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All Questions
+0
234923 Questions
0
446
3
help
I have a bag with marbles numbered from 1 to 6. Mathew has a bag with marbles numbered from 1 to 12. Mathew chooses 1 marble from his bag and I choose 2 from mine. In how many ways can we choose the marbles (where the order of my choices does matter) such
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Guest
Jul 2, 2021
0
369
1
need help
The equation y = -16t^2 + 60t + 54 describes the height (in feet) of a ball thrown upward at 60 feet per second from a height of 54 feet from the ground, where represents time, measured in seconds. In how many seconds will the ball hit the ground? Express
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Guest
Jul 2, 2021
0
382
1
Square roots
The square root of h is greater than 10/3 and less than 42/5. How many integer values of h satisfy this condition?
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Guest
Jul 2, 2021
0
507
1
pls help
How many zeroes do we write when we write all the integers from 1 to 256 in binary?
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Guest
Jul 2, 2021
0
611
5
help pls
Let S be a cube. Compute the number of planes which pass through at least 3 vertices of S
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Guest
Jul 2, 2021
0
231
0
Fibonacci sequence
In the first 103 numbers of the Fibonacci sequence, how many are divisible by 5?
Guest
Jul 2, 2021
0
451
2
quadratics
Wilma and Greg were trying to solve the quadratic equation x^2 + bx + c = 0.Wilma wrote down the wrong value of b (but her value of c was correct), and found the roots to be 1 and 8. Greg wrote down the wrong value of c (but his value of b was correct),
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Guest
Jul 2, 2021
+1
349
2
help with math
The average of the integers N + 1, N + 2, ..., 2N is 20. What is N?
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Guest
Jul 2, 2021
+1
384
1
+20
HELP!!
Please Help!!
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DrBrain824
Jul 2, 2021
0
230
0
help algebra
Find all the values of a for which the equations
x^2 + ax + 1 = 0
x^2 - 3x - a = 0
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Guest
Jul 2, 2021
+1
431
4
+89
2 questions
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justinwh333
Jul 2, 2021
0
405
3
Help me plz.
Find all values of $y$ that satisfy the equation \[\frac{y}{3} + 1 = \frac{y + 3}{y}.\]
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Guest
Jul 2, 2021
0
200
0
need help
Given that x satisfies x^2 - 8x + 1 = 0 , find the value of x + 1/x.
Guest
Jul 2, 2021
0
278
1
help!
At time $t=0,$ a ball is thrown downward at 24 feet per second from a height of 160 feet above the ground. The equation $h = -16t^2 - 24t +160$ describes the height (in feet) of the ball. In how many seconds will the ball hit the ground?
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Guest
Jul 2, 2021
0
311
1
HELPPPPP
What is 64^2 + 145 - 45 * 2 - 14 =
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Guest
Jul 2, 2021
0
431
2
+58
PLEASE HELP!!!
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
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hellothere
Jul 2, 2021
0
371
1
HELP
Eight balloons (two blue, two green, two yellow, and two red) are randomly arranged in a line. Balloons of the same color are indistinguishable from one another.
Find the total number of possible arrangements
Find the
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Guest
Jul 2, 2021
0
392
2
help
A basketball team has ten players, three of which are all stars. How many five player starting lineups can be chosen that include at least two of the all stars?
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Guest
Jul 2, 2021
0
347
3
HELLPPPP
Evaluate $(a^b)^a - (b^a)^b$ for $a = 2$ and $b = 3$.
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Guest
Jul 2, 2021
0
275
1
help geometry
Three circles fit inside a square as shown where two small circles touch a large circle. Given that the radius of the small circles is 3 and the side length of the square is 14, find the radius of the larger circle
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Guest
Jul 2, 2021
0
386
1
help
In a group of ten girls and eight boys on the prom committee two of each must be chosen for the decoration committee. One of the decoration committee members will then be chosen as the leader of the committee. In how many ways can this committee be chosen?
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Guest
Jul 2, 2021
0
386
2
help with counting
The six faces of a three-inch wooden cube are each painted red. The cube is then cut into one-inch cubes along the lines shown in the diagram. How many of the one-inch cubes have red paint on at least one face?
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Guest
Jul 2, 2021
+1
1091
5
+197
Find the vertex of the graph of the equation $y = -2x^2 + 8x - 15.$
Find the vertex of the graph of the equation $y = -2x^2+8x-15$, I've tried this problem and I got (-2, -23) every time, I don't see where I'm going wrong, I need some help with this problem.
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icecreamlover
Jul 2, 2021
0
335
1
Counting
How many strings of length 5 of the letters A, B, C, D, and E contain exactly one A and exactly one D if repetition of letters is allowed?
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Guest
Jul 2, 2021
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