Friday

February 24, 2017
**Math**

Show that 1+((e^x-e^-x)/2)^2 = ((e^x+e^-x)/2)^2 Can someone explain how does the 1st equation is equal to the 2nd one

*Sunday, June 5, 2016 by Mr Homie*

**Math ---HELP!!!!!**

30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a sample of 100 ...

*Tuesday, May 31, 2016 by angela*

**Math ---HELP!!!!!**

30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a sample of 100 ...

*Tuesday, May 31, 2016 by angela*

**earth science**

When I bumped the table, the coffee in my cup spilled out. Newton's _____ law explains this reaction. 1st 2nd 3rd

*Tuesday, May 24, 2016 by r*

**java programming**

Test Average and Grade Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Write the following methods in the program: • calcAverage—This method should accept five test scores as...

*Sunday, May 15, 2016 by ignatius*

**Math**

2(3c to the 2nd power+ c +-2 Please check 6c to the 4th power+c squared + -4

*Sunday, May 8, 2016 by Tanya*

**8th grade math - system of equations**

I'm not sure how to solve these. Solve using any method (substitution or elimination) 23. The sum of two numbers is 27. The larger number is three more than the smaller number. What are the two numbers? Ans: l = large; s = small l + s =27 and l = 3S 3s + s =27 4s =27 4s/4 = 27...

*Wednesday, April 27, 2016 by Alexis*

**stats**

Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A’s to the top 10% of students, B’s to the next 25%, and C’s to the next 42%. a.) what is the bottom cutoff for a C grade? b.) what is the ...

*Monday, April 25, 2016 by vanessa*

**Maths**

The Ratio Of The 2nd Term To The 7th Term Of An A.P Is 1:3 And Their Sum Is 20.Calculate The Sum Of The 1st Terms Of The G.P

*Monday, April 25, 2016 by Maths*

**Math**

I have a 92 average right now. I got a 93 on a major grade test, but my teacher has not posted the grade in Skyward yet. Will my average get lower or higher?

*Saturday, April 23, 2016 by Rhea*

**dramatic art .tourism. history and math lit**

I'm doing grade 11 next year grade 12 I don't know which job can do with this subject pls help me to found more information about it plss

*Sunday, April 17, 2016 by annita*

**Math**

I have 9 coins, and they equal .60cent. I need two combinations.... myou're first combination is: 1 quarter 3 dimes 5 pennies What's the 2nd combo?

*Monday, April 4, 2016 by Klo*

**Math**

Write an expression for this statement: Double 5, then add 63. I don't understand double 5. Does it mean 5 to the 2nd power or 5 +5?

*Saturday, April 2, 2016 by Susan*

**science**

Can you unscramble these two words? ACGIJJ 2nd word is KMNPKSU

*Tuesday, March 29, 2016 by Tracey*

**Science**

What should I take next year? I am in the 5th grade. I want to know what classes i should take for 6th grade.

*Wednesday, March 16, 2016 by Lokelani Kekumu*

**Math**

Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound...

*Monday, March 14, 2016 by Hi*

**Sign Language**

Hi I would like for my answers to be checked for these two questions (Note: I'm not sure if the 2nd one is correct): 1. Several school-related words are based on which sign? a. book b. learn c. school d. study My Answer: book 2. How do you change a statement in American Sign ...

*Tuesday, February 23, 2016 by Jazmine*

**math**

The first term of an arithmetic sequence is 2.The 12th term in the progression is 9 times bigger than the 2nd term. Find the common difference d.

*Wednesday, February 17, 2016 by John*

**math**

If I have an 89 and get a 70 on something that is worth 50% of my grade what would my grade become

*Monday, February 15, 2016 by Anonymous*

**Statistics**

2.5 Points 30% of the fifth grade students in a large school district read below grade level. The distribution of sample proportions of samples of 100 students from this population is normal with a mean of 0.30 and a standard deviation of 0.045. Suppose that you select a ...

*Wednesday, February 10, 2016 by Amy*

**Math**

Two regular hexagons have their sides in the ratio 2:3.Find the ratio of the areas of the 1 St & 2nd hexagons?

*Monday, February 8, 2016 by MD amir*

**English**

_____ and _____ are in Brooklyn What does this mean. It asked what borough we live in and I said Brooklyn and I don't get what the 2nd question is

*Tuesday, February 2, 2016 by Adam*

**math**

the sum of the reciprocal of two number is 1/2 twice the reciprocal of the sixth less than five times the reciprocal of the 2nd. what are the original #?

