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Post New Question
All Questions
+0
234923 Questions
0
358
2
help counting
Three of the eleven students in Mrs. Smith's class were chosen to be interviewed about their class project. If they are interviewed in alphabetical order by last name how many ways can three kids be interviewed?
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Guest
Jul 2, 2021
0
367
1
Help algebra
The non-negative real numbers x ,y and z satisfy the two equations
x^2 + y^2 + z^2 = 9
xy + yz + zx = 6
read more ..
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Guest
Jul 2, 2021
0
422
2
Leap Years
A proposal will make years that end in double zeroes a leap year only if the year leaves a remainder of 200 or 600 when divided by 900. Under this proposal, how many leap years will there be that end in double zeroes between 1996 and 2096?
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Guest
Jul 2, 2021
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524
3
algebra pls help thanks!!!!
The enrollees of 100 students were surveyed on subject they enrolled for the first sem The following data
was collected: 48 enrolled in algebra, 39 enrolled in mechanics, 35 enrolled in physics, 20 enrolled in
algebra and mechanics, 19 enrolled in
read more ..
ElectricPavlov
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Guest
Jul 2, 2021
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465
2
integral of sin2x√(1-cosx) dx
integral of sin2x√(1-cosx) dx
Alan
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Guest
Jul 2, 2021
0
374
2
geometry
In the diagram, U = 30 degrees , arc XY is 170 degrees , and arc VW is 112 degrees. Find arc WY, in degrees.
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Guest
Jul 2, 2021
0
370
1
help polynomial
If f(x) = 2x^5 - x^4 + x^2 - 3, and g(x) is a polynomial such that the degree of f(x) + g(x) is 8, then what is the degree of g(x)?
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Guest
Jul 2, 2021
0
392
1
help quadratic
kx^2 - 70x + 2k = 0
Find the maximum integral value of k for which the above quadratic equation has two distinct real roots.
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Guest
Jul 2, 2021
0
270
1
Helpp
Let $p(x)$ be a monic polynomial of degree 6 such that $p(1) = 1,$ $p(2) = 2,$ $p(3) = 3,$ $p(4) = 4,$ $p(5) = 5,$ and $p(6) = 6.$ Find $p(7).$
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Guest
Jul 2, 2021
0
439
2
+22
Geometry Problem. Please help.
In triangle ABC, angle B = 90 degrees and angle C = 30 degrees. Point D is on line segment BC such that angle ADB = 45 degrees, and DC=10. What is AB?
Thanks,
Hexa
read more ..
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HexaA
Jul 2, 2021
0
395
1
proportion
In physics, Ohm's law says that current through a wire, I, is directly proportional to voltage, V, and inversely proportional to resistance, R
I = V/R.
It's also true that resistance is directly proportional to the length of the
read more ..
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Guest
Jul 2, 2021
0
380
2
Determine the value of $a$.
Determine the value of $a$.
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Guest
Jul 2, 2021
Jul 1, 2021
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372
1
piecewise function
Let
f(x) = 2x + 9 if x < -2
f(x) = 5 - 2x if x >= -2
read more ..
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Guest
Jul 1, 2021
0
477
1
There are 2 boys for every 3 girls in Ms. Johnson's math class. If there are 30 students in her class, what percent of them are boys?
There are 2 boys for every 3 girls in Ms. Johnson's math class. If there are 30 students in her class, what percent of them are boys?
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Guest
Jul 1, 2021
0
402
0
+58
A problem that I really need help on.
Problem: In triangle ABC with incenter I and circumcenter O. Let P be the reflection of A over OI and Q be the second intersection of line OI with the circumcircle of BIC. Prove that lines AI, BC, and PQ concur.
So for this
read more ..
hellothere
Jul 1, 2021
0
414
1
help plz
You have linear functions p(x) and q(x). You know p(2) = 3, and p(q(x)) = 4x + 18 for all x. Find q(1).
Alan
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Guest
Jul 1, 2021
0
231
0
Help polynomials
If f(x) = 2x^5 - x^4 + x^2 - 3, and g(x) is a polynomial such that the degree of f(x) + g(x) is 8, then what is the degree of g(x)?
Guest
Jul 1, 2021
0
389
1
system
If a + b = 8, b + c = 3, and a + c = 5, what is the value of the product abc?
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Guest
Jul 1, 2021
0
400
1
number theory
What is the smallest positive integer n such that 3n = 1356 (mod 27).
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Guest
Jul 1, 2021
0
354
2
Plz help me. Plz.
Find all real numbers $a$ that satisfy \[\frac{1}{a^3 + 7} -7 = \frac{-a^3}{a^3 + 7}.\]
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Guest
Jul 1, 2021
0
499
1
+195
Holp
In triangle $ABC$, $AB = AC$. Point $P$ lies on $\overline{AB}$ such that $CP = BC$. If $\angle APC = 115^\circ$, what is $\angle ACP$ (in degrees)?
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QuestionMachine
Jul 1, 2021
0
381
1
help algebra
The quadratic 2x^2 - 3x + 21 has two imaginary roots. What is the sum of the squares of these roots? Express your answer as a decimal rounded to the nearest hundredth.
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Guest
Jul 1, 2021
0
313
0
help
The n members of a committee are numbered 1 through n. One of the members is designated as the "Grand Pooh-Bah." The n members sit in a row of n chairs, but no member with a number greater than the Grand Pooh-Bah may sit in the seat to the immediate right
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Guest
Jul 1, 2021
0
456
1
For what values of j does the equation have exactly one real solution? Express your answer as a list of numbers, separated by commas.
For what values of j does the equation have exactly one real solution? Express your answer as a list of numbers, separated by commas.
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Guest
Jul 1, 2021
0
415
1
Let be a positive number such that If can be written in simplified form as such that a, b, and c are
Let be a positive number such that If can be written in simplified form as such that a, b, and c are positive integers, what is ?
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Guest
Jul 1, 2021
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