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All Questions
+0
230630 Questions
0
370
1
Help pls
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.
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Guest
Jun 3, 2021
0
342
1
Help with sum
The sum 1^2 + 2^2 + 3^2 + ... + n^2 = n(n + 1)(2n + 1)/6.
What is the value of 21^2 + 22^2 + 23^2 + ... + 40^2 + 41^2 + 42^2?
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Guest
Jun 3, 2021
0
321
1
Algebra
85 more than a square of a number is the same as 22 times the number. What is the number?
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Guest
Jun 3, 2021
+1
500
1
+42
Please help!!!
Consider the lines Let's say that a pair of lines is
if the two lines are either parallel or perpendicular to each other. Among all the pairs of lines shown, how many pairs are good?
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Scythgirl
Jun 3, 2021
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386
1
+52
Nevermind I figured it out
Let p(x) be a polynomial of the form , such that 4 and 6 are roots of p(x). What is the third root?
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ThanksForAllHelp
Jun 3, 2021
+1
345
8
+13
Halp! I am stuck...
Problem:
Find all complex numbers such that
Note: All solutions should be expressed in the form , where and are real numbers.
What I have done so far:
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JonJoseph
Jun 3, 2021
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350
2
HELP!!!
Kai cuts out all the page numbers of a book. He takes each number and cuts the numbers into separate digits (single digit numbers are already separate). Given that the book has 999 pages numbered 1 through 999, what is the sum of all of these digits?
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Guest
Jun 3, 2021
+1
631
6
+505
Why is there a privacy error when I enter the site?
Apparently, it says that web2.0calc's security certificate expired. The only way for me to get onto this site is to go to "advanced" then to "Proceed to web2.0calc (unsafe)". Is it only a problem with me, or is it occurring with everyone?
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textot
Jun 3, 2021
0
414
2
Add on to the cylinder question with (2x and 5x)
Thank you so much CPhil it's one o'clock where Iive and I was actually gonna cry (T-T) you are amazing and super smart.
this might sound dumb but how did you take out pi....
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Guest
Jun 3, 2021
+1
301
1
+42
Please help!!!
Find the value of B -A if the graph of Ax +By = 3 passes through the point (-7, 2), and is parallel to the graph of x + y3 = -5
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Scythgirl
Jun 3, 2021
0
383
1
I have a test tomorrow and I do't know how to do this kind of question (T-T)
The surface area of a cylinder is 972xPi and the diameter of the top circle is 2x and the length is 5x..... solve for x.....tf how do you do this question..
-the answer is 9 i just don't know how to do the question
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Guest
Jun 3, 2021
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374
3
Answer for my eternal gratitude
Solve the inequality . Give your answer as an interval.
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Guest
Jun 3, 2021
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269
0
Help pls
In how many ways can people sit around a round table if no two of the people Pierre, Rosa, and Thomas can sit next to each other? (Seating arrangements which are rotations of each other are treated as the same.)
Guest
Jun 3, 2021
0
364
1
This is to hard I need help
Find a linear inequality with the following solution set. Each grid line represents one unit.
(Give your answer
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Guest
Jun 3, 2021
0
373
2
Please help I’ve been trying for hours!!
Find a linear inequality with the following solution set. Each grid line represents one unit.
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Guest
Jun 3, 2021
0
344
1
Simplest radical form
Simplify sqrt(x*sqrt(x)). Express your answer in simplest radical form in terms of x.
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Guest
Jun 3, 2021
0
355
1
Simplest radical form
When sqrt(112) is simplified, the result is a*sqrt(b), where a is an integer, and b is a positive integer. If b is as small as possible, then what is a + b?
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Guest
Jun 3, 2021
0
344
1
help coordinates
The points (1,-2) and (4,-10) are adjacent vertices of a square. What is the perimeter of the square?
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Guest
Jun 3, 2021
0
378
1
pre-calc trig functions
The minute hand of a clock is 4.5 inches long. What distance does the tip move in 25 minutes?
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Guest
Jun 3, 2021
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477
2
Help please !!!!
For a certain value of k, the system has no solutions.
what is this value of k?
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CPhill
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Guest
Jun 3, 2021
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353
2
Please help!!!
Find the equation whose graph is shown below. Write your answer in standard form.
(Standard form is , where is positive, and , , and are integers with greatest common divisor 1.)
xCorrosive
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Guest
Jun 3, 2021
0
314
1
precalc
In right triangle XYZ with YXZ = 90 degrees, we have XY = 24 and YZ = 28. Find tan Y.
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Guest
Jun 3, 2021
0
388
1
need help fast
What is the slope of a line perpendicular to the line containing the points (4,-7) and (5,-1)\? Express your answer as a common fraction.
ElectricPavlov
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Guest
Jun 3, 2021
0
362
1
help with quadratic
The equation y = -16t^2 + 28t + 144 describes the height (in feet) of a ball tossed up in the air at 28 feet per second from a height of 144 feet from the ground. In how many seconds will the ball reach a height of 150 feet? Round your answer to the
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ElectricPavlov
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Guest
Jun 3, 2021
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