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Post New Question
All Questions
+0
234777 Questions
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344
1
+19
HELP PLS
Let and , for some constants and . If and for , find the sum of all possible values of .
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uttoki
Aug 16, 2021
0
391
1
+80
Help pls
Question:
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jleung
Aug 16, 2021
0
321
1
help counting
Ms. Rathman has 5 nickels, 3 dimes, and 2 quarter. In how many ways can she make change for 50¢?
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Guest
Aug 16, 2021
0
329
1
HELP PLS URGENT
Find the domain of this function
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Guest
Aug 16, 2021
0
256
1
HELP PLS URGENT
Find the domain of the function
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Guest
Aug 16, 2021
0
367
1
+19
PLS HELP
If , find the value of
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uttoki
Aug 16, 2021
0
408
2
+80
Help
Matt, Justin, Tony and Gabriel shared $168. Gabriel received 1/7 of the amount of money received by Matt, Tony and Justin. Matt received 3/4 of the amount of money received by Tony and Justin. Justin received 2/5 as much money as Tony. How much did Justin
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DoctorOcopisMonOct
Aug 16, 2021
0
440
2
+58
Please help, thanks!
Marcus and Kevin had the same number of stamps at first. Marcus gave 1/4 of his stamps away and Kevin gave 1/3 of his stamps away. In the end, Kevin had 15 stamps fewer than Marcus. How many stamps did Marcus give away?
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swagmastercaillou
Aug 16, 2021
0
250
1
help counting
Farmer Ben has only ducks and cows 24 in total. He can’t remember how many of each hehas. He knows that the animals have a total of 66 legs. Assuming that each animal has all legs intact and no extra limbs, how many of each animal does farmer Ben have?
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Guest
Aug 16, 2021
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191
0
help Algebra
Given that 1/x + 1/y = 1/3 and xy + x + y = 4, compute x^2*y + x*y^2.
Guest
Aug 16, 2021
0
220
0
Proportion
The values of x and y are always positive, and x^2 and y^2 vary inversely. If y is 10 when x is 12, then find x when y is 4000.
Guest
Aug 16, 2021
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199
0
Geometry
Let A, B, C be points on circle O such that AB is a diameter, and CO is perpendicular to AB. Let P be a point on OA, and let line CP intersect the circle again at Q. If OP = 20 and PQ = 8, find r^2, where r is the radius of the
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Guest
Aug 16, 2021
0
346
1
Geometry
Circle O is tangent to AB at A, and angle ABD = 90 degrees. If AB = 12 and CD = 16, find the radius of the circle.
read more ..
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Guest
Aug 16, 2021
0
282
1
Inequality
Let a_1, a_2, ..., a_n be real numbers such that a_1^2 + 2a_2^2 + ... + na_n^2 = 1. Find the maximum value of (a_1 + 2a_2 + ... + na_n)^2.
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Guest
Aug 16, 2021
0
262
1
Inequality
Let a_1, a_2, ..., a_{20} be real numbers such that
a_1 + 2a_2 + ... + 20a_{20} = 1,
and a_1^2 + 2a_^2 + ... + 20a_{20}^2 is minimized. Find a_{12}.
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Guest
Aug 16, 2021
0
393
2
+56
Fractions
In the class library, 3/5 of the books are fiction books. 2/3 of the remaining books are non-fiction books. The rest are magazines. There are 10 fewer magazines than non-fiction books in the class library. How many fiction books are there altogether?
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IMTHEBEAST
Aug 16, 2021
0
372
1
+56
Fractions
Vernon has 2/5 as many stamps as Walsh at first. They then sold the same number of stamps each. Vernon now has 57 stamps which is one-third the number of stamps Walsh have. Find the number of stamps each of them had at first.
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IMTHEBEAST
Aug 16, 2021
0
315
1
+56
Fraction (Remainder Concept (Branching))
Benjamin had a sum of money. He spent $288 on a watch and of the remainder on a belt. He had of his money left in the end.
(a) What fraction of the money did he spend on the watch?
(b) How much money did he have at first?
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IMTHEBEAST
Aug 16, 2021
0
277
1
Inequality
Let a_1, a_2, ..., a_n be real numbers such that a_1 + 2a_2 + ... + na_n = 1. Find the minimum value of a_1^2 + 2a_2^2 + ... + na_n^2.
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Guest
Aug 16, 2021
0
308
1
Inequality
If w, x, y, and z are positive real numbers such that w + 2x + 3y + 4z = 8, then what is the maximum value of wxyz?
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Guest
Aug 16, 2021
0
394
1
+120
Maths
Iskander, Anthony and Sean have a total of 555 stamps. Anthony has 13 more stamps than Iskander. Sean has twice the total number of stamps as Anthony and Iskander have. How many stamps does Anthony have?
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florianmanteyw
Aug 16, 2021
0
406
4
+120
maths
In the morning, the ratio of the chicken eggs to the quail eggs at the market was 3 : 2. By the evening, 210 chicken eggs were sold, the ratio of the number of chicken eggs to the quail eggs became 1 : 3. How many eggs were at the market in the end?
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florianmanteyw
Aug 16, 2021
0
399
1
+120
Teachers, can explain how to do this? Thanks.
Kelvin and Patrick had some money in the ratio 3:5. The ratio of Kelvin's expenditure was 3:4. If Kelvin spent 1/3 of his money and Patrick had $55 left, how much money did Kelvin have at first?
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florianmanteyw
Aug 16, 2021
0
198
0
help with triangle
Two of the altitudes of an acute triangle divide the sides into segments of lengths 5,3,1 and x units, as shown. What is the value of x?
Guest
Aug 16, 2021
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