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All Questions
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230466 Questions
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343
2
math problem
We know that 1/13 =0.0769230769230769230769230769230769... When 1/130 is written as a repeating decimal, what is its 130th digit to the right of the decimal point?
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Guest
May 31, 2021
0
405
1
sequences
Recall that a Fibonacci sequence is one in which all entries from the third onward are the sum of the two entries before it. If the 5th and 8th entries of a Fibonacci Sequence are -19 and 79, respectively, then what is the first entry of this sequence?
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Guest
May 31, 2021
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204
0
Help math
A sequence is formed by adding 2 to the triple of the previous term. If the first term is 1, how many multiples of 5 less than 10,000 would be terms of the sequence?
Guest
May 31, 2021
0
314
1
Moth
Discombobulate had 4 times as many stickers as kut g. When kut g gave half of his stickers to Discombobulate, he then had 9 fewer stickers than he had. How many stickers did kut g have at first?
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Guest
May 31, 2021
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364
1
Math
Marisol made 300 cookies. She sold 3/4 of them and 1/3 of the remainder to her neighbor. How many tarts did she have left.
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Guest
May 31, 2021
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448
1
sequence
Define the sequence of positive integers a_n recursively by a_1=3 and a_n=3(a_n- 1) for all n> =2. Determine the last two digits of a_{2007}.
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Guest
May 31, 2021
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392
6
+21
Please Help, I need this done in a few hours!
A cylinder and a cone have the same volume. The cylinder has radius x and height y. The cone has radius 1/3x. Find the height of the cone in terms of y.
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snipezyy
May 31, 2021
0
370
1
Probability
If you were to pick two students out of a class of 7 girls and 6 boys, what is the probability that the students chosen are two boys?
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Guest
May 31, 2021
May 30, 2021
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346
1
Number Theory
What is the largest number k less than 1000 such that the remainder is 1 when k is divided by each of 3, 4, and 5?
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Guest
May 30, 2021
0
323
1
Help algebra
Find the smallest positive integer b for which x^2+bx+2018 factors into a product of two binomials, each having integer coefficients.
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Guest
May 30, 2021
0
272
1
help please
Let
\[f(x) = \left\{
\begin{array}{cl}
-x - 3 & \text{if } x \le 1, \\
\frac{x}{2} + 1 & \text{if } x > 1.
\end{array} <#> \right.\]
Find the sum of all values of x such that $f(x) = 0$.
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Guest
May 30, 2021
0
401
1
probability
Bob plays a game where, for some number n , he chooses a random integer between 0 and n-1 , inclusive. If Bob plays this game for each of the first three prime numbers, what is the probability that the sum of the numbers he gets is greater than
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Guest
May 30, 2021
0
385
1
Algebra help
There are two pairs (x,y) of real numbers that satisfy the equation x + y = 4xy = 5. Given that the solutions x are in the form x = (a \pm b sqrt(c))/d , where a, b, c, and d are positive integers and the expression is completely simplified, what is the
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Guest
May 30, 2021
0
234
0
Statistics help
A poll of 400 people from Dobbs Ferry showed 260 preferred chocolate raspberry coffee while 180 out of 250 in Irvington preferred the same flavor. To test the hypothesis that there is no difference in preferences in the two villages, what is the alternate
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Guest
May 30, 2021
0
363
2
number theory
Modify one digit in the number 31743 can make it a multiple of 281. What is the number after the change?
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Guest
May 30, 2021
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394
1
Interest
How many dollars in interest are earned in two years on a deposit of $10,000 invested at 4.6% and compounded annually? Express your answer to the nearest cent.
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Guest
May 30, 2021
0
371
1
Percent
Two weeks ago, Alice came home from vacation and noticed that a bean plant was growing in her garden. Today, the stalk is 452 centimeters tall, and Alice observed that its height increases by 6% every day. How tall was the plant 2 weeks ago
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Guest
May 30, 2021
0
317
1
algebra
Suppose f(x) is a polynomial of degree 4 or greater such that f(1) = 2, f(2) = 3, and f(3) = -4. Find the remainder when f(x) is divided by (x - 1)(x - 2)(x - 3).
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Guest
May 30, 2021
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282
1
Exponential equation
Find all real solutions x to 4^x - 2^x = 56 + 11*2^x + 8.
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Guest
May 30, 2021
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361
3
Polynomials
What is the degree of the polynomial (x^4+ax^7+bx+c)(x^3+dx^2+e)(x+f)(x^3-8x^2+7x-1), where letters a through f are all nonzero constants?
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Guest
May 30, 2021
0
353
1
Polynomials
Find the constant t such that (5x^2 - 6x + 7)(4x^2 +tx + 10) = 20x^4 - 49x^3 + 108x^2 - 95x + 70.
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Guest
May 30, 2021
0
346
1
Polynomials
If f(x) is a polynomial of degree 3, and g(x) is a polynomial of degree 6, then what is the degree of polynomial 2f(x) + 4g(x)?
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Guest
May 30, 2021
0
319
1
Polynomials
Find the coefficient of x when (7+8x)-3(2+6x+2x^2)+8(1+3x+4x^2+12x^3)+9(7-x^2-8x^3+13x^4) is simplified.
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Guest
May 30, 2021
0
345
2
Functions
If f(x)=g(g(x))-g(x) and g(x)=2x+1, find f(3).
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Guest
May 30, 2021
0
333
2
interest rates
Cedric has deposited 12,000 dollars into an account that pays 5% interest compounded annually.
Daniel has depoisted 12,000 dollars into an account that pays 7% simple annual interest.
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Guest
May 30, 2021
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