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230833 Questions
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661
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f (n) = {n/2 3n+1 if n is even if n is odd help
f (n) = {n/2 3n+1 if n is even if n is odd
help
Guest
Feb 12, 2021
0
376
1
+193
Floor and Ceiling
How many values of $r$ are there such that $\lfloor r \rfloor + r = 15.5?$
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clairepow
Feb 12, 2021
+1
464
1
+193
Piecewise-Defined Functions
Let
\[p(x,y) =
\begin{cases} x + y &\quad \text{if } x \ge 0 \text{ and } y \ge 0, \\
x - 2y &\quad \text{if } x < 0 \text{ and } y < 0, \\
3x + y &\quad \text{otherwise}.
\end{cases} <#> \]
What is $p(p(1,-1),p(-5,-2))$?
read more ..
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clairepow
Feb 12, 2021
0
384
1
domain
What is the domain of the function
f(t) = 1/((1 - t)^2 - (1 + t)^2)?
Express your answer in interval notation.
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Guest
Feb 12, 2021
0
402
1
+193
Domain
What is the domain of the function
$$j(x) = \frac{1}{x+8} + \frac{1}{x^2+8} + \frac{1}{x^3+8}~?$$
Express your answer as a union of intervals.
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clairepow
Feb 12, 2021
0
251
1
Some help please?
What would x minus x^2 be?
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Guest
Feb 12, 2021
0
329
1
power of point
In the diagram below, EU = 8, UF = 7,GV = 5, VH = 15, and UV= 8. Find XY.
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Guest
Feb 12, 2021
+1
378
1
+193
Two-Variable Word Problem
5 green balls and 2 red balls together weigh 10 pounds, and 1 green ball and 4 red balls together weigh 7 pounds. If all red balls weigh the same amount and all green balls weigh the same, then what is the weight of 8 red and 8 green balls together?
read more ..
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clairepow
Feb 12, 2021
0
517
3
functions help
The function $f(n) = 3f(n-2) - 2f(n-1)$, where $f(2) = 3$ and $f(1) = -1$. What is the value of $f(5)$?
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Guest
Feb 12, 2021
0
398
2
geometry
In rectangle ABCD, shown here, CE is perpendicular to BD. If BC = 3 and DC = 8, what is CE?
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Guest
Feb 12, 2021
0
432
1
isosceles right triangle ABC
In isosceles right triangle ABC, shown here, AC = BC. Point X is on side BC such that CX = 6 and XB = 12, and Y is on side AB such that XY is perpendicular to AB. What is the ratio of BY to YA?
read more ..
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Guest
Feb 12, 2021
0
611
1
how do i multiply 4/3 times 3.14pie times 27, on a calculator??
how do i multiply 4/3 times 3.14pie times 27, on a calculator??
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Guest
Feb 12, 2021
0
380
1
parabola prob
Find the equation of the axis of symmetry of the graph of y = (x - 4)^2 - 10.
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Guest
Feb 12, 2021
0
519
2
number theory
Recall that a perfect square is the square of some integer. How many perfect squares less than 10,000 can be represented as the difference of two consecutive perfect cubes?
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Guest
Feb 12, 2021
0
374
1
need help with graph
The area of the triangle formed by x- and y-intercepts of the parabol y=0.5(x-3.5)(x+k) is equal to 1.5 square units. Find all possible values of k.
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Guest
Feb 12, 2021
0
584
2
pls help
For how many positive integer values of $n$ is $3^n$ a factor of $15!$?
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Guest
Feb 12, 2021
0
464
1
+296
CPhill - last one I need help on
I think one answer for -5pi/ 3 would be pi/3 ???
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lovesosa12
Feb 12, 2021
0
446
2
area of quadrilateral
A quadrilateral has four points A(0,1), B(1,-3), C(5,-2) and D(4,0) as coordinates What is the area of quadrilateral ABCD?
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Guest
Feb 12, 2021
0
499
1
+296
CPhill can you help? I have 2 questions on my final I need answers for.
What is the component form of the vector represented by 2a when a⃗ =〈−2,3〉?
2a = 〈___,___ 〉
read more ..
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lovesosa12
Feb 12, 2021
0
342
2
pls help
When $x = \frac{1}{8}$, evaluate the expression \[-x^\frac{1}{3} + \frac{1}{3}x^{-\frac{2}{3}} - \frac{2}{9}x^{-\frac{5}{3}}.\]
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Guest
Feb 12, 2021
0
437
3
HELP ASAP PLS
Find the last two digits of the following sum: $$5! + 10! + 15! + \cdots + 100!$$
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Guest
Feb 12, 2021
0
393
1
function
Let f(x)=3x^2 - 4x - x^2 + 7x + 8. Find the constant k such that f(x)=f(k-x) for all real numbers x.
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Guest
Feb 12, 2021
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