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Post New Question
All Questions
+0
231125 Questions
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433
5
find the height
Find the height of the line with the question mark !
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Guest
Feb 4, 2021
0
321
1
Am-Gm
Let $a,$ $b,$ $c$ be positive real numbers. Find the minimum value of \[\frac{(a + b)(a + c)(b + c)}{abc}.\]
My strategy that is incorrect:
Expanding the 3 parenthesis, we get:
read more ..
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Guest
Feb 4, 2021
0
523
2
+4
special right triangles
an equilateral triangle has altitude length of 27 feet determine the length of a side of the triangle
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marksgirl
Feb 4, 2021
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410
5
fraction
The meter stick has 1m long, we want to make sticks 3/10 m long then a stick with the remainder. How many sticks can we make? include a fraction remainder.
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Guest
Feb 4, 2021
0
375
1
geometry
Regular pentagon ABCDE is inscribed in a unit circle. Compute AB*AC.
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Guest
Feb 4, 2021
+1
452
6
Help!
If there are 32 people in my class, 15 of them are girls. 17 are boys. What is the probability of choosing a girl? (% wize)
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Guest
Feb 4, 2021
0
456
2
Find the area of the shaded region.
Find the area of the shaded region.
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Guest
Feb 4, 2021
0
573
2
HELP ASAP ASAP HELLLP
Suppose that we win 3 dollars if we flip a heads on a coin toss, but lose 2 dollars if we flip tails. What is the expected value, in dollars, of our winnings after one flip?
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Guest
Feb 4, 2021
0
317
1
median
The sum of 27 consecutive positive integers is 37 + 39 + 41. What is their median?
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Guest
Feb 4, 2021
0
292
2
help math
My parents recently moved to the Poconos, they got 30 or more inches ofsnow from this last snow storm. It took my Dad 2 hours to clear 10 feet of their driveway. If their driveway is 120 feet long, how long will it take him to clear their driveway?
read more ..
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Guest
Feb 4, 2021
0
415
3
Help plzzzzz
The quadratic $x^2-3x+1$ can be written in the form $(x+b)^2+c$, where $b$ and $c$ are constants. What is $b+c$?
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Guest
Feb 4, 2021
0
473
1
quadratic
There exist constants a, h and k such that
x^2 + 12x + 4 = a(x - h)^2 + k
for all real numbers x. Enter the ordered triple (a,h,k).
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Guest
Feb 4, 2021
0
539
4
What the unit rate: 30 miles in 2 minutes.
What the unit rate: 30 miles in 2 minutes.
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Guest
Feb 4, 2021
0
515
1
Michael spent 7 3/4 hours this week working on his science fair project. Last week, he worked on the project for 9 1/2 hours.
Michael spent 7 3/4 hours this week working on his science fair project. Last week, he worked on the project for 9 1/2 hours. Which is one way Michael can find how many hours he worked on his project in the two weeks?
read more ..
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Guest
Feb 4, 2021
0
488
3
Help Thanks!
Find the smallest value of x such that .
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Guest
Feb 4, 2021
0
377
2
i am thinking of a number
i mutiply it by 2 and 230
i grt the same answer if i multiply by 10 and subtract 10
what is my number
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Guest
Feb 4, 2021
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792
1
Sausages come in packets of 9. Bread rolls come in packets of 6. Colin wants to buy enough packs of sausages and rolls so that there are an
Sausages come in packets of 9. Bread rolls come in packets of 6. Colin wants to buy enough packs of sausages and rolls so that there are an equal number of sausages and rolls. What is the minimum number of sausages and rolls he needs to buy?
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Guest
Feb 4, 2021
0
543
1
Compound
A bank pays an an annual interest rate of 3% compounded quarterly. if the initial deposit (or principal ) is php 50000 find the the balance after 5 years?
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Guest
Feb 4, 2021
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358
1
Angry noises
Let $n$ be a positive integer greater than or equal to $3$. Let $a,b$ be integers such that $ab$ is invertible modulo $n$ and $(ab)^{-1}\equiv 2\pmod n$. Given $a+b$ is invertible, what is the remainder when $(a+b)^{-1}(a^{-1}+b^{-1})$ is divided by $n$?
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Guest
Feb 4, 2021
-1
414
1
+328
Help please
A year N is a leap year if N is a multiple of 4, except when N is a multiple of 100,except when N is a multiple of 400. Based on this description, how many leap years are there between year 2018 and year 3018?
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Potatobird
Feb 4, 2021
0
372
1
system
Md Nur Uddin is a student of Mathematics Discipline Of Khulna University. Now, you have to find his student ID by solving the following system of linear equations:
\[\begin{align*}
-3x+2y-6z &=6 \\
5x+7y-5z &=6 \\
x+4y-2z &=8.
\end{align*}\]
read more ..
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Guest
Feb 4, 2021
+1
478
1
not sure what to do here
The top of a 15 metre high tower makes an angle of elevation of 60º with the bottom of an electric pole and angle of elevation of 30º with the top of the pole. What is the height of the electric pole?(in metres)
asinus
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Guest
Feb 4, 2021
0
401
2
algebra
Find all pairs (x,y) of real numbers such that x + y = 10 and x^2 + y^2 = 56 + xy.
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Guest
Feb 4, 2021
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