*Friday, January 29, 2016 by divine*

**Math**

The 2nd and 5th term of a.p are -7 and 56 respectively find the first term. The common ratio. The sum of the five term

*Wednesday, January 27, 2016 by Tola*

**input output**

I'm in 12th grade. But I find this 6th grade problem a bit CHALLENGING. X: 4 12 Blank Blank Y: 6 18 Blank 60 Someone please solve this. Like.. WHAT. (Solve the blanks)

*Tuesday, January 26, 2016 by lucas*

**math**

The 10th term of an arithmetic progress in 28 and the 7th term is 19.calculate the 1st,2nd and 3rd terms of the progression

*Tuesday, January 19, 2016 by Kamogelo*

**MATHS**

If the 1st,2nd,3rd term of a G.P areX,X+1,X+4 respectively,find X

*Monday, January 18, 2016 by STEVIUM*

**Math**

Find four consecutive,positive,even integers such that the product of the and the last integer equals the square of the 2nd integers

*Friday, January 8, 2016 by Maxelin*

**math**

The 5th terms of G.P is 4375 and 2nd term is 35 find ?

*Tuesday, January 5, 2016 by A.P and G.P*

**Math GP**

The 1st term of an infinite GP exceed s the 2nd term. Buy 2 and its sum is 50 find the series

*Thursday, December 17, 2015 by Anonymous*

**Math**

I can grade 5 papers in 45 minutes how many papers can I grade in 1.5 hours

*Monday, December 14, 2015 by C*

**MATH**

Reiny - the problem with the different inequality signs was typed from the textbook. I will notify instructor Thanks Another problem 3<5x-27<53 1st part 3<5x-27 27+3<5x-27+27 30/5 < 5x/5 6<x 2nd part 5x-27<53 5x-27+27<53+27 5x/5 < 80/5 x<16 ...

*Thursday, December 10, 2015 by Amie*

**Grades**

If I have an 82 in a class right now and a test is 50% of my grade but I get a C what would my total grade in the class be

*Thursday, December 10, 2015 by Anonymous*

**Math**

find three consecutive even integers that 3 times that 1st is equal to the 2nd added to the 3rd plus 38

*Wednesday, December 9, 2015 by Kimberlee*

**quine**

The 2nd and 5th term of a geometric progression are - 6 & 48 find the sum of the first four term respectively

*Thursday, November 12, 2015 by opeyemi*

**pre algebra**

in a math class with 31 students 27 earned a passing grade in a biology class with 21 students 17 earned a passing grade... what fraction of the math students earned a passing grade

*Tuesday, November 10, 2015 by tiawannnia*

**History**

Which amendment protects citizens from having their homes searched without a warrant A.)2ND B.)4TH C.)6TH D.)8TH C?

*Friday, November 6, 2015 by YRN DJ*

**11 Grade College Prep Math-Based Physics**

Not good at physics, so could someone check these practice test questions please? Explanations are appreciated. 1. Which of Newton's Laws says you cannot touch anything without being touched? a) 4th b) 2nd c) 1st d) 3rd *** 2. A 3.00 kg ball is dropped from rest from the roof ...

*Tuesday, October 27, 2015 by Ana*

**A.U.D**

The 2nd And 4th Term Of A G.P Are 8 And 32 Respectively What Is The Sum Of The First And Four Term

*Monday, October 26, 2015 by Jamiu*

**Mathematics**

The 2nd and 5th terms of a Gp are -5 and 48 respectively.find the sum of the first four terms.

*Saturday, October 24, 2015 by Amarachi*

**pre calc**

Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound ...

*Friday, October 9, 2015 by allexelle*

**pre calculos**

Joely's Tea Shop, a store that specializes in tea blends, has available 45 pounds of A grade tea and 70 pounds of B grade tea. These will be blended into 1 pound packages as follows: A breakfast blend that contains one third of a pound of A grade tea and two thirds of a pound ...

*Friday, October 9, 2015 by allexelle*

**prasanna high school**

Subject:maths. question: the sum of first 6terms.of an aritmetic progression is 6.the product of 2nd term & 5th term is -80 find the terms of A.P.

*Friday, October 9, 2015 by Anonymous*

**maths**

The sum of first 6 terms of an Arithmetic progression is 6 the product of 2nd term and 5th term is -80 . Find the terms of A.P.

