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All Questions
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154586 Questions
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329
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Welcome To Web2.0Calc.
We all Welcome You Here to our site and hope you like Being a part of Helping others. We all spend time to help you or others out. Any of us will gladly help you on any math question you have in Mind. We advise that you make a account with us and help out
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off-topic
killersteve27
Feb 11, 2018
-1
529
2
In every numeration system (base b) there is a three-digit integer that is (b+1) times the sum of its digits. In base ten the number is 198.
In every numeration system (base b) there is a three-digit integer that is (b+1) times the sum of its digits. In base ten the number is 198. In base three the number is 121. Find the number in base seven that has this property
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Guest
Feb 11, 2018
0
428
1
how many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have
how many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have
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Guest
Feb 11, 2018
-1
430
1
Liscence
In a certain region all license plates are composed of three letters followed by three numbers, or three numbers followed by three letters. The only restriction is that zero can never be the first ofthe three numbers if the three numbers come first. Find
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Guest
Feb 11, 2018
-1
211
1
How I can solve/simplify x/xsqrt(2)?
Hi,
How can I solve/simplify this fraction?
I know the result is:
but I want the steps, how can
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Melody
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Guest
Feb 11, 2018
-1
703
4
+110
The surface area of a sphere is A pi cm^2
The surface area of a sphere is A pi cm^2 and the volume of the sphere is B pi cm^3 where both A and B are four-digit whole numbers. Find the radius of the sphere.
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Hans007
Feb 11, 2018
-1
303
1
ABSOLUTE VALUE Qs
1. The graph of y = a|x+b|+c passes through points A = (3, 5), B = (7,
11), and C = (13, 17).
Find the values of a,
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Guest
Feb 11, 2018
-1
585
3
+110
if three straws are chosen at random from a set of 9 straws
if three straws are chosen at random from a set of 9 straws whose lengths are 1cm, 2cm 3cm, 4cm, 5cm 6cm, 7cm, 8cm, and 9cm find the probability that the three straws will form a triangle.
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Hans007
Feb 11, 2018
-1
2
652
1
+110
A rectangular prism 3cm by 5cm by 6cm
A rectangular prism 3cm by 5cm by 6cm is painted mauve and is then cut into 1 cm cubes what is the total unpainted surface area of these cubes
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Hans007
Feb 11, 2018
-1
654
1
+110
Three concentric circles
Three concentric circles are drawn such that the area of the smallest circle is equal to the area of each of the rings. If the radius of the largest circle is 12 cm, what is the radius of the smallest circle?
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Hans007
Feb 11, 2018
0
915
10
+110
find how many digits in the base 10 number 9^(9^9) has when written in base nine
Find how many digits in the base 10 number 9^(9^9) has when written in base nine
Melody
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Hans007
Feb 11, 2018
Feb 10, 2018
0
394
2
+844
https://snag.gy/El1yav.jpg
https://snag.gy/El1yav.jpg
Please explain
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YEEEEEET
Feb 10, 2018
0
1883
1
+844
The equation of line L1 is y= 3x - 2
The equation of line L1 is y= 3x - 2
The equation of line L 2 is 3y - 9x + 5 = 0
Show that the two lines are parallel
Please explain each step as i always struggle with these kind of questions.
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YEEEEEET
Feb 10, 2018
0
328
0
+77
Expanding metal math question.....
A strip of metal 2.5 km long is clamped to the ground during the winter with one clamp at each ens. It expands 1m during the hot summer, bulging up in the middle as a result. What is the highest distance, in m, that the metal strip could be above ground
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neurolover25
Feb 10, 2018
0
540
4
+77
Numerical bases?
Find the base of the numeration system in which 135/21 has a zero remainder.
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neurolover25
Feb 10, 2018
0
636
2
+77
3D Measurement question
A pyramid built using three spheres for the base, all touching one another, and having a fourth sphere placed on top, touching all three of the other spheres. Of the radius of each sphere is 5cm, find the height of the pyramid. Please help!
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neurolover25
Feb 10, 2018
-1
234
1
US Savings Bond
Hello folks! I need some help.
I have a $100,000 US treasury savings bond which matures in 2025(consider it 7 years exactly). It pays interest semi-annually as follows:
Year 1 @ 1.50%(half of it every 6 months)
Year 2 @ 1.75%
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Guest
Feb 10, 2018
-1
233
1
need help asap
Let , and . What is the domain of ? Your answer will be of the form . Find .
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Guest
Feb 10, 2018
+2
298
1
+557
composite fuctions
https://vle.mathswatch.co.uk/images/questions/question2233.png
need help quick plz
hectictar
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lynx7
Feb 10, 2018
-1
332
1
Given $\delta(x) = 3x + 8$ and $\phi(x) = 8x + 7$, what is $x$ if $\delta(\phi(x)) = 7$?
Given and , what is if ?
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Guest
Feb 10, 2018
0
623
3
+294
Check my Proofs
Original Question:
1. Rectangle 1 has length x and width y. Rectangle 2 is made by multiplying each dimension of Rectangle 1 by a factor of k, where k > 0.
(a) Are Rectangle 1 and Rectangle
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KennedyPape
Feb 10, 2018
0
737
1
+113
Two Equilateral Triangles
Given two equilateral triangles whose sides are of length a and b respectively, draw a diagram to show how to construct a third equilateral triangle whose area is the sum of the areas of the other two triangles. (By "construct" we mean straightedge
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jonathanxu999
Feb 10, 2018
0
497
2
+110
The number 15 factorial ends in p zeros when converted to base 12. Find p
The number 15 factorial ends in p zeros when converted to base 12. Find p
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Hans007
Feb 10, 2018
0
1
1559
2
+110
If the lengths of the two equal sides of an iscoseles triangle
If the lengths of the two equal sides of an isosceles triangle are each x cm find the length of the third side so that the triangle has the maximum area.
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Hans007
Feb 10, 2018
+1
518
3
+113
Long question
Two hundred fence posts are to be placed into the ground in a straight line, 2m apart. The fence posts are stacked in a pile along this same line, 2m from the position of the first post to be put in. Maybell is going to put in the posts one at a time in
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jonathanxu999
Feb 10, 2018
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