In class of 40 students report that english is their favorite class 40 percent of the students report that keyboard is there favorite class show the work

QUESTION POSTED AT 03/12/2019 - 12:36 PM

Answered by admin AT 03/12/2019 - 12:36 PM

If 40% of students prefer keyboarding, 40/100*40=16 students like it best. If the remaining students prefer English, then 40-16=24 students like English best. Since 24 is more than 16, most students prefer English.
Post your answer

Related questions

What is 40% simplified in a fraction

You want to start by putting 40 over 100 like a fraction and then you would take off the last zero in the hundred and the zero on forty and then that would give you 4/10 and then from there you would take 2 and divide too and bottom and that would give you 2/5 which will be your answer

ANSWERED AT 24/01/2020 - 11:57 PM


QUESTION POSTED AT 24/01/2020 - 11:57 PM

Working together, Rocco and Giulia can paint a room in 3 hours. It would have taken Rocco 7 hours to do the job alone. Which equation can be used to determine r, Giulia’s rate of work in parts per hour

Rocco and Guilia can paint and finish together in 3 hours while Rocco alone can do it alone in 7 hours. Guilia at the rate of 1/r can finish the job expressed in the following equation. 1/3= 1/7+1/r. Getting r, r is equal to 5.25 hrs. Hence, Guilia can do painitng alone in 5.25 hrs.

ANSWERED AT 24/01/2020 - 10:54 PM


QUESTION POSTED AT 24/01/2020 - 10:54 PM

What were the main contours of English colonization in the seventeenth century?

The main contours of English colonization in the seventeenth century was that English colonization was funded by proprietary provinces operating with land grants, or charters, from the English monarchy.

ANSWERED AT 24/01/2020 - 10:53 PM


QUESTION POSTED AT 24/01/2020 - 10:53 PM

All swimming equipment is on sale with a 40% discount. A snorkeling set regularly sells for $45. Find the discount.

40% off of 45$ would leave you with 27$

ANSWERED AT 24/01/2020 - 10:52 PM


QUESTION POSTED AT 24/01/2020 - 10:52 PM

Matt looked at the architectural plan of a room with four walls in which the walls meet each other at right angles. The length of one wall in the plan is 19 inches. The length of the diagonal of the floor of the room in the plan is approximately 20.62 inches. Is the room in the shape of a square? Explain how you determined your answer. Show all your work.

To quickly calculate this problem, we multiply the square root of two to 19 inches and check if the product is equal to 20.62 inches. Square root of two comes from the pythagorean theorem assuming the angle of the corners is 90 degrees. In this case, the answer is 26.87 inches which is greater than 20.62 inches. This means the shape of the room is not a square. 

ANSWERED AT 24/01/2020 - 10:49 PM


QUESTION POSTED AT 24/01/2020 - 10:49 PM

coin is flipped 70 times and lands on tails 42 times. What is the relative frequency of the coin landing on tails? 30% 40% 50% 60%

Relative frequency is the number of successes out of the total number of trials.
In this case, 42 successes out of 70 means 60%.

ANSWERED AT 24/01/2020 - 10:47 PM


QUESTION POSTED AT 24/01/2020 - 10:47 PM

Tina conducted a survey to find the favorite weekend activity of the people in her state. She asked 10 of her neighbors what their favorite weekend activity is. Tina concludes that boating is the favorite weekend activity of the people in her state because 70% of her neighbors like to go boating on weekends. Use at least two sentences to explain why Tina's sample may not be valid. Make sure to use facts to support your answer.

Answer: Tina sample may not be valid because her sample does not represent the population of her state because it is just her neighborhood. Another reason it may not be valid is because her neighbors like to go boating on the weekends.

Hope this helps!!!

ANSWERED AT 24/01/2020 - 09:56 PM


QUESTION POSTED AT 24/01/2020 - 09:56 PM

What is the solution to the system of equations? y = –3x – 2 5x + 2y = 15 (–40, 19) (–19, 55) (19, –40) (55, –19)

Reorganize the equations;
y+ 3x   =-2
2y+5x=15
-----------
Multiply equation I by two for y to have a common factor;
2y+6x=-4
2y+5x=15
--------------
x=-19
Replacing value of y in equation 1;
y+(3*-19)=-2
y-57=-2
y=55

ANSWERED AT 24/01/2020 - 06:03 PM


QUESTION POSTED AT 24/01/2020 - 06:03 PM

At most, Alana can spend $40 on carnival tickets. Ride tickets cost $4 each, and food tickets cost $2 each. Alana buys at least 16 tickets. The system of inequalities represents the number of ride tickets, r, and the number of food tickets, f, she buys. r + f ≥ 16 4r + 2f ≤ 40 What is the maximum number of ride tickets she can buy? 4 6 10 12

We can let r be the number of food tickets and f be the number of food tickets. Since Alana can spend at most $40, that means the total of price bought for r and f must be less than or equal to $40. In addition, since Alana buys at least 16 tickets, this also means that the total of r and f is 16. Mathematically, we have these inequalities: (1) 4r + 2f ≤ 40 and (2) r + f ≥ 16 Multiplying -2 in (2), we have 4r + 2f ≤ 40 -2r - 2f ≤ 32 Adding both inequalities, 2r ≤ 8 r ≤ 4 Since r must be less than or equal to 4.Thus the answer is A.

