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Post New Question
All Questions
+0
237688 Questions
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341
1
polar graphing
What is the equation of this cardioid? Help would be appreciated!
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Guest
Dec 29, 2021
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253
0
Domain
What is the domain of the function $w(x) = \sqrt{x - 2} + \sqrt[3]{x - 2}$? Express your answer in interval notation.
Guest
Dec 29, 2021
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260
0
Help complex numbers
There exists a complex number of the form z = x + yi, where x and y are positive integers, such that
z^3 + 14 = -74 + ci,
for some integer c. Find z.
Guest
Dec 29, 2021
0
320
1
Seqeunce
Each successive term in the sequence 2048, 128, x, y, ... is obtained by multiplying the previous term by a constant. What is the value of x+y?
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Guest
Dec 29, 2021
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509
7
+11
Geometry problem
The two diagonals of quadrilateral ABCD intersect at E. We know DC=12,CA=21,AB=18,BD=19, and Angle ABD=angle ACD. Find [BEC]/[AED].
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fuhsah
Dec 29, 2021
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322
1
Algebra
Find 2^x if
2^x + 3^y = 13
2^(x + 2) + 3^(y + 1) = 43
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Guest
Dec 29, 2021
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392
3
Please help
Natalie spent 1/4 of a day doing her homework. Kelvin took 2/3 of the time
taken by Natalie to do his homework. How much faster is Kelvin
compared Natalie? (Take 1 day = 24 hours)
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Guest
Dec 29, 2021
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331
2
Geometry
A fence encloses a square field whose sides measure 10m. A horse is tethered on a rope that is attached to a corner post of the field so that the horse is outside the fence.If the rope holding the horse is 20m long, find the total grazing area of the horse
read more ..
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Guest
Dec 29, 2021
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326
1
Need help
If the first three terms of an arithmetic progression are (x+3). (3x-10) and (2x+12), find x.
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Guest
Dec 29, 2021
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341
2
Help asap
Fann has 2 3/5 times the number of stamps that Alex has. What is the ratio of the
number of Alex's stamps to Fann's stamps?
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Guest
Dec 29, 2021
0
451
4
+183
Im not good at Number Theory
The four-digit numeral 3AA1 is divisible by 9. What does A represent.
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SmartWater
Dec 29, 2021
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379
2
Math
One-third of Lemmie's toys exceeds one-fourth of the same toys by 18. What is half of the Lemmie's toys?
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Guest
Dec 29, 2021
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354
4
Kate's brother
When Kate was born, her older brother was 4 less than 1/4 of her mother's age. 8 years later,
her mother was 5 less than 3 times her brother's age. How old is Kate's brother now? Thanks for help.
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Guest
Dec 29, 2021
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364
1
Number Theory
Jai alai balls come in boxes of 8 and 17, so that 25 balls (one small box and one large box) can be purchased without having to break open a box, but 26 balls cannot. Find the maximum number of balls that cannot be bought without breaking boxes.
<
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Guest
Dec 29, 2021
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502
1
Inequality
Find the interval of all x such that $1-3x < x \le 1-x +3x - 7$. Give your answer in interval notation, simplifying any fractions which appear in your answer.
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Guest
Dec 29, 2021
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360
1
Coordinates
Given points P(-3,4) and Q(4,y) in a coordinate plane, for what value y of is the slope of the line through P and Q equal to 1/7?
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Guest
Dec 29, 2021
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335
1
help Algebra
When the expression
1-1x+2x^2-2-3x+3x^2-4+4x-5x^2-6x+7-8x^2
written in the form ax^2 + bx + c, where a, b, and c are non-zero integers, what is the value of a + b + c?
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Guest
Dec 29, 2021
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380
1
Number Theory
As n ranges over the positive integers, what is the maximum possible value for the greatest common divisor of 11n + 3 and 2n + 1?
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Guest
Dec 29, 2021
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292
1
Number Theory
How many two-digit positive integers are congruent to 1 (mod 7)?
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Guest
Dec 29, 2021
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361
1
Geometry
In triangle ABC, AB=5, AC=6, and BC=8. Circles are drawn with centers A, B, and C, so that any two circles are externally tangent. Find the sum of the areas of the circles.
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Guest
Dec 29, 2021
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380
5
Digits
A three-digit even number is given such that the hundreds, tens, and unit digits respectively form a decreasing arithmetic sequence. When two is added to the number, the same order of the digits now forms a geometric sequence. What is the original
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Guest
Dec 29, 2021
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301
1
Probability
The numbers from 1 to 11 are drawn at random. Find the probability that the even numbers will all be drawn before the number 11.
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Guest
Dec 29, 2021
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395
3
need help
To fill an empty cistern, we can use pipe A which would take 20 minutes, or we can use pipe B which would take 15 minutes, or we can use pipe C which would take 12 minutes.
If we turned on all three pipes, how long will it take to fill up the empty
read more ..
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Guest
Dec 29, 2021
0
309
2
plz help ASAP
find
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Guest
Dec 29, 2021
0
313
1
Probability
Two points on the rim of a circle are randomly chosen. What is the probability that the distance between the points is shorter than the side length of a square inscribed in the circle?
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Guest
Dec 29, 2021
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