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204870 Questions
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93
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Geometry
Find the radius of the sphere which passes through points A, B, C and D in space if angle BAC = angle BAD = angle CAD = 90 degrees and AB = AC = AD = 6.
Guest
Jun 11, 2021
0
110
1
Algebra
Find the smallest value of x such that x^2 + 10x + 25 = 4.
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Guest
Jun 11, 2021
0
123
1
Need help
Twelve hungry teenagers can devour a very large pizza in 20 minutes. How many teenagers would it take to finish a very large pizza in 18 minutes? (Assume that all teenagers eat pizza at the same rate.)
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Guest
Jun 11, 2021
0
141
1
Help algebra
If x = \sqrt{2006} and y = \sqrt{2007}, what is the simplified value of (x + y)^2 + (x - y)^2?
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Guest
Jun 11, 2021
0
120
1
Math
Hot dogs come in packs of 12. Buns come in packs of 16. What is the fewest number of hot dogs or buns you can buy to have the same number of each?
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Guest
Jun 11, 2021
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100
1
Functions
Let f(x) = 1/(x - 8). Find the largest x that is not in the domain of g(x) = f(f(x)).
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Guest
Jun 11, 2021
0
129
1
Convert 3 g⋅cm-3 to kg⋅m-3
Convert 3 g⋅cm-3 to kg⋅m-3
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Guest
Jun 11, 2021
0
119
1
geometry
Points L and M lie on a circle centered at O, and the measure of arc LM on this circle is 72 degrees. The circle passing through points O, L, and M is drawn. Find the measure of arc LPM on the larger circle, in degrees.
read more ..
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Guest
Jun 11, 2021
0
116
2
geometry
In triangle ABC, AB=AC and D is a point on line AC so that line BD bisects angle ABC. If AD=DC, what is the measure, in degrees, of angle A?
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Guest
Jun 11, 2021
0
133
4
hmm (bases variables and such)
If A, B and C are non-zero distinct digits in base 6 such that , find B+C in base 6.
Thanks in advance :D
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Guest
Jun 11, 2021
0
90
1
geometry
In a certain iscoceles right triangle, the altitude to the hypotenuse has length 4. What is the area of the triangle?
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Guest
Jun 11, 2021
0
119
1
physics
Amy measured the density of copper as 7.2 × 103 kg.m-3. Jamie measured it as 8.1 × 103 kg.m-3. (a) Calculate the percent difference between the two measurements. (b) If the actual density of copper is 8.93 × 103 kg.m-3, calculate the percent error in each
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Guest
Jun 11, 2021
0
113
1
trig
Find the measure of the indicated angle, in degrees.
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Guest
Jun 11, 2021
0
135
2
Help geometry
Let ABCD be a square with side length 1. Points E and F lie on line BC and line CD, respectively, in such a way that angle EAF=45 degrees If [CEF]=1/8, what is the value of [AEF]?
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Guest
Jun 11, 2021
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70
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Coordinates
How many square units are in the area of the triangle whose vertices are the x- and y- intercepts of the function f(x)=(x−1)^2 (x+8)
Guest
Jun 11, 2021
+1
197
1
+124
Help me please
12 balls numbered 1 through 12 are placed in a bin. Joe produces a list of three numbers by performing the following sequence three times: he chooses a ball, records the number, and places the ball back in the bin. How many different lists are possible?
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NaturalDisaster
Jun 11, 2021
Jun 10, 2021
+1
363
7
+124
Please help me
What is the number of degrees in the acute angle formed by the hands of a clock at 6:44?
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NaturalDisaster
Jun 10, 2021
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120
1
Coordinates
Let line 1 be the graph of 5x+8y=-9. Line 2 is perpendicular to line 1 and passes through the point (10,-12). If line 2 is the graph of the equation y=mx+b, then find. m+b
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Guest
Jun 10, 2021
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188
1
The expression $12y^2-65y+42$ can be written as $(Ay-14)(By-3),$ where $A$ and $B$ are integers. What is $AB + A$?
The expression $12y^2-65y+42$ can be written as $(Ay-14)(By-3),$ where $A$ and $B$ are integers. What is $AB + A$?
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Guest
Jun 10, 2021
0
193
1
Suppose that $\Join$ is an operation defined by $x \Join y = (x+2)(y-3)$. What is $((t) \Join (t+2)) - ((t+1) \Join (t+1))$?
Suppose that $\Join$ is an operation defined by $x \Join y = (x+2)(y-3)$. What is $((t) \Join (t+2)) - ((t+1) \Join (t+1))$?
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Guest
Jun 10, 2021
0
127
1
base numbers
Suppose that A, B, and C are non-zero distinct digits less than 6, and suppose we have A_6 + B_6 = C_6 and B _6 + B_6 + C_6 = AA_6. Find the three-digit number ABC. (Interpret as a base-6 number with digits A and B, not as A times
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Guest
Jun 10, 2021
0
140
3
triangle
The incircle of radius 4 of a triangle ABC touches the side BC at D. If BD=6, DC=10, then what is the area of triangle ABC?
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Guest
Jun 10, 2021
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