ANSWERED AT 24/01/2020 - 06:03 PM


QUESTION POSTED AT 24/01/2020 - 06:03 PM

∆ABC is similar to ∆DEF. The ratio of the perimeter of ∆ABC to the perimeter of ∆DEF is 1 : 10. The longest side of ∆DEF measures 40 units. The length of the longest side of ∆ABC is ____units. The ratio of the area of ∆ABC to the area of ∆DEF is ____.


we know that


1) scale factor is equal to  \frac{1}{10}


2) The ratio of the perimeters of the triangles is equal to the ratio of the measures of the sides


3) the longest side of ∆ABC=[scale factor]*the longest side of ∆DEF

the longest side of ∆ABC= \frac{1}{10}*40

the longest side of ∆ABC= 4 units


the answer part a) is

the longest side of ∆ABC is  4 units


Part b)

The ratio of the area of ∆ABC to the area of ∆DEF is equal to the scale factor squared

so

 [scale factor]^{2} =(\frac{1}{10})^{2} \\ \\ =\frac{1}{100} \\ \\ =0.01


therefore


the answer part b) is

The ratio of the area of ∆ABC to the area of ∆DEF is  \frac{1}{100}

ANSWERED AT 24/01/2020 - 06:02 PM


QUESTION POSTED AT 24/01/2020 - 06:02 PM

Segment AB is congruent to segment AB. This statement shows the_________ property.

Reflexive Property, the property where the quantity equals itself.

ANSWERED AT 24/01/2020 - 06:01 PM


QUESTION POSTED AT 24/01/2020 - 06:01 PM

If the probability of success during a single event of a geometric experiment is 0.03, what is the probability of success by the 13th event? Round your answer to the nearest tenth of a percent.

Answer:

The probability of success by the 13th event is:

                                   2.1%

Step-by-step explanation:

We know by geometric distribution the probability of a sucess at the kth experiment is given by:

             P(X=k)=(1-p)^{k-1}\times p

where p is the probability of the success.

Here we have:  p=0.03

and 1-p=0.97

and k=13

( since we are asked to find the probability by 13th event)

Hence, the probability is:

         P(X=13)=(0.97)^{12}\times 0.03\\\\\\P(X=13)=0.02081

In percent it is given by:

P(X=13)=2.08\%

To the nearest tenth it is: 2.1%

ANSWERED AT 24/01/2020 - 06:01 PM


QUESTION POSTED AT 24/01/2020 - 06:01 PM

4 Jillian's school is selling tickets for a play. The tickets cost $10.50 for adults and $3.75 for students. The ticket salesfor opening night totaled $2071.50. The equation 10.50a 3.75b 2071.50, where a is the number of adult ticketsA sold and b is the number of student tickets sold, can be used to find the number of adult and student tickets. If 82students attended, how may adult tickets were sold?adult tickets

Answer: The number of adult tickets sold is 168.

Step-by-step explanation:  Given that the Jillian's school is selling tickets for a play. The tickets cost $10.50 for adults and $3.75 for students.

The ticket sales for opening night totaled $2071.50. The equation representing the situation is

10.50a+3.75b=2071.50~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

where a is the number of adult tickets sold and b is the number of student tickets sold.

We are to calculate the number of adult tickets that were sold.

If 82 students attended, then b = 82.

Substituting the value of b in equation (i), we get

10.50a+3.75b=2071.50\\\\\Rightarrow10.50a+3.75(82)=2071.50\\\\\Rightarrow10.50a+307.5=2071.50\\\\\Rightarrow10.50a=2071.50-307.5\\\\\Rightarrow10.50a=1764\\\\\Rightarrow a=\dfrac{1764}{10.50}\\\\\Rightarrow a=168

Thus, the number of adult tickets sold is 168.

ANSWERED AT 24/01/2020 - 05:55 PM


QUESTION POSTED AT 24/01/2020 - 05:55 PM

Which shows one way to determine the factors of x3 + 5x2 – 6x – 30 by grouping? x(x2 – 5) + 6(x2 – 5) x(x2 + 5) – 6(x2 + 5) x2(x – 5) + 6(x – 5) x2(x + 5) – 6(x + 5)

One way to determine the factors of :

x³ + 5x² - 6x - 30 = x² ( x + 5 ) - 6 ( x + 5 )

Further explanation

If equation ax³ + bx² + cx + d = 0 has roots x₁ , x₂ , and x₃ then

x_1 + x_2 + x_3 = - \frac{b}{a}

x_1 x_2 + x_1 x_3 + x_2 x_3 = \frac{c}{a}

x_1 x_2 x_3 = - \frac{d}{a}

Let us now tackle the problem!