*Thursday, October 8, 2015 by Anonymous*

**Probability**

Ten horses run in a race. How many different arrangements of placing 1st, 2nd , 3rd? I tried by doing 10!over 7! But I don't know if that is correct , also how can you tell the finishing number as well.

*Wednesday, September 30, 2015 by Amber*

**Algebra**

In his mathematics class, John has taken 3 tests, each worth 20% of his total grade. His grades on those tests were 92%,83%,and 85%. He has an 100% average on his homework, worth 10% of his grade. All that remains is a final exam worth 30% of his total grade. To the nearest ...

*Thursday, September 17, 2015 by -N*

**Math**

The 6th term of an arithmetic sequence is 3 times the 2nd term. Prove that the 10th term is twice the 5th term. tn=t1+(n-1)d

*Thursday, September 10, 2015 by Naomi*

**LAW**

The __________ Amendment right to counsel applies during plea bargaining because charges have already been filed before bargaining commences. a. 2nd b. 6th c. 8th d. 14th is it D

*Tuesday, September 1, 2015 by Amy*

**math**

I don't understand factoring. One of my homework questions asks for that. The question is "The area of a rectangular garden is given by the trinomial x to the 2nd power plus x -42. What are the possible dimensions of the rectangle? Use factoring.

*Thursday, July 30, 2015 by Barry*

**math (algebra)**

In Professor Tuffguy's mathematics class, 36 students took the final exam. If the average passing grade was 78, the average failing grade was 60, and the class average was 71, how many of these 36 student passed the final?

*Wednesday, July 8, 2015 by Samantha*

**Nursing**

My current overall average is a 76%. Another grade of 67 needs to be added in. That grade is worth 10%. What will my final average be?

*Wednesday, June 24, 2015 by Elaina*

**Algebra 1**

A teacher graded the tests for each of her students. She calculated a mean grade of 80 and a standard deviation of 3. One of her students, Katrina, had a z-score of 2. What grade did Katrina get on the test?

*Sunday, May 10, 2015 by Jacob*

**physical science**

A baseball diamond has 90 feet between bases. A player hits the ball and runs to 1st, 2nd and stops at 3rd base. The player's displacement is

*Wednesday, April 29, 2015 by Anonymous*

**Chem**

What is the order of rate = k[NO]2[Br2]. 2nd order?

*Thursday, April 23, 2015 by Marissa*

**math**

Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level. A. 0.14 B. 0.26 C. 211...

*Friday, April 17, 2015 by HELP*

**statistics**

Of the 6796 students in one school district, 1537 cannot read up to grade level. Among a sample of 812 of the students from this school district, 211 cannot read up to grade level. Find the sample proportion of students who cannot read up to grade level. A. 0.14 B. 0.26 C. 211...

*Friday, April 17, 2015 by Jane*

**programming**

Write a Java application that computes and prints the grade of a student according to the following algorithm: 1) It should read from the user TMA score and MTA score. 2a) If their sum is less than 15, the grade "FC" should be printed and the program will stop. 2b) Otherwise, ...

*Saturday, April 11, 2015 by pooja*

**ICT (Programming)**

Design program logic that receives the letter grades for 4 subjects and then based on the grades, calculate the total grade point. The program should use IF statements to determine the grade point corresponding to the letter grade (as given in the table below). Once all the ...

*Saturday, April 11, 2015 by Zee*

**7th grade math (probability)- additional questions**

Here are additional problems that weren't included in original post from 3/30. 4. There are 5 different color jolly ranchers in a bag - 10 cherry, 15 watermelon, 12 grape, 10 apple, and 8 raspberry. What is probability that you'll choose raspberry? Ans: 8/55 =.1454 = 15% 5. In...

*Tuesday, March 31, 2015 by Alexis*

**7th grade math (probability)**

I'm not sure how to answer this: 3. THe 7th grade wants to have a back-up representative just in case the first teacher is absent. Based on the same scenario as #2, if a math teacher was chosen to be the 7th grade representative, what is the probablility that the back-up drawn...

*Monday, March 30, 2015 by Alexis*

**math**

there are half as many 11th grade students in the band the are 9th grade students. how many 11th grade students are in the band

*Wednesday, March 25, 2015 by vanessa*

**Math**

Kami has an average of 64% in her class. School ends soon and she would like to raise her grade to a 74%.She has 2 tests left and tests counts as 80% of her grade, what would she have to get on the next to test to get her average up to a 74%?

