Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
Post New Question
All Questions
+0
234799 Questions
0
375
1
please help me with this precalc question
Angle α lies in quadrant II , and tanα=−12/5 . Angle β lies in quadrant IV , and cosβ=3/5 .
What is the exact value of sin(α+β) ?
sin(α+β) =
read more ..
●
Guest
Apr 2, 2020
0
338
0
Help ASAP
Sam needs to solve 6 math questions and 4 physics questions. He does not want to solve physic questions back to back. How many ways can he arrange the sequence of the problems? Every problem is different.
and
read more ..
Guest
Apr 2, 2020
0
2441
1
please help me with this
Verify the identity.
sin x + sin x tan^2 x=tan x sec x
Drag an expression into each box to correctly verify the identity.
geno3141
●
Guest
Apr 2, 2020
-2
510
1
+288
Hard Questions
How many 7 digit numbers have no repeating digits and 8 and 9 are not adjacent.
A person has 100 candies. He ate 5 candies on the first day. After that he ate at least one candy per day until the candies were all gone. How many
read more ..
●
madyl
Apr 2, 2020
+1
729
3
+343
Find the greatest integer value of b for which the expression has a domain of all real numbers.
Find the greatest integer value of b for which the expression has a domain of all real numbers.
●
●
●
nchang
Apr 2, 2020
0
596
1
+53
Just a question for fun.
At most restaurants, customers pay their server a tip for providing good service.
A typical tip is 15% to 20% of the price of the meal. Most people round the tip to a convenient amount.
* What could be a tip on a restaurant
read more ..
●
uboachan
Apr 2, 2020
0
440
0
+208
english
From the other question
2. On a separate sheet of paper, take three of the theses you formed in Note 10.94 “Exercise 1”, and list the types of evidence you might use in support of that thesis.
read more ..
off-topic
monkeyree1124
Apr 2, 2020
0
625
7
+321
Help Appreciated
read more ..
●
●
●
●
●
●
●
ThatOnePerson
Apr 2, 2020
0
503
0
+208
english
Try to form a thesis for each of the following topics. Remember the more specific your thesis, the better.
Foreign policy Television and advertising Stereotypes and prejudice Gender roles and the workplace Driving and cell phones
Collaboration
read more ..
off-topic
monkeyree1124
Apr 2, 2020
0
722
2
please help and explain
A biology test is worth 100 points and has 36 questions.
a. Multiple-choice questions are worth 2 points each and essay questions are worth 6 points each. How many questions of each type are on the test?
b. Your friend says that it is possible for
read more ..
●
●
Guest
Apr 2, 2020
0
1019
1
Let f(x) = 12x+7 and g(x) = 5x+2 whenever x is a positive integer. Define h(x) to be the greatest common divisor of f(x) and g(x)
Let f(x) = 12x+7 and g(x) = 5x+2 whenever x is a positive integer. Define h(x) to be the greatest common divisor of f(x) and g(x)
●
Guest
Apr 2, 2020
0
540
1
help
Aria has $2 worth of dimes and quarters. She has 13 more dimes and quarters. Determine the number of dimes,x, And the number of quarters,y, that Aria has.
ElectricPavlov
●
Guest
Apr 2, 2020
0
8542
2
36x – 8y2 when x = 3 and y = –6 what is the value
36x – 8y2 when x = 3 and y = –6 what is the value
●
●
Guest
Apr 2, 2020
0
423
1
help
Vondaja is selling tickets to a school play. she sells adults tickets for $6 and student tickets for $3. all together she sells 60 tickets and makes $270. how much of each type of ticket does she sell?
ElectricPavlov
●
Guest
Apr 2, 2020
0
471
1
how to solve?
A survey of 100 bank customers revealed that 58 of them have a savings account, 63 of them have a checking account, 22 of them have a savings account and a loan, 16 of them have a checking account and a loan, 27 of them have only a checking account, 12
read more ..
●
Guest
Apr 2, 2020
+1
1904
5
+34
help
New York and Denver are in different time zones. When it is noon in New York, it is 10 a.m. in Denver. A train leaves New York at 2 p.m. (New York time) and arrives in Denver 45 hours later. What time is it in Denver when the train arrives?
●
●
●
●
●
sloppy
Apr 2, 2020
0
2171
1
Help Please!!!
A person invests 2000 dollars in a bank. The bank pays 4.75% interest compounded quarterly. To the nearest tenth of a year, how long must the person leave the money in the bank until it reaches 3500 dollars?
●
Guest
Apr 2, 2020
0
831
1
Kevin has $4.85 in nickels and dimes. If he has 34 fewer dimes then nickels,how many coins does he has altogether
Kevin has $4.85 in nickels and dimes. If he has 34 fewer dimes then nickels,how many coins does he has altogether
ElectricPavlov
●
Guest
Apr 2, 2020
+7
476
1
+1072
Help Please!!!
This question has been deleted.
●
SpongeBobRules24
Apr 2, 2020
0
490
2
help
The difference between of two numbers, a and b, is 21. The difference of 5 times a and two times b is 18. What are the values of a and b?
●
●
Guest
Apr 2, 2020
+2
797
2
+34
help
Sandy and Mary start at the same time at the top of Mt. Snowbird and hike down on different trails. They meet at the foot of the mountain two hours later. If Sandy hikes at an average speed of 3.75 mph and Mary's average rate is 2.25 mph, find the total
read more ..
●
●
sloppy
Apr 2, 2020
-1
560
2
expression for the product of 3 and the sum of x and 5.
expression for the product of 3 and the sum of x and 5.
●
●
Guest
Apr 2, 2020
+1
481
1
please help
A bag contains purple marbles and yellow marbles, 86 in total. The number of purple marbles is 2 more than 5 times the number of yellow marbles. How many purple marbles are there?
●
Guest
Apr 2, 2020
0
705
2
help
Anna ran to her friend's house at a rate of 8 miles per hour. On the way back, she ran the same route in reverse, but she ran at a rate of 6 miles per hour. If Anna's route is one mile long each way, how many minutes longer did it take her to run back from
read more ..
●
●
Guest
Apr 2, 2020
«
latest
9390
9389
..
6455
6454
6453
6452
6451
..
2
1
»
Post New Question
2 Online Users
Top Users
+118654
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2651
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1836
NotThatSmart
+1758
bader
Sticky Topics
Some guidelines for question askers.
What is Happening 5
Again a number puzzle. Multiply in writing.
Loads of fun printable number and logic puzzles
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
How to upload a picture.
If a question is ticked that does not mean you cannot continue it.
Should you consider anything before you answer a question?
Geometry Thread
PUZZLES
LaTex Coding
/calculator/bsh9ex1zxj
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.