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All Questions
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231320 Questions
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315
1
Help with algebra
A mathematician works for t hours per day and solves p problems per hour, where t and p are positive integers and 1 < p < 20. One day, the mathematician drinks some coffee and discovers that he can now solve 3p + 1 problems
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Guest
Jul 11, 2021
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321
1
trig
For how many values of 0 <= x < 3600 satisfy sin(x) = -0.73?
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Guest
Jul 11, 2021
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247
1
Number Theory
What is the smallest positive integer that has exactly 2000 divisors? Thank you.
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Guest
Jul 11, 2021
0
434
3
+49
Counting and Probability problem
Suppose we take two fair dice, but change the numbers on the faces. On one die, we'll replace the 2 with a 5, and on the other, we'll replace the 5 with a 2. What is the probability that the sum of the numbers are shown when both are rolled is 7? I tried
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HELPplzplzplz
Jul 11, 2021
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212
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Counting
How many continuous paths from A to B, along segments of the figure, do not revisit any of the six labeled points?
Guest
Jul 11, 2021
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209
0
System
Let (x_1, y_1), (x_2, y_2), ..., (x_n, y_n) be the real solutions to the system
x + 8y = 7
x^3 + 8y^3 = 343/81
Enter x_1 + y_1 + x_2 + y_2 + ... + x_n + y_n.
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Guest
Jul 11, 2021
0
359
2
help geometry
1) Let ABCDE be a regular pentagon. Prove that AC bisects angle BCE and AD bisects angle BDE.
2) In quadrilateral BCDE, CBD = 31 degrees, CED = 47 degrees, BCE = 85 degrees. Find angle BDE.
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Guest
Jul 11, 2021
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194
0
System
For a certain value of k, the system
x + y + 3z = 10
-4x + 8y + 5z = 7
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Guest
Jul 11, 2021
0
198
0
geometry question
Triangle ABC is isosceles with AB = BC. If AC = 20 and [ABC] = 280, then find the perimeter of triangle ABC.
Guest
Jul 11, 2021
0
337
1
Quadratic
The equation y = -16t^2 + 26t + 105 describes the height (in feet) of a ball tossed up in the air at 26 feet per second from a height of 105 feet above the ground. In how many seconds will the ball reach 110 feet? Express your answer as a decimal rounded
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Guest
Jul 11, 2021
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408
1
Number Theory
If $3x+7 \equiv 11$ (mod $16$), then 2x+11 is congruent (mod 16) to what integer between 0 and 15, inclusive?
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Guest
Jul 11, 2021
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380
1
Number Theory
Find $14^{-1}$ (mod $35$), as a residue modulo 35. (Give an answer between 0 and 34, inclusive.)
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Guest
Jul 11, 2021
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354
1
Geometry
Find length BC.
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Guest
Jul 11, 2021
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338
2
Perimeter
Find the perimeter of triangle XYZ.
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Guest
Jul 11, 2021
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390
1
Trig help needed, there's a picture
What are in radians (or fractions)?
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Guest
Jul 11, 2021
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331
2
Help
Consider triangle ABC in the picture below. Angle A=30 degrees. Angle C=45 degrees. Side AB=10.
What are AC and BC?
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Guest
Jul 11, 2021
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357
1
I need help please.
Professor Bloop has another one of his insane experiments in progress. He is designing a machine to remove the shells from hard-boiled eggs all in one piece. He makes a voltage measurement at terminal 23B on his machine and finds it at -5.2 volts. "Amazing!"
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Guest
Jul 11, 2021
0
279
2
Please Help ASAP with all steps
Consider triangle ABC such that AB=24, BC=13 and as shown in the picture below. What are and ?
Thank you, please
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Guest
Jul 11, 2021
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257
1
Percent
At Tomi's middle school, 40% of the students are boys. Fifty percent of the boys chose blue as their favorite color, while 30% of the girl students chose blue as their favorite color. Of the students who chose blue as their favorite color, what fraction
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Guest
Jul 11, 2021
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244
1
Counting question
How many ways are there to divide a group of 6 friends among the basketball team, the soccer team, the track team, and the croquet team? (Each team could have anywhere from 0 to 6 of the friends on it. Assume the friends are distinguishable.)
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Guest
Jul 11, 2021
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449
1
The GCF of 6 and two other numbers is 6. What must be true about the other two numbers?
The GCF of 6 and two other numbers is 6. What must be true about the other two numbers?
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Guest
Jul 11, 2021
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307
1
help coordinates
A line has a slope of -7/3 and its y-intercept is (0,18) . What is its x-intercept?
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Guest
Jul 11, 2021
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346
1
Help Please
Identify a number that is divisible by 8, 6, 4, 16, and 12, which is not divisible by 18, 7, 9, 5, and 15. Describe how you found the number.
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Guest
Jul 11, 2021
0
339
2
Power of a point
In the diagram below, EU = 8, UF = 7,GV = 5, VH = 16, and UV= 8. Find XY.
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Guest
Jul 11, 2021
0
362
3
urgent please help
Mr. Hawkins had received two hundred fifty acres as his head right when he came to the Plymouth Colony. He gave one-eight of his land to his brother. How many acres did he have left?
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Guest
Jul 11, 2021
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