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Post New Question
All Questions
+0
231263 Questions
+1
2826
2
Find the length of wire
a solid copper sphere of radius 3cm is melted and electric wire of diameter 0.4cm is made out of the copper obtained. find the length of wire?
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Guest
Dec 5, 2017
+1
737
1
+394
help
help
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ladiikeiii
Dec 5, 2017
+19
1221
5
+391
hello
im so boreeeed i finished all my math homework....
off-topic
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Donut
Dec 5, 2017
+1
1037
1
+394
help with this
The shaded areas of the figure may be found by subtracting the area of the unshaded portion from the total area of the figure. Use this approach to find the area of the shaded portion.
A rectangle contains two equally sized cut-outs of triangles.
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hectictar
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ladiikeiii
Dec 5, 2017
+1
775
1
+394
help
A hotel is in the shape of a cylinder, with a circular foundation. The circumference of the foundation is
2 times the radius, increased by 273.92 ft. Find the radius of the circular foundation. Use 3.14 as an approximation for piπ.
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ladiikeiii
Dec 5, 2017
+1
865
1
+394
On a photograph of a triangular piece of land, help
On a photograph of a triangular piece of land, the lengths of the three sides are 3 cm, 7 cm, and 8 cm, respectively. The shortest side of the actual piece of land is 120m long. Find the lengths of the other two sides.
The length
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hectictar
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ladiikeiii
Dec 5, 2017
+1
2
3246
1
+394
help with this
Use the diagram to find the measure of exterior angle BCD.
Triangle A B C has angles labeled as follows: A, (18x + 12) degrees; B, 6x degrees; C, unlabeled. Point C lies on Ray A D. The outside angle B C D is labeled (27x - 3) degrees.
left
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hectictar
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ladiikeiii
Dec 5, 2017
+2
784
1
+619
Algebra Help
a) Suppose . Does $f$ have an inverse? If so, find $f^{-1}(20)$.
b) Suppose . Does $g$ have an inverse? If so, find $g^{-1}(25)$
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hectictar
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michaelcai
Dec 5, 2017
+1
7522
3
A median of a triangle
A median of a triangle is a line segment from a vertex of a triangle to the midpoint of the opposite side of the triangle. Below, the three medians of the black triangle are shown in red.
https://latex.artofproblemsolving.com/1/5/5/15593c90ce20b22893a1bd76ac6d5f6e3b61f5bb.png
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Guest
Dec 5, 2017
0
12792
2
+619
Algebra Help
a) Suppose the domain of $f$ is $(-1,1)$. Define the function $g$ by What is the domain of $g$?
b) Suppose the domain of $f$ is $(-1,1)$. Define the function $h$ by What is the domain of $h$?
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hectictar
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michaelcai
Dec 5, 2017
+1
1285
1
Please help
The two lines $y = 4x - 19$ and $2x+y = 95$ intersect. What is the value of $x$ at the point of intersection?
hectictar
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Guest
Dec 5, 2017
+1
1263
1
+619
Some functions that aren't invertible can be made invertible by restricting their domains. For example, the function $x^2$ is invertible if
Some functions that aren't invertible can be made invertible by restricting their domains. For example, the function $x^2$ is invertible if we restrict $x$ to the interval $[0,\infty)$, or to any subset of that interval. In that case, the inverse function
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michaelcai
Dec 5, 2017
+2
3896
2
+619
The function $$f(x) = \frac{cx}{2x+3}$$satisfies $f(f(x))=x$ for all real numbers $x\ne -\frac 32$. Find $c$.
The functionsatisfies $f(f(x))=x$ for all real numbers . Find $c$.
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michaelcai
Dec 5, 2017
+2
3965
6
+619
Triangle $ABC$ is inscribed in equilateral triangle $PQR$, as shown. If $PC = 3$, $BP = CQ = 2$, and $\angle ACB = 90^\circ$, then compute $
Triangle $ABC$ is inscribed in equilateral triangle $PQR$, as shown. If $PC = 3$, $BP = CQ = 2$, and $\angle ACB = 90^\circ$, then compute $AQ$.
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michaelcai
Dec 5, 2017
+2
2450
1
+619
$\overline{BC}$ is a chord of a circle with center $O$ and area $48\pi$. Point $A$ is inside $\triangle BCO$ such
$\overline{BC}$ is a chord of a circle with center $O$ and area $48\pi$. Point $A$ is inside $\triangle BCO$ such that $\triangle ABC$ is equilateral and $A$ is the circumcenter of $\triangle BCO$. What is the area of triangle $ABC$?
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michaelcai
Dec 5, 2017
+2
3431
1
+619
In the figure, $ABCD$ is a square of side length 1, and $M$ and $N$ are the midpoints of sides $\overline{AB}$ and $\overline{CD}$, respecti
In the figure, $ABCD$ is a square of side length 1, and $M$ and $N$ are the midpoints of sides $\overline{AB}$ and $\overline{CD}$, respectively. Find the area of the shaded region.
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michaelcai
Dec 5, 2017
+14
1154
1
+391
I need help
what is Pi cubed? round to nearest 100th.
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Donut
Dec 5, 2017
+1
811
2
+912
Does anyone know how to do Algebra?
Does anyone know how to do Algebra? I need help learning how to do it and I just want someone that will walk me through it but let me answer the questions on my own!!
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AngelRay
Dec 5, 2017
Dec 4, 2017
+3
628
5
my cat
my cat just died an i think i am going to end it all JK but my cat just died and i am sad pls help me.
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Guest
Dec 4, 2017
+2
763
2
+4116
Help.
Help.
Explain the octet rule and give an example of how it is used.
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NotSoSmart
Dec 4, 2017
+1
727
1
+1495
help me please
help me please
Perform the Operations indicated
y2+2y / x2 + 2xy +y2 Divided by y2-4 / x+y
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ManuelBautista2019
Dec 4, 2017
+1
820
1
Scientific Notation
in 2000 the population of Pennysylvanıa was 12,281,054. Round this figure to the nearest hundred thousand. Then write that number in scientific notation.
help plz
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Guest
Dec 4, 2017
+1
716
1
+1495
help me, please
help me, please
perform the operations indicated
y2+2y/x2 + 2xy +y2 Divided by y2 - 4 / x+y
read more ..
hectictar
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ManuelBautista2019
Dec 4, 2017
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