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Post New Question
All Questions
+0
230954 Questions
0
243
3
HELPPPP
The sequence is defined by and
Compute .
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Guest
Dec 20, 2021
0
209
1
Geometry
In triangle ABC, D lies on BC such that AD is an angle bisector of BAC. If AB + BD = 25 and AC-CD = 4, what is the length of AD?
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Guest
Dec 20, 2021
0
208
1
geometry
A and B are two points on a circle with center O, and C lies outside the circle, on ray AB. Given AB = 24, BC = 30, and OA = 16, find OC.
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Guest
Dec 20, 2021
0
361
2
+45
Geometry
Square PQRS is inscribed in ABCD. Also, the area of square PQRS is 2/3 the area of square ABCD. Find angle QRS in degrees. (As the diagram suggests, angle QRS < 45).
read more ..
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calicokittycat
Dec 20, 2021
0
215
1
Polynomials
let p(x) = x^2, q(x) = 2x^3+1, and r(x) = 7x^4 - 5x^3 + 6x - 2. Find p(q(x)) + r(x)
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Guest
Dec 20, 2021
0
208
1
Counting
If all multiples of 3 and all multiples of 4 are removed from the list of whole numbers 1 through 1200, then how many whole numbers are left?
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Guest
Dec 20, 2021
0
182
0
Algebra
The solutions of x(x - 3) = 2 may be expressed in the form (a + sqrt(b))/c and (a - sqrt(b))/c, where a, b, and c are prime numbers. Find a + b + c.
Guest
Dec 20, 2021
+2
360
2
+182
Help Melody or CPhill
In improper fraction
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SmartWater
Dec 20, 2021
0
243
2
Probability question
There are 7 students in a class: 2 boys and 5 girls. If the teacher picks a group of $4$ at random, what is the probability that everyone in the group is a girl?
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Guest
Dec 20, 2021
0
210
2
Algebra
The nonzero roots of the equation x^2 + 6k + x = 0 are in the ratio 2:7 . What is the value of k?
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Guest
Dec 20, 2021
0
256
1
Counting
In how many ways can one write the numbers 1, 2, 3, 4, 5, and 6 in a row so that given any number in the row, all of its divisors (not including itself) are not adajcent to it?
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Guest
Dec 20, 2021
0
293
1
Counting
An 8 by 8 checkerboard has alternating black and white squares. How many distinct squares, with sides on the grid lines of the checkerboard (horizontal and vertical) and containing at least 12 black squares, can be drawn on the checkerboard?
read more ..
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Guest
Dec 20, 2021
0
293
2
Inequality
Solve the inequality 2x - 5 < -x - 12. Give your answer as an interval.
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Guest
Dec 20, 2021
0
173
0
Polynomials
The polynomial function P(x) = 4x^4 - 7x^3 + mx^2 + nx + 6 has (x-1) as one of its factors. When it is divided by (x+1), the remainder is 30. Algebraically determine the values of m and n.
Guest
Dec 20, 2021
0
301
3
Factor
Completely factor the following expression:
(9x^5 + 25x^3 - 4) - (x^5 - 8x^3 - 4)
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Guest
Dec 20, 2021
0
405
3
help me
Compute. \[ (50 + 72i)^2 - (50 - 72i)^2 \]
Melody
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Guest
Dec 20, 2021
0
479
2
help
Write in the form $a \sqrt b$, where $a$ and $b$ are positive integers: \[\frac{1}{\sqrt{2}} +\frac{3}{\sqrt{8}} + \frac{6}{\sqrt{32}}.\]
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Guest
Dec 20, 2021
0
234
2
Decimal to Fraction
Convert 0.123456789 to a fraction.
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Guest
Dec 20, 2021
0
208
1
Algebra
Find all values of x such that sqrt(4x^2) - sqrt(x^2) = 16.
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Guest
Dec 20, 2021
0
188
0
Algebra
For some real number the polynomial $8x^3 - 4x^2 - 80x + 112$ is divisible by (x - r)^2. Find r.
Guest
Dec 20, 2021
0
223
1
Geometry
The square shown is divided into 4 congruent rectangles. If the perimeter of the square is 150 units, what is the perimeter of one of the four congruent rectangles?
read more ..
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Guest
Dec 20, 2021
0
337
1
+58
Math
1/3 of the 6 dozen fruits in a fruit seller's cost are apples. If 1/4 of all the fruits are oranges & the rest are bananas, how many dozen bananas are there in the fruit seller cart?
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swagmastercaillou
Dec 20, 2021
0
249
1
counting
There are between 50 and 60 eggs in a basket. When mohammed counts by 3's,there are 2 eggs left over. When he counts by 5's there are 4 left over. How many eggs are there in basket?
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Guest
Dec 20, 2021
0
236
3
show the steps
Gideon spends 1/6 of his monthly budget on his car, 3/8 of his budget on housing, 1/4 of his budget on entertainment, and the remaining $250 on groceries. What is the total amount of his monthly budget?
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Guest
Dec 20, 2021
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