*Wednesday, March 25, 2015 by Kammi*

**Math**

Theo made the table below to show the number of middle school students who attended the last football game. If the data were displayed in a circle graph, how many degrees would be in the sector representing the eigth graders? Grade 6 Number of students in attendance 375. Grade...

*Tuesday, March 17, 2015 by Anonymous*

**MATH**

DRIVING DOWN A 10% GRADE, THEN YOU DESCEND TO 20 FEET BELOW YOUR STARTING POINT. wHAT CONCEPT DOES THE GRADE RELATE TO?

*Monday, March 16, 2015 by BONNIE*

**Math**

Theo made the table below to show the number of middle school students who attented the last football game. if this data were displayed in a circle graph, how many degrees would be in the sector representing the 8th grade Grades 6,7,8 # of students in 6th grade: 375 7th grade...

*Monday, March 16, 2015 by Ann*

**Mathematics**

The sum of the 1st and 2nd terms of an AP is 4 and the 10th term is 19. Find the sum of the 5th and 6th terms

*Friday, March 13, 2015 by Amaka*

**language arts**

WEDNESDAY March 11, 2015 SCHOOL SUBJECTS Art Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th ...

*Wednesday, March 11, 2015 by hello*

**MATH**

You buy 3 pairs of pants at an original cost of $24.99 and the sale is buy 1 get the 2nd pair half off. The sales tax is 6%. How much do you pay in total for the pants? $39.73 $79.47 $52.98 my answer?? $66.23

*Friday, March 6, 2015 by Anonymous*

**MATHS**

in a GP,the product of the 2nd and 4th terms doubled the 5th term and sum of the first four term is 80.Find the GP.

*Tuesday, March 3, 2015 by SALAUDEEN*

**4th grade math**

explain how you know that 21/30 is greater than 2/3. Please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!. Also, I need a FOURTH GRADE ANSWER, nothing else, perferibly using fraction strips.

*Monday, March 2, 2015 by Yellow*

**math**

it takes about 20 minutes to grade a student's paper. How long, in hours, does it take to grade papers for a class of 25 people?

*Friday, February 27, 2015 by brandon*

**statistics**

In a course there is a midterm exam, worth 40% of the course grade, and a final exam worth 60%. On the midterm the mean grade was 80 with a standard deviation of 10, and on the final the mean was 75 with a standard deviation of 15. The correlation between the two exams is 0.6...

*Wednesday, February 25, 2015 by jess*

**mathematics concepts**

Select the answer choice that best describes children's readiness to understand how to tell time. A. Introduce the units of measurement in grade one; expect accurate measurement in second grade. B. It may be introduced in grade 2, but it will be beyond primary before accuracy ...

*Tuesday, February 24, 2015 by lauren*

**Chemistry**

Which electron would have the highest ionization energy for an oxygen atom? A. 2nd B. 1st C. 5th D. 6th If it is the highest I was guessing b or d.

*Monday, December 15, 2014 by Morgan*

**Chemsitry**

What courses should you take in each grade 9,10,11,12 to help you become a pharmacologist. i need courses for each grade

*Thursday, December 11, 2014 by Katherine*

**Math**

An oil company owns two refineries. The daily production limits and operating costs for each refinery are given in the table below. An order is received for 1540 barrels of high-grade oil, 1650 barrels of medium-grade oil, and 2860 barrels of low-grade oil. How many days ...

*Wednesday, December 10, 2014 by LJ*

**Algebra 1**

Describe how the graphs of y =IXI nand ym = IXI -15 are related. 1- the graphs have the same shape,. The y intercept of the 2nd graph is -15 2-the graphs have the same y intercept. The 2nd graph is steeper than y= absolute x 3- the 2 graphs are the same 4- the graphs have the ...

*Sunday, December 7, 2014 by Steve*

**7th grade math**

Can you check these? 1. Olivia typed 2 pages in 15 minutes. Write an equation relating the number of minutes m to the number of pages typed. How long will it take her to type 10 pages at this rate? Ans: 15/2 = 7.5 = 7.5 * 10 = 75 minutes 2. If the ratio of Type O to non-Type O...

*Saturday, December 6, 2014 by Alexis*

**Thermodynamics**

Drawing a blank studying last minute for an exam: when does a piston cylinder not follow the 2nd law of thermodynamics!!!!

