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Post New Question
All Questions
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230804 Questions
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517
2
counting problem
How many positive multiples of 3 less than 1000 use only the digits 2 and/or 4 and/or 6?
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Guest
Jan 4, 2021
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243
0
complex numbers
What is the area of the region of the complex plane defined by |z - 3i| < 8?
Guest
Jan 4, 2021
0
406
1
PLS HELP!
https://web2.0calc.com/questions/pls-help_10037
The answers I recieved are a bit confusing (Meaning that either the person didn't explain very well or that I haven't learned about the stuff yet)
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Guest
Jan 4, 2021
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263
0
complex numbers
Find all complex numbers z such that |z - 3| = |z + i| = |z - 1 - 2i|.
Guest
Jan 4, 2021
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253
0
complex number
Suppose z is a complex number such that z^3 = 100 + 25i. Find |z|.
Guest
Jan 4, 2021
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489
1
+421
C&P problem
This is a problem I thought of, is this solution right?
What is the probability of getting two questions correct in a row on a 25 question test with 5 answer choices if you circle ones randomly. i.e. 4 and 5 correct, 24 and 25
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Pangolin14
Jan 4, 2021
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875
4
help
A triangle has a side of length 6 cm, a side of length 8 cm and a right angle. What is the shortest possible length of the remaining side of the triangle? Express your answer in centimeters as a decimal to the nearest hundredth.
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Guest
Jan 4, 2021
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370
1
Pierce has 3 dogs. Spot, Boone, and Lex. All 3 dogs weigh together 199 pounds. Spot weighs 45 pounds more than Boone. Lex weighs 32
Pierce has 3 dogs. Spot, Boone, and Lex. All 3 dogs weigh together 199 pounds. Spot weighs 45 pounds more than Boone. Lex weighs 32 pounds less than Boone. How many pounds does each dog weigh? Write equations to represent
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Guest
Jan 4, 2021
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232
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need help with coordinates
What is the value of k if point P(k, k sqrt(3)) is 4 units from the line 5x+8y=17?
Guest
Jan 4, 2021
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338
2
p**p
A gardener needs to move 2,398 pounds of dirt. He can carry 96 pounds in his wheelbarrow. How many trips will he need to make with the wheelbarrow?
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Guest
Jan 4, 2021
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397
1
complex number
Let z be a complex number satisfying 2z + 3*(Conjugate Z) = -25 - 8i. What is the value of z?
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Guest
Jan 4, 2021
0
476
1
trig question
If 2*cos(x) + 3*sin(x) = sqrt(13), what are cos(x) and sin(x)?
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Guest
Jan 4, 2021
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303
1
Question about Complex Numbers
Simplify \[\left( \frac{3 + i \sqrt{3}}{2} \right)^8 + \left( \frac{3 - i \sqrt{3}}{2} \right)^8.\]
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Guest
Jan 4, 2021
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407
1
quadratic
What is minimum positive value of p so that the quadratic polynomial
\[ \dfrac34 x^2 - (2p+1)x + p^2 +2 = 0 \]
has real roots?
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Guest
Jan 4, 2021
0
1373
10
PLS HELP!
In triangle ABC, angle bisectors AD,CF and BE meet at I. If DI=3, BD=4, and BI=5, then compute the area of triangle ABC.
I know many people already answered this question, but as a challenge, can you guys solve it
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Guest
Jan 4, 2021
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420
2
help with triangle
Let \(\Delta ABC\) be an isosceles triangle with \(AC=CB\), \(AB=7\) and height \(CD = 9\). Denote \(a,b,c,d,e,f,g,h\) and \(i\) to be parallel segments \(AB\) and divide \(CD\) into 9 equal segments.
Compute \(a+b+c+d+e+f+g+h+i\).
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Guest
Jan 4, 2021
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390
1
help with rates
Bill and Peter can paint a 75 ft wall together in 7 hours. because Bill has more experience he can paint alone in two hours quicker than Peter. how long can it take Peter to paint the wall alone? round to the nearest minute.
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Guest
Jan 4, 2021
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551
6
plz help
In the figure, the circles are concentric with centre O. B is a point on the larger circle. D is a point on the smaller circle. BD is joined, provided that BD touches the circle at only one point. Now OB is joined and extended to meet the larger circle
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Guest
Jan 4, 2021
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330
2
polynomial question
Find the remainder when the polynomial x^5 - 4x^3 + 7x^2 - 3 is divided by (x - 1)(x + 2). I think there is a way to do this using Remainder Theorem, but I have no idea how.
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Guest
Jan 4, 2021
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550
4
ABCD is a rectangle
In the figure, $ABCD$ is a rectangle, $AZ = WC = 6, AB = 12,$ and the area of trapezoid
$ZWCD$ is $120$ square units. What is the area of triangle $BQW$?
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Melody
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Guest
Jan 4, 2021
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406
1
HALP ASAP PLZZ
(a) How many cards are in a complete deck of Set?
(b) How many unique sets are there?
When three cards form a set, we can also count the number of attributes for which all three cards are the same. For example, in the set below,
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Guest
Jan 4, 2021
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352
1
help please
For some value d, an isosceles triangle has at least one angle of 2d-40 degrees and at least one angle of d+20 degrees. What are all possible values of d?
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Guest
Jan 4, 2021
+2
567
2
+79
help plz help PWEEEEEZE I RLLY NEED IT ASAP
The ages of the 27 students signed up for the community center's Spanish I class are given below. In the stem and leaf plot shown, $3|2$ represents 32 years old. For this data, the mean is $x$ years, the median is $y$ years, and the mode is $z$ years. What
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Leafie
Jan 4, 2021
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632
2
hey can i have some help with this problem please?
For what value of x is the expression $\frac{2x^3+3}{x^2-20x+100}$ not defined?
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Guest
Jan 4, 2021
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516
2
star polygon
A star-polygon is drawn on a clock face by drawing a chord from each number to the fifth number counted clockwise from that number. That is, chords are drawn from 12 to 5, from 5 to 10, from 10 to 3, and so on, ending back at 12. What number comes after
read more ..
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Guest
Jan 4, 2021
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