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Post New Question
All Questions
+0
229738 Questions
+1
557
2
+84
Solve by Elimination.
-10x +8y=-44
4x+8y=40
Solve for X and Y!!
macar0ni
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dadevb124
Feb 5, 2021
0
658
3
Please Help!!
How many four-digit numbers greater than 2999 can be formed such that the product of the middle two digits exceeds 5?
This is what I know so far:
It has to be a four digit number The first digit has to be between 3 and 9 (inclusive) so
read more ..
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Guest
Feb 5, 2021
0
439
1
what is the slope
what is the slope of y = x + 3 and y = -3x + 4
macar0ni
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Guest
Feb 5, 2021
0
365
2
number theory
\[\large 1+2+3+\cdots+10^{2016}\]
How many times appears 2 in the prime factor decomposition of the sum above?
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Guest
Feb 5, 2021
-1
456
2
+84
Solve by system of elimination.
-4x+5y=13
x-5y=-22
Solve for X and Y!!
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dadevb124
Feb 5, 2021
0
298
1
linear functions
You have linear functions p(x) and q(x) . You know p(2) = 3, and p(q(x)) = -4x + 7 for all x. Find q(1).
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Guest
Feb 5, 2021
0
521
4
Find the measure of angle T
Find the measure of angle T
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Guest
Feb 5, 2021
0
496
1
towers of cards
Consecutive towers are built.
The $1^\text{st}$ tower has one floor made of two cards.
The $2^\text{nd}$ tower has two floors made of seven cards.
The $3^\text{rd}$ tower has three floors made of fifteen cards, and so on.
read more ..
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Guest
Feb 5, 2021
+3
548
10
+490
Fun
Because im bored who (Without the use of the internet) Can recite the most didjits of pi. Unfortunatly i cant stop you from using the internet so hopfully theres some honset people out there
read more ..
off-topic
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Elijah
Feb 5, 2021
0
1070
2
+22
Scale Factor HELP!
Verify that Triangle ABC ~ Triangle DEF. Find the scale factor of Triangle ABC to Triangle DEF. Triangle ABC AB=10, BC=16, CA= 20 Triangle DEF DE=25 EF=40 FD=50 K=?
catmg
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lastkings856
Feb 5, 2021
0
261
1
algebra
A positive integer n meets the following conditions:
- n is greater than 1.
- n divided by 3 plus 15 is greater than n divided by 2 plus 1.
How many numbers could be n?
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Guest
Feb 5, 2021
0
651
2
+179
Trig...
In triangle BCD, angle C = 90 degrees, CD = 3, and BD = . What is ?
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vockeyvockvock
Feb 5, 2021
0
292
1
problem from class
A coin bank contains nickels, dimes, and quarters totaling $\$5.45$. Ifthere are twice as many quarters as dimes and 11 more nickels than quarters, how many of each coin are in the bank?
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Guest
Feb 5, 2021
0
404
2
area
Melissa wants to replace the carpeting in her living room and dining room.
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Guest
Feb 5, 2021
0
461
1
+132
binomial theorem
Shown below are rows 1, 2, and 3 of Pascal's triangle.
Let be the sequence, from left to right, of elements in the 2005th, 2006th, and 2007th rows, respectively, with the leftmost element occurring at .
read more ..
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macar0ni
Feb 5, 2021
0
260
0
paths
To go from \(A\) to \(B\), you only can move along \(\nearrow\) and \(\searrow\) and you can't pass through more than one star. How many paths are there to go from \(A\) to \(B\)?
read more ..
Guest
Feb 5, 2021
0
476
2
Is this the correct answer? Pre-Calc
i was just curious as if this is correct or not? If it's not can you show me the correct answer?
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Guest
Feb 5, 2021
0
405
1
Find the value of x
Find the value of x if
\[9^x - 6\cdot 3^x - 55 = 0\]
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Guest
Feb 5, 2021
0
1167
4
+179
Geometry Help
Each point in the hexagonal lattice shown is one unit from its nearest neighbor. How many equilateral triangles have all three vertices in the lattice?
read more ..
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vockeyvockvock
Feb 5, 2021
0
348
1
trigonometry
Simplify \[\large \frac{\tan \beta}{\sec \beta +1} - \frac{\sec \beta -1}{\tan \beta}\]
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Guest
Feb 5, 2021
+3
584
5
+490
Help with algebra stuff
OKay so im clearly bad at algebra
Can someone help? In the problem below i dont understand how a) is factored
read more ..
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Elijah
Feb 5, 2021
+1
414
1
+193
Domain and Range
Let
\[f(x) = \left\{
\begin{array}{cl}
-x + 3 & \text{if } x \le 0, \\
2x - 5 & \text{if } x > 0.
\end{array} <#> \right.\]
How many solutions does the equation $f(f(x)) = 4$ have?
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clairepow
Feb 5, 2021
0
514
3
+179
Domain and range help
What is the domain of the function ?
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vockeyvockvock
Feb 5, 2021
+7
651
4
+268
Pls Help!!!
A 2x2x2 cube is to be constructed using 4 white and 4 black unit cubes. How many different cubes can be constructed in this way?
(Two cubes are not different if one can be obtained by rotating the other.)
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IhaveOBJD
Feb 5, 2021
+1
649
5
help with geometry
PQRS is a rhombus with perimeter = 28 units and PR = 8 units, find b (QT)
macar0ni
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Guest
Feb 5, 2021
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