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Post New Question
All Questions
+0
234778 Questions
0
347
1
help plz
In a certain rectangle, its length is 10 more than its width. If the area of the rectangle is 264, then what are the dimensions of the rectangle?
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Guest
Aug 13, 2021
0
301
1
+8
Need help, thanks
Suppose we write down the smallest (positive)2 -digit, 3-digit, and 4-digit multiples of 7.
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Looooo
Aug 13, 2021
0
356
1
help algebra
How many gallons of 20% alcohol solution should be added to 40 gallons of a 50% alcohol solution to make a 30% solution?
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Guest
Aug 13, 2021
0
473
2
Algebra
Jared’s stock portfolio grows according to the formula a=2x^2-31x+25, where a is the amount in the portfolio, in thousands, and x is the amount of time the money has been in the portfolio, in months. When will Jared’s portfolio be at a value of 10,000 dollars?
read more ..
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Guest
Aug 13, 2021
0
381
6
Fractions
John bought some pens and pencils. After he sold 1/3 of the pens and 3/5 of the pencils, he had twice as many pens as pencils left. Given John bought 50 more pens than pencils, how many pens and pencils did John have altogether?
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Guest
Aug 13, 2021
+1
425
2
+140
Rational Expression of Polynomials
If , and can be any real number except 1 , what real values can NOT have?
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sherwyo
Aug 13, 2021
0
195
0
Modular arithmetic
What is 2^{-1} (mod 25)? Express your answer as an integer from 0-24 inclusive.
Guest
Aug 13, 2021
0
321
1
can a triangle be formed by having side lengths of 5, 11, and 7?
can a triangle be formed by having side lengths of 5, 11, and 7?
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Guest
Aug 13, 2021
0
368
2
Coordinates
On a Cartesian coordinate plane, points (1,2) and (-7, 4) are opposite vertices of a square. What is the area of the square?
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Guest
Aug 13, 2021
0
324
1
quadratic
Find all solutions to the equation x^2 - 7x = 44.
If you find more than one, then list the values separated by commas. If the solutions are not real, then they should be written in a + bi form.
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Guest
Aug 13, 2021
0
185
0
Simplify
1) 3 – 2(-3) – (+12) ; 2) 10÷(-2) + (-3)(-5); 3) -2√ - 3 x 42 - 5(-2)3 ; 4) (32 -5) – 4 2 ; 5) 8 – 3(2x – 4) – 13;
Guest
Aug 13, 2021
0
320
1
Domain
How many real numbers are not in the domain of the function
f(x) = 1/(x - 64) + 1/(x^2 - 64) + 1/(x^3 - 64) + 1/(x^4 - 64)
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Guest
Aug 13, 2021
0
351
1
Function
Let
f(z) = 2z if z is not real
f(z) = -2z if z is real
read more ..
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Guest
Aug 13, 2021
0
237
1
Help Me PLEASE :(
How many cubic (i.e., third-degree) polynomials f(x) are there such that f(x) has nonnegative integer coefficients and f(1)=9 ?
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Guest
Aug 13, 2021
0
182
0
Just a little probability question
Aidan rolls a pair of fair, six sided dice. Let be the probability that the product of the two numbers at the top is prime. Given that can be written as , where and are relatively prime positive integers, find
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Guest
Aug 13, 2021
0
393
1
By choosing different values of a in the system of equations
By choosing different values of a in the system of equations
x^2 - y^2 = 0
(x-a)^2 + y^2 = 1
It is possible for the number of distinct solutions to be:
A) 0,1,2,3,4 or 5
read more ..
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Guest
Aug 13, 2021
0
403
1
Quadratic
If f(0) = 0, f(1) = 2, f(2) = 9, and ax^2+bx+c=0, what is the value of f(3)?
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Guest
Aug 13, 2021
0
374
1
Polynomial
What is the coefficient of x^3 when 24x^4 + 6x^3 + 4x^2 + 7x - 5 is multiplied by 6x^3 + 3x^2 - 3x + 4 and the like terms are combined?
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Guest
Aug 13, 2021
0
336
1
Quadratic
The amount of money a certain company makes can be represented by the graph y = x^2 - 18x - 33 , where x is the quantity produced. What is the smallest quantity at which the company can produce to break even or make a profit?
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Guest
Aug 13, 2021
0
200
0
function problem
he function f is defined by f(n) = f(n − 1) + f(n − 2). It is also true that f(1) = 3 and f(2) = 10. What is the value of f(6)
Guest
Aug 13, 2021
0
360
1
+17
Let p equal half the circumference of a circle inscribed in equilateral triangle ABC as shown. Let q equal the distance from vertex A to mid
Let p equal half the circumference of a circle inscribed in equilateral triangle ABC as shown. Let q equal the distance from vertex A to midpoint M of the opposite side. What is the value of the ratio p:q? Express your answer as a common fraction in terms
read more ..
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Jastun
Aug 13, 2021
+2
399
2
+68
Help on one question
Let \[f(x) = \left\{
\begin{array}{cl}
x^2+1 &\text{ if }x>5, \\
2x-3 &\text{ if } -5 \le x \le 5, \\
3 &\text{ if } x <-5. <#> \end{array} <#> \right.\]
Find $f(-7)+f(0)+f(7)$
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Bulbous
Aug 13, 2021
0
216
0
Transformations
The line y = 2x - 4 is dilated by a scale factor of and 3/2 centered at the origin. What is the equation of the line after the dilation?
Guest
Aug 13, 2021
0
259
1
help counting
Using the letters A and B, the following two-letter code words can be formed: AA, AB, BB, BA. Using the letters A, B, and C and D, how many different four-letter code words can be formed?
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Guest
Aug 13, 2021
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