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Post New Question
All Questions
+0
234800 Questions
-1
528
1
+206
spheres
A sphere is inscribed in a cube. What is the ratio of the volume of the inscribed sphere to the volume of the cube? Express your answer as a common fraction in terms of $\pi$.
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oliviapow06
Mar 1, 2021
-1
437
1
+206
cylinders
A pipe with inside diameter 10'' is to carry water from a reservoir to a small town in an arid land. Neglecting the friction and turbulence of the water against the inside of the pipes, what is the minimum number of 2''-inside-diameter pipes of the same
read more ..
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oliviapow06
Mar 1, 2021
0
513
1
quadratic forms
Which quadratic function in vertex form has a vertex at (5, 12) and passes through the point (8, 9)?
A) y=−1/3(x+5)2+12
B) y=1/3(x−5)2+12
C) y=1/3(x+5)2−12
D) y=−1/3(x−5)2+12
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Guest
Mar 1, 2021
0
371
1
geometry help please
Two long strips of paper are each 2 inches wide, and they overlap so that the angle between the strips is 30°. What is the number of square inches in the area of the parallelogram formed by the overlap?
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Guest
Mar 1, 2021
-1
436
1
+206
domain and range
If $f(x)$ is a function defined only for $0 \le x \le 1$, and $f(x) = ax+b$ for constants $a$ and $b$ where $a < 0$, then what is the range of $f$ in terms of $a$ and $b$? Express
read more ..
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oliviapow06
Mar 1, 2021
0
358
1
math
Which of the following sets of numbers could not represent the three sides of a triangle?
\{8,14,20\}{8,14,20}
\{4,6,7\}{4,6,7}
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Guest
Mar 1, 2021
0
580
1
polynomial question
The degree of the polynomial p(x) is 11, and the degree of the polynomial q(x) is 7. Find all possible degrees of the polynomial p(x) + q(x).
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Guest
Mar 1, 2021
0
499
1
special right triangles
Find the missing side lengths. Leave your answer as radicals in simplest form.
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Guest
Mar 1, 2021
0
434
2
+195
Help
The graph of $y = f(x)$ is shown below, in red. Find the equation that corresponds to the blue graph.
Enter your answer in the form
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QuestionMachine
Mar 1, 2021
0
361
1
problem with area
What is the area of this figure?
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Guest
Mar 1, 2021
0
981
1
A storekeeper increased the price of hats by 5%
A storekeeper increased the price of hats by 5%.If the price of a hat (after the increase) is $33.60, what
is the original price?
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Guest
Mar 1, 2021
0
361
1
help geometry
Please find x.
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Guest
Mar 1, 2021
0
668
2
help me
Emily has a bag which contains only blue and green marbles. She knows that the ratio of green marbles to blue marbles in the bag is 3 to 1 and that the bag contains a total of 60 marbles. How many of the marbles in the bag are blue?
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Guest
Mar 1, 2021
+1
398
1
+501
Pythagorean Theorem
What is the perimeter, in cm, of quadrilateral $ABCD$ if $\overline{AB} \perp \overline{BC}$, $\overline{DC} \perp \overline{BC}$, $AB=9$ cm, $DC=4$ cm, and $BC=12$ cm?
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ellapow
Mar 1, 2021
0
519
1
+501
Analytic Geometry
Let $A=(0,9)$ and $B=(0,12)$. Points $A'$ and $B'$ are on the line $y=x$, and $\overline{AA'}$ and $\overline{BB'}$ intersect at $C=(2,8)$. What is the length of $\overline{A'B'}$?
read more ..
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ellapow
Mar 1, 2021
+1
389
1
+501
spheres
A steel sphere with a 3-inch radius is made by removing metal from the corners of a cube that has the shortest possible side lengths. How many cubic inches are in the volume of the cube?
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ellapow
Mar 1, 2021
0
518
1
+501
cylinders
What is the radius, in inches, of a right circular cylinder if its lateral surface area is $3.5$ square inches and its volume is $3.5$ cubic inches?
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ellapow
Mar 1, 2021
+1
435
1
+501
domain and range
What is the domain of the real-valued function
$$q(x) = \frac{\sqrt{x}}{\sqrt{1-x^2}}~?$$
Express your answer as an interval or as a union of intervals.
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ellapow
Mar 1, 2021
0
231
0
You have 6 different Algebra books, 5 different Biology books, 4 different Chemistry books, and 3 different copies of the novel Dune.
You have 6 different Algebra books, 5 different Biology books, 4 different Chemistry books, and 3 different copies of the novel Dune.
In how many distinct ways can you arrange:
a) 10 books on a shelf if exactly 4 must be Algebra
read more ..
Guest
Mar 1, 2021
0
298
1
polynomial
The polynomial f(x) satisfies f(x + 1) - f(x) = x + 4. Find the leading coefficient of f(x).
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Guest
Mar 1, 2021
0
382
0
What is the limit of the infinite series?
What is the limit of the infinite series?
∑n=1∞(3n^5/(6n^6+1))
Enter your answer in the box. Enter any fraction as a simplified fraction.
Guest
Mar 1, 2021
0
505
1
Height of Pyramid
Galveston Island has a glass pyramid building with a rainforest ecosystem that tourists can visit while at the beach. The pyramid takes up 4,760 cubic feet of space. The rectangular base of the pyramid is 20 ft by 21 ft. How tall is the glass pyramid?
read more ..
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Guest
Mar 1, 2021
0
393
1
intercepts
What are the x- and y-intercepts of the graphed line below?
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Guest
Mar 1, 2021
0
421
1
i need help with this
Write a quadratic relation in the form 𝑦 = 𝑎𝑥 2 + 𝑏𝑥 + 𝑐 with roots 4 and – 3 and passing through the point (3, -12).
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Guest
Mar 1, 2021
0
417
1
HELP!!!
A 10 ft ladder is placed against a building so that the ladder makes a 78 degree angle with the ground. To the nearest tenth of a foot, at what height does the ladder touch the building?
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Guest
Mar 1, 2021
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