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All Questions
^{+0}
184527 Questions
+1
40
0
Use an Addition or Subtraction Formula to simplify the equation.
Use an Addition or Subtraction Formula to simplify the equation.
cos(𝜃) cos(2𝜃) + sin(𝜃) sin(2𝜃) = 1/2
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Guest
Nov 20, 2020
+1
61
0
trig
Solve the given equation. (Enter your answers as a comma-separated list. Let k be any integer. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.)
cos(2𝜃) = 13 sin(𝜃) − 6
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Guest
Nov 20, 2020
+1
42
0
+293
trigonometry
Write the product as a sum.
sin(8x) cos(9x)
Cdortch
Nov 20, 2020
0
52
1
has anyone taken the 2nd practice mathcounts test on aops??
has anyone taken the 2nd practice mathcounts test on aops??
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Guest
Nov 20, 2020
+1
74
1
Мера Шеннона-Основы теории информации. Какое количество информации (в битах) содержится в этом событии?
Девочка наугад вытаскивает из мешка мяч. Известно, что в мешке всего 8 мячей, из них: 4 красных, 2 синих, 1 зеленый и 1 белый. Какое количество информации (в битах) содержится в этом событии? При ответе с дробной частью использовать точку в качестве разделителя.
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Guest
Nov 20, 2020
0
39
0
hello speak polish XDD x 2 no2
hello speak polish XDD x2no2
Guest
Nov 20, 2020
+1
34
0
+5
Please help me!
b) Suppose a is directly proportional to b but inversely proportional to c . If when and , then what is 2 a = 2 b = 6 c = 9 c when b = 1 and a = 3 ?
hakimstarboy
Nov 20, 2020
0
65
2
Fractions/Decimals
If a person is selling the north half of the northwest quarter of an 880-acre piece of land, how many acres will be left?
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Guest
Nov 20, 2020
0
57
1
Help pls
In how many ways can you arrange the letters of the name of the capital city of Florida while keeping the T as either the first or the last letter? (The name of the city is Tallahassee)
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Guest
Nov 20, 2020
0
42
0
Suppose the point (1,2) is on the graph of y = f(x)/2.
Suppose the point (1,2) is on the graph of y = f(x)/2. Then there is one point which must be on the graph of f^{-1}(3x)/4. What is the sum of that point's coordinates?
Guest
Nov 20, 2020
0
53
2
Each of eight houses on a street
Each of eight houses on a street is painted brown, yellow, white, or black. Each house is painted only one color and each color is used on at least one house. No two colors are used to paint the same number of houses. In how many ways could the eight houses
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Guest
Nov 20, 2020
0
57
2
polynomial identity
Matilda uses the polynomial identity (2x−y)^2=4x^2−4xy+y^2 to show that 18² = 324.
What values can Matilda use for x and y?
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Guest
Nov 20, 2020
0
61
1
In the figure, what is the area of triangle ABD? Express your answer as a common fraction.
In the figure, what is the area of triangle ABD? Express your answer as a common fraction.
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Guest
Nov 20, 2020
0
56
1
Solve the equation using natural logs. 29e^t/25=1700
Solve the equation using natural logs. 29e^t/25=1700
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Guest
Nov 20, 2020
0
59
1
A 30-60-90 triangle is drawn on the exterior of an equilateral triangle
A 30-60-90 triangle is drawn on the exterior of an equilateral triangle so the hypotenuse of the right triangle is one side of the equilateral triangle. If the shorter leg of the right triangle is 6 units, what is the area of the equilateral triangle?
read more ..
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Guest
Nov 20, 2020
0
3
150
3
-11
help on this challenge problem
A right isosceles triangle is a triangle with two sides that are equal in length and are perpendicular to each other. The medial triangle of triangle ABC is the triangle whose vertices are the midpoints of the sides of triangle ABC. Prove that the
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jeffthememeguy
Nov 20, 2020
0
60
2
Let AB be a diameter of a circle centered at O
Let AB be a diameter of a circle centered at O. Let E be a point on the circle, and let the tangent at B intersect the tangent at E and AE at C and D, respectively. If angle BAE = 41 degrees, find angle CED, in degrees.
read more ..
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Guest
Nov 20, 2020
0
66
1
The graph of the equation
The graph of the equation y = Ax^2 + Bx + C , where are A, B, C integers, is shown below. Find A + B + C.
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Guest
Nov 20, 2020
0
55
1
what is sin(y)?
if sin(x) equals sin_rad((0.0055555555555556*pi)*x) then what is sin(y)?
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Guest
Nov 20, 2020
0
109
1
Write an equation of the line passing through the point
Write an equation of the line passing through the point(2,10)
that is perpendicular to the line 2x+y=17
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Guest
Nov 20, 2020
0
79
2
How many even three-digit positive integers
How many even three-digit positive integers have the property that exactly two of the integer's digits are even?
Imnotamaster
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Guest
Nov 20, 2020
0
57
1
Earth is approximately 93 000 000 mi from the sun. (TRIG)
Earth is approximately 93 000 000 mi from the sun. It revolves around the sun, in an almost circular orbit, in about 365 days. To the nearest mile how far does earth travel in its orbit in one week?
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Guest
Nov 20, 2020
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