Gina has 2 more than Sara. So, 35 cookies for Gina. So, you can guess that Sara has 33 cookies.

At a local carnival, a hot dog costs $1.50 each and water costs $0.80 each. You want to buy food and water for yourself and your friends but do not want to spend more than $20. Which inequality represents how many hot dogs and how much water you can buy?

Answers

Let x be the amount of hot dog and let y be the amount of water. So you will pay for it 1.50*x+0.80*y. Since you do not want to spend more than 20$, it should satisfy the inequality 1.50*x+0.80*y<=20.

1.50x+0.80y≤20 is inequality represents how many hot dogs and how much water you can buy

What is Inequality?

A relationship between two expressions or values that are not equal to each other is called 'inequality.

Given,

a hot dog costs $1.50 each and water costs $0.80 each.

Let  x be the amount of hot dog

y be the amount of water

As hot dog costs $1.50 each, 1.50x

water costs $0.80 each, so 0.80y

You want to buy food and water for yourself and your friends but do not want to spend more than $20

1.50x+0.80y≤20

Hence, 1.50x+0.80y≤20 is inequality represents how many hot dogs and how much water you can buy

To learn more on Inequalities click:

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Please help with 12!!!!!

Answers

2. one angle of and one side are equal therefore bc and ce have to equal each other.
3.because angle a and angle d equal each other, angles acb and dce equal each other
4.opposite interior angles equal each other
5.triangles equal each other for all the reasons above

Your baseball team has a goal to collect at least 160 blankets for a shelter. Team members brought 42 blankets on monday and 65 on wednesday . Write and solve an inequality to find out how many blankets the team has to collect on friday?

Answers

y=160-(65+42). so it's 53

Answer:

Atleast 53

Step-by-step explanation:

We are given that your basketball team has a goal  to collect atleast 160 blanket for a shelter.

Team member bought blankets on Monday =42

Team member bought blankets on Wednesday=65

We have to write an inequality and find the number of blankets  has to collect on Friday.

Let x be the number of blankets  bought by team members on Friday

According to question

[tex]42+65+x \geq 160[/tex]

[tex]107+x \geq 160[/tex]

Subtract 107 on both sides

[tex]107-107+x\geq 160-107[/tex]

[tex]x\geq 53[/tex]

Hence, team members bought atleast 53 blankets on Friday .

completa cada enunciado y escribe la proporción correspondiente. si por cada 21.000 se compran tres agendas ¿ con cuanto se compran nueve?

Answers

Si por cada $21,000 se compran tres agendas, entonces se compran 9 agendas con $63,000.

Identify the coefficients and variables in each expression. 5j-9cd+2 ??

Answers

The leading coefficient is -9
The degree is 2
The leading term is 9cd
Variables are nothing more than a placeholder. They stand for things that you want to find out but don't have the answer to yet.
The variables are j, c, and d.

Which of the following is a possible long-term health effect of stress?
A. heart disease
B. rapid breathing
C. heartburn
D. tense muscles
choose all that apply

Answers

The correct answer is A
The answer is A heart disease
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