To factor the equation given can be done in the following way

x^3 + 5x^2 - 6x - 30 = ( x^3 + 5x^2 ) - ( 6x + 30 ) → group it into two parts

\boxed {x^3 + 5x^2 - 6x - 30 = x^2( x + 5 ) - 6( x + 5 )} → factorize both parts

x^3 + 5x^2 - 6x - 30 = ( x^2 - 6 )( x + 5 )

Learn more

Answer details

Grade: High School

Subject: Mathematics

Chapter: Polynomial

Keywords: Quadratic , Equation , Discriminant , Real , Number , Polynomial , Factors

ANSWERED AT 24/01/2020 - 05:53 PM


QUESTION POSTED AT 24/01/2020 - 05:53 PM

At a railway yard, locomotives are used to haul containers carrying oil. A locomotive is chosen according to the volume of oil it can haul, as shown in the table. Locomotive Capacity A450 0−750 cubic feet CG35 750−1,500 cubic feet BR73 1,500−2,500 cubic feet YH61 2,500−3,500 cubic feet The four cylindrical containers listed in the table need to be hauled. Cylinder Length (ft.) Diameter (ft.) Fill Level A 40 12 half B 24 8 full C 16 16 full D 6 12 full Match each container to the locomotive needed to haul it. Tiles A450 cylinder A CG35 cylinder B BR73 cylinder C YH61 cylinder D

Volume of cylinder A = π(12^2/4) x (40/2) = 2,262 cubic feet which will be hauled by locomotive BR73.
Volume of cylinder B = π(8^2/4) x 24 = 1,206 cubic feet which will be hauled by locomotive CG35.
Volume of cylinder C = π(16^2/4) x 16 = 3,217 cubic feet which will be hauled by locomotive YH61.
Volume of cylinder D = π(6^2/4) x 12 = 339 cubic feet which will be hauled by locomotive A450.

ANSWERED AT 24/01/2020 - 05:49 PM


QUESTION POSTED AT 24/01/2020 - 05:49 PM

Greg picks apples to make money over the summer. He earns $3 an hour plus $2.50 for each bushel he picks. Write a formula that will help Greg determine how much money he will earn in one week. Let's let a = Total amount earned h = Hours worked in one week b = Number of bushels picked.

Since he makes $3 an hour for picking apples, that is 3h,
$2.5 for each bushel he picks, that's 2.5b.
Together, we add these two for his total money earned in the week for picking apples.

The final equation is then a = 3h + 2.5nb to find how much money Greg earned in a week.

ANSWERED AT 24/01/2020 - 04:50 PM


QUESTION POSTED AT 24/01/2020 - 04:50 PM

A student throws 3 coins in the air. Find the probability that exactly 2 landed on heads, given that at least 2 landed on heads.

In problems of probability, it is best to find out the sample space or all the possible outcomes from throwing 3 coins in the air. 
S = {HHH, TTT, HHT....}
 
The condition is at least 2 landed on heads (that means 2 or more). From the sample space, that can only be {THH, HHT, HTH, and HHH}.

Therefore, the probability is 3/4 since there are a total of 8 possible outcomes.

ANSWERED AT 24/01/2020 - 04:50 PM


QUESTION POSTED AT 24/01/2020 - 04:50 PM

The odometer shows a palindromic number, a number that is the same written forwards and backwards. Two hours later the number is palindromic again. How fast was the car going, if the first number was 15,951 miles?

12,021
18,181
23,332
25,552
these are some examples i came up with to help you figure out how to do this problem.

ANSWERED AT 24/01/2020 - 04:46 PM


QUESTION POSTED AT 24/01/2020 - 04:46 PM

Mary sells 11 adult tickets, 23 student tickets, and 4 discount tickets for the school play. Write the ratio student tickets to adult tickets in three ways.

Three ways are 
23/11 (23 over 11)

2.09

2  1/11 (see picture link for correct formatting.)


ANSWERED AT 24/01/2020 - 04:12 PM


QUESTION POSTED AT 24/01/2020 - 04:12 PM

Leon has to drive 36 miles to work. If he can average a speed of 48 miles per hour, about how long does it take him to get to work each day? (Hint: Use the formula d = rt.)

Answer:

45 minutes

Step-by-step explanation:

Leon has to drive to work = 36 miles

His average speed  = 48 miles per hour

By using the given formula = d = rt

d = distance

r = rate of speed

t = time

36 miles =  48 × t

\frac{36}{48} = t

0.75 hours.

Now we convert it to minutes

0.75 × 60 = 45 minutes

Leon takes 45 minutes to get to work each day.

ANSWERED AT 24/01/2020 - 04:06 PM


QUESTION POSTED AT 24/01/2020 - 04:06 PM