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Post New Question
All Questions
+0
230949 Questions
+4
1632
1
+11912
Reflection
An object is placed exactly midway between a concave mirror of radius of curvature 40cm and a convex mirror of radius of curvature 30cm. The mirrors face each other and are 50cm apart. Determine the nature and position of the image formed by successive
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ElectricPavlov
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rosala
Dec 2, 2018
+1
3488
1
+322
Use the Law of Sines to solve the triangle. Round your answers to two decimal places.
Use the Law of Sines to solve the triangle. Round your answers to two decimal places.
B = 2° 45', b = 6.4, c = 5.9
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Ruublrr
Dec 2, 2018
0
1084
2
+1243
Help!
Altitudes AX and BY of acute triangle ABC intersect at H. If angle BAC = 43 degrees and angle ABC = 67 degrees, then what is angle HCA?
Omi67
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Lightning
Dec 2, 2018
0
777
1
Rhombus ABCD has perimeter of 148, and one of its diagonals has length of 24 . What is the area of ABCD
Rhombus ABCD has perimeter of 148, and one of its diagonals has length of 24 . What is the area of ABCD
ElectricPavlov
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Guest
Dec 2, 2018
+2
919
2
+322
Use the half-angle formulas to simplify the expression.
Use the half-angle formulas to simplify the expression.
sqrt((1 + cos(26x)) /2)
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Ruublrr
Dec 2, 2018
Dec 1, 2018
0
1551
3
Show an equation of the tangent to the curve 𝑦 = 𝑥^5 − 3𝑥^2 +𝑥 + 5 at the point (−1, 0) is given by 𝑦 = 12(𝑥 +1)
Show an equation of the tangent to the curve 𝑦 = 𝑥^5 − 3𝑥^2 +𝑥 + 5 at the point (−1, 0) is given by 𝑦 = 12(𝑥 +1) by differentiation
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Guest
Dec 1, 2018
0
807
2
+1243
Not 5 or 65
The number of diagonals in a certain regular polygon is equal to five times the number of sides. How many sides does this polygon have?
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Lightning
Dec 1, 2018
0
721
1
+1243
Help 2
A regular hexagon has perimeter p and area A. Compute
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Lightning
Dec 1, 2018
0
730
1
+1243
Help: not 5 or 35
In a certain regular polygon, the measure of each interior angle is four times the measure of each exterior angle. Find the number of sides in this regular polygon.
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Lightning
Dec 1, 2018
0
886
1
+1243
Polygon Angles
What is the degree measure of angle LOQ when polygon LMNOPQ is a regular hexagon?
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Lightning
Dec 1, 2018
0
2048
1
+1243
Polygon
A square has a side length of 10 inches. Congruent isosceles right triangles are cut off each corner so that the resulting octagon has equal side lengths. How many inches are in the length of one side of the octagon? Express your answer as a decimal to
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Lightning
Dec 1, 2018
0
637
3
Divisor Arithmetic Question
If we let f(n) denote the sum of all the divisors of the integer n, how many integers i exist such that 1 ≤ i ≤ 2010 and f(i)=1+ √i + i?
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Guest
Dec 1, 2018
0
514
1
imaginary numbers equation
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Guest
Dec 1, 2018
0
639
3
Help
How would use solve this using point-slope form? The answer needs to be in slope-intercept form though.
Line c has an equation of y = -8x + 3. Line d includes the point (-1, -2) and is parallel to line
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ElectricPavlov
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Guest
Dec 1, 2018
0
471
1
Please help
Find the smallest positive integer N with the following property: of the three numbers N, N+1, and N+2, one of them is divisible by 2^2,one of them is divisible by 3^2, one is divisible by 5^2,and one is divisible by 7^2.
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Guest
Dec 1, 2018
0
1034
6
If $y>0$, find the range of all possible values of $y$ such that
If y>0, find the range of all possible values of y such that . Express your answer using interval notation.
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Guest
Dec 1, 2018
0
851
2
For how many integer values of $a$ does the equation $x^2 + ax + 5a = 0$ have integer solutions for $x$?
For how many integer values of does the equation have integer solutions for ?
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Guest
Dec 1, 2018
0
1728
2
+235
Last one
Square $ABCD$ has sides of length 4, and $M$ is the midpoint of $\overline{CD}$. A circle with radius 2 and center $M$ intersects a circle with radius 4 and center $A$ at points $P$ and $D$. What is the distance from $P$ to $\overline{AD}$?
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Rollingblade
Dec 1, 2018
0
960
1
+235
Please Explain
Find the largest real number x for which there exists a real number y such that x^2 + y^2 = 2x + 2y.
GYanggg
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Rollingblade
Dec 1, 2018
+8
1
1724
7
+118608
What do answerers want from you?
Answerers want to see you learn!
They want to see that they are helping you to learn.
They want you to ask questions about their answers, they want you to interact with them!
Never just accept an answer that you do not understand.
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Melody
Dec 1, 2018
+1
1974
2
+322
Power Reducing Formula
Use the power-reducing formulas as many times as possible to rewrite the expression in terms of the first power of the cosine.
4 sin^4 2x
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Ruublrr
Dec 1, 2018
0
1332
1
2/3x-4=2/5 rewritten without fractions
2/3x-4=2/5 rewritten without fractions
Rom
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Guest
Dec 1, 2018
+1
1323
2
+322
Power Reducing Formula
Use the power-reducing formulas as many times as possible to rewrite the expression in terms of the first power of the cosine.
7 cos4 x
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Ruublrr
Dec 1, 2018
0
779
1
+1252
I've already asked this, but... (it's interesting, too!)
https://web2.0calc.com/questions/geometry-on-a-cartesian-plane
Thank you very much!
:P
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CoolStuffYT
Dec 1, 2018
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