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0
184
2
+919
Find all real solutions x to 4^x - 2^x = 56.
Find all real solutions x to 4^x - 2^x = 56.
Thanks!
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AnonymousConfusedGuy
Dec 5, 2017
0
122
1
+800
Proving Identity
What two common identities are most useful for proving that 2cos^2x = cos2x+1
I went off starting that cos2x is an identity but stuff wasn't working out...
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Julius
Dec 5, 2017
0
119
2
can u hlp
5 3/5 divided by 4/5
off-topic
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Guest
Dec 5, 2017
0
118
1
+424
Help this problem is killing me i have to know what it is!
In the figure below, ABCD is a parallelogram, AD = 18 and DC = 27. Segments EG (which is a repeating decimal) and FH (which is a repeating decimal) are perpendicular to sides of the parallelogram as shown,
read more ..
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SmartMathMan
Dec 5, 2017
+1
111
1
Pre-Calculus
Hello, all!
In my Pre-Calculus class, we are solving some problems, which I'm afraid I am struggling with. I am interted in learning the processes of how to solve these problems. Thank you in advance for all of your assistance.
read more ..
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Guest
Dec 5, 2017
+1
114
1
+112
â€‹ How tall is the triangle?
The white square is 5cm by 5 cm.
How do I work out the height of the triangle (the line the arrow is pointing to)?
read more ..
hectictar
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Walthamx
Dec 5, 2017
+7
196
25
+526
Play a Game Anyone?
I am bored, it is midnight here, anyone want to play a game?
(Don't know if anyone will participate, but let's see)
One Word Story
read more ..
off-topic
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Gh0sty15
Dec 5, 2017
+1
143
6
+800
Trigonometry?
Hello,
I've been struggling a bit with where to start off from here. If someone could guide me that would be great!
read more ..
CPhill
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Julius
Dec 5, 2017
0
154
3
+1317
Help Me, please
Help Me, please
solve the Equations. Express the fractions answer as a decimal to the nearest tenth.
Solve for x and y
read more ..
Gh0sty15
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ManuelBautista2019
Dec 5, 2017
+1
163
4
+106
have a great day
hope your having a good day and if not stay brave and keep doing what you're doing because you can be a champ if you try
read more ..
off-topic
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foxy02
Dec 5, 2017
+1
116
1
+153
Multiply: 6a2(4a â€“ 5)
Multiply: 6a2(4a â€“ 5)
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Tiffybean
Dec 5, 2017
+2
181
1
+112
In the staircase-shaped region below, all angles that look like right angles are right angles, and each of the eight congruent sides marked
In the staircase-shaped region below, all angles that look like right angles are right angles, and each of the eight congruent sides marked with a tick mark have length 1 foot. If the region has area 53 square feet, what is the number of feet in the perimeter
read more ..
hectictar
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MIRB14
Dec 5, 2017
+1
135
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
109
1
+350
help
help
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ladiikeiii
Dec 5, 2017
+20
181
5
+399
hello
im so boreeeed i finished all my math homework....
off-topic
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Donut
Dec 5, 2017
+1
107
1
+350
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.
read more ..
hectictar
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ladiikeiii
Dec 5, 2017
+1
104
1
+350
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 piÏ€.
read more ..
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ladiikeiii
Dec 5, 2017
+1
108
1
+350
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
read more ..
hectictar
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ladiikeiii
Dec 5, 2017
+1
111
1
+350
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
119
1
+598
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
215
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
read more ..
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Guest
Dec 5, 2017
+1
231
2
+598
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 $h$?
read more ..
hectictar
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michaelcai
Dec 5, 2017
+1
110
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
129
1
+598
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
read more ..
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michaelcai
Dec 5, 2017
+2
205
2
+598
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
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