*Tuesday, November 25, 2014 by Joe*

**geometric progression**

the 3rd term of a gpis 10 and the 6th term is 80 find the common ratio No2 if the 2nd term of a gp is 4 and the 5th term is 1over 16,the7th term is_

*Tuesday, November 18, 2014 by jessica*

**physics**

Find the force (in newton) required to lift a mass of 26 kg load with a wheelbarrow (2nd class lever) with the load at 0.75 m from the fulcrum and being lifted at 1.7 m from the fulcrum, assuming ideal conditions.

*Monday, November 17, 2014 by kody*

**I need checking**

Whats the 2nd derivative of 4xsecx I got 4secxtanx+8xsecxtan^2x

*Tuesday, November 11, 2014 by Edward*

**Math**

Whats the 2nd derivative of 4xsecx I got 4secxtanx+8xsecxtan^2x

*Tuesday, November 11, 2014 by Edward*

**Derivatives check**

find the 2nd derivative of y= 1/x +cosxsinx I got 2/x^3 - 2cosxsinx is this right or did I get this wrong

*Tuesday, November 11, 2014 by Edward*

**Math**

Horse race has 14 entrees with no ties what's probability of 4 horses owned by one owner to come in 1st, 2nd, 3rd, 4th.

*Monday, November 10, 2014 by Luigi*

**mathematics**

find the number in an A.P such that the sum of 1st and 3rd term is 12 and the product of 1st and 2nd is 24

*Saturday, November 8, 2014 by mikkymiczy*

**java programming**

Create a java program that will calculate the current grade in a classroom. The program should ask for 5 grades as well as total point value per grade available.

*Monday, November 3, 2014 by JORDAN*

**Grades**

If I have an 80 in my class, and I get a 70 on my test which is 33.33% of my grade, what will my overall grade become

*Monday, October 27, 2014 by Anonymous*

**geometry**

Find the dimensions of a rectangle if the area is 1500 ft to the 2nd power

*Monday, October 20, 2014 by Anonymous*

**Math- AP Calc**

If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult. everything by (-x+4) ...

*Monday, October 6, 2014 by David*

**Math**

If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult. everything by (-x+4) ...

*Monday, October 6, 2014 by David*

**Math**

A sixth grader weighs 90 pounds which is 120% of what he weighed in 4 th grade. How much did he weigh in 4th grade? 90x100=9000/120= 75 So he weighed 75lbs is this correct?

*Sunday, October 5, 2014 by Megan*

**statistics**

how to identify the 5 W's in the problem of the student averages in a High School college algebra class for the last semester. the teacher wanted to see how well the class did and constructed the Distribution from the grade book. who- Students what- average when last semester ...

*Saturday, October 4, 2014 by nina*

**algebra 1**

princess leia is a very good math student. Her average math grade was a 95 on her 15 tests. If Darth Mangham decides to drop her lowest grade, write an expression to determine her new test average.

*Friday, October 3, 2014 by paula*

**CHEM**

H2C=C-C-C-CH3 THERE IS AN H ATTACHED TO THE CARBON AFTER THE FIRST BONG THEN A H2 ON THE 2ND AND 3RD CARBON

*Saturday, September 27, 2014 by M*

**math**

A 500-litre water storage tank is situated at the top of a building at a height of 300 feet.The tank,which is completely full,has two outlet pipes and one inlet pipe.Veeru climbs up to the tank and opens an outlet which can empty a full tank in 10 minutes. At the same time jay...

*Friday, September 26, 2014 by Nitumoni*

**programming**

create a program using java that calculates the current grade in a classroom. the program should ask for 5 grades as well as the total point value per grade available.

*Friday, September 12, 2014 by JORDAN*

**JAVA PROGRAMMING**

Create a java program that will calculate the current grade in a classroom. The program should ask for 5 grades as well as total point value per grade available.

*Friday, September 12, 2014 by JORDAN*

**Grade**

What is my grade if I have two 100's and two 70's

*Tuesday, September 9, 2014 by Anonymous*

**Algebra I**

to determine whether a given number is a solution of an equation. Problem: Is 5 a solution of 10x-xto the 2nd power = 3x-10? my work: 10(5)-25=25 and 50-25=25 so x is not a solution. right or wrong? Im new at this

*Tuesday, September 9, 2014 by Nancy*