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Post New Question
All Questions
+0
233058 Questions
0
331
2
Geometry
In the figure, ABCD is a rectangle, AZ=WC=6 units, AB=12 units and the area of trapezoid ZWCD is 150 square units. What is the area of triangle BQW?
read more ..
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Guest
Oct 23, 2021
0
340
1
+6
How to prove a one to one correspondence.
We already know that the definition of one to one correspondence between set A and B
is as follow:
Every element in A
corresponds to exactly one element to B
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kslein
Oct 23, 2021
0
357
1
Geometry
Find the value of x in the diagram below.
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Guest
Oct 23, 2021
0
272
1
PLS HELP!
https://web2.0calc.com/questions/hi-pls-help-asap-thx
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Guest
Oct 23, 2021
0
188
0
Geometry
In the figure, the visible gray area within the larger circle is equal to eight times the area of the white circular region. What is the ratio of the radius of the small circle to the radius of the large circle? Express your answer as a common fraction.
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Guest
Oct 23, 2021
0
376
4
What is the sum of all individual digits from 1 to 100
What is the sum of all individual digits from 1 to 100. In other words, 1+2+3+4+5+6+7+8+9+(1+0)+(1+1)+(1+2) and so on until 100.
Any help would be greatly appreciated!
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Guest
Oct 23, 2021
+1
428
3
+505
Another precalc question...
Find solutions with to the equation
Okay I had an idea for this question:
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MobiusLoops
Oct 23, 2021
0
518
4
+677
Problem with LaTeX
Hello everyone,
I'm having a problem with LaTeX...
read more ..
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Straight
Oct 23, 2021
0
323
1
лол
как называется число с 83 нулями после числа
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Guest
Oct 23, 2021
0
318
2
Sequence
In a certain sequence of numbers, each number after the first is 3 less than twice the previous. If the third number in the sequence is 51, what is the first number of the sequence?
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Guest
Oct 23, 2021
0
332
1
help coordinates
The line y = b-x with 0 < b < 4 intersects the y-axis at P and the line x= 4 at S. If the ratio of the area of triangle QRS to the area of triangle QOP is 9:16, what is the value of b? Express the answer as a decimal
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Guest
Oct 23, 2021
0
320
1
Geometry
Altitudes AX and BY of acute triangle ABC intersect at H. If angle BAC = 43 degrees and angle ABC = 67 degrees, then what is angle AHC?
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Guest
Oct 23, 2021
0
274
1
Geometry
A square has a side length of 10 inches. Congruent isosceles right triangles are cut off each corner so that the resulting octagon has side lengths of 4 and 3*sqrt(2). What is the area of the octagon?
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Guest
Oct 23, 2021
0
255
1
help pls
Square BCFE is inscribed in right triangle AGD, as shown below. If AB = 28 units and CD = 68 units, what is the area of square BCFE?
read more ..
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Guest
Oct 23, 2021
0
268
1
Algebra
Let c be a real number. What is the maximum value of c such that the graph of the parabola y = 3x^2 has at most one point of intersection with the line y = x + c?
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Guest
Oct 23, 2021
0
245
1
Algebra
Find all real values of p such that 2(x + 4)(x - 2p) has a minimum value of $-28$ over all real values of x.
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Guest
Oct 23, 2021
0
351
1
Graphing question
The graph of y = f(x) is shown below.
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Guest
Oct 23, 2021
0
237
1
need help
In right triangle ABC, AB=9, BC=13, and angle B = 90 degrees. Points D and E are midpoints of AB and AC respectively; CD and BE intersect at point X. Compute the ratio of the area of quadrilateral AEXD to the area of triangle EXC.
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Guest
Oct 23, 2021
Oct 22, 2021
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260
1
Counting
Of all the four-digit positive integers containing only digits from the set {2,4,6,8} what fraction of them have at least one of their digits equal to 2?
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Guest
Oct 22, 2021
0
211
0
Geometry problem
In triangle ABC, BAC = 72 and ABC = 60. The incircle of triangle ABC touches sides BC, AC, and AB at D, E, and F, respectively. Find angle DEF in degrees.
Guest
Oct 22, 2021
0
238
1
An algebra problem
Let p(x) be a nonconstant polynomial, where all the coefficients are nonnegative integers. Prove that there exist infinitely many positive integers n such that p(n) is composite.
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Guest
Oct 22, 2021
0
321
1
help with triangle
Find the inradius of triangle JKL if JK=JL=17 and KL=18
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Guest
Oct 22, 2021
0
245
1
Triangles
Triangle ABC is isosceles with angle B congruent to angle C. The measure of angle C is four times the measure of angle A plus 9 degrees. What is the number of degrees in the measure of angle B?
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Guest
Oct 22, 2021
0
280
1
Probability with Or / And
In a certain Algebra 2 class of 22 students, 5 of them play basketball and 11 of them play baseball. There are 3 students who play both sports. What is the probability that a student chosen randomly from the class plays basketball or baseball?
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Guest
Oct 22, 2021
0
333
2
How many divisors of 5400 are not multiples of any perfect square greater than 1?
How many divisors of 5400 are not multiples of any perfect square greater than 1?
I know that there are 48 divisors of 5400 but I don't know how to figure out how many are not multiples of any perfect square greater than
read more ..
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Guest
Oct 22, 2021
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