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237665 Questions
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522
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Each vertex of a nine-sided polygon is connected to the other vertices with line segments. How many of these line segments lie inside the polygon?
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Guest
Jun 17, 2020
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443
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plshelp
Two figures are ___ similar if and only if you can use a rigid transformation and/or a dilation to map a figure onto its image
If triangle ABC is congruent to triangle XYZ, then angle A is ___ congruent to angle Z.
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Guest
Jun 17, 2020
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534
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help
If x + 1/x = 3, then find x^4 + 1/x^4.
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Guest
Jun 17, 2020
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683
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hello PLEASE HELP ME how can i say Hello ? in GERMAN
hello PLEASE HELP ME how can i say Hello ? in GERMAN
off-topic
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Guest
Jun 17, 2020
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557
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+212
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Problem: Solution A is an 80% acid solution. Solution B is a 30% acid solution.
(a) Find the amount of Solution A (in mL) that must be added to 500mL of Solution B in order to produce a 70% acid solution.
(b) Find the amount of
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Filliqq
Jun 17, 2020
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424
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Sam colors each tile in a 4 by 4 grid white or black. A coloring is called rotationally symmetric if the grid can be rotated 90, 180, or 270 degrees to achieve the same pattern. Two colorings are called rotationally distinct if neither can be rotated to
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Guest
Jun 17, 2020
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544
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The sum of two numbers is 54.And their difference is 18,what is the value of the larger number?.
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Guest
Jun 17, 2020
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437
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Help
Let be the distinct complex roots of the polynomial Let
In other words, is the product of all numbers of the of the form where and are integers for which Determine
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Guest
Jun 17, 2020
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583
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help
A coin bank contains $3.20.There are twice as many nickels as quarters and half as many dimes as quarters.How many nickels are there in the coin bank?
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Guest
Jun 17, 2020
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499
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Halp!
Let 4ABC be inscribed in circle O with ∠ABC = 36◦ . D and E are on the circle such that AD and CE are diameters of circle O. List all possible positive values of ∠DBE in degrees in order from least to greatest.
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Guest
Jun 17, 2020
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428
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Can someone answer this question correctly
I saw this question and am stuck on it too.
https://web2.0calc.com/questions/halp-plz_10
Can someone give the correct answer?
Guest
Jun 17, 2020
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571
5
Halp!
Let S = {1, 2, 3, ..., 12}. How many subsets of S, excluding the empty set, have an even sum but not an even product?
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Guest
Jun 17, 2020
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650
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help
A triangle in the coordinate plane is formed by the axes and the line 3x + 5y = 30. How many points with integer coordinates lie inside the triangle?
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Guest
Jun 17, 2020
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877
5
HELP ASAP
Every evening, Mr. Fat walks around a square city block once. Beginning at a corner, he would walk the first three sides at 6 feet per second and the final side at 5 feet per second. What is his average speed in feet per second? Express your answer as an
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Guest
Jun 17, 2020
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450
1
Please help quick!
Find AC such that AB= 5sqrt2 and angle b= 30 and angle a=15.
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Guest
Jun 17, 2020
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782
2
HELP ASAP
Andrea has finished the third day of a six day canoe trip. If she has completed 3/7 of the trip's total distance of 169 km, how many km per day must she average for the remainder of her trip?
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Guest
Jun 17, 2020
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421
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help
How many ways can we paint a 10-level house if each floor can be only red, white and green, and there can't be three white floors on top of each other?
In this picture you can see a good and a bad possibility to paint a 4-level house:
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Guest
Jun 17, 2020
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571
1
help
Solve for y, in terms of x: y^2 - 10y = x^2 - 10x.
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Guest
Jun 17, 2020
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1356
1
PLEASE HELP QUICK- GEOMETRY
In triangle ABC, AB = AC. Point P lies on line AB such that CP = BC. If angle APC = 115 degrees, what is angle ACP(in degrees)?
So far I have figured out that the answer is not 65 or 70.
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Guest
Jun 17, 2020
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593
1
help
If the area of the regular hexagon is 90, what is the area of the purple region?
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Guest
Jun 17, 2020
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598
1
help
If the rectangular faces of a brick have their diagonals in the ratio 3 : 2 \sqrt{3} : \sqrt{15}, what is the ratio of the length of the shortest edge of the brick to that of its longest edge?
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Guest
Jun 17, 2020
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