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229722 Questions
0
108
2
I need help with this geometry problem!
in triangle pqr, m is the midpont of PQ let x be the point on QR such that PX bisects QPR and let the perpendicular bisector of PQ intersect PX at Y. If PQ = 36, PR = 22, and MY = 8, find area of PYR
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Guest
Feb 2, 2023
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139
1
+25
plz help
In a sequence of coin flips, a run is a series of consecutive coin flips that are all the same. For example, in the sequence
the red letters form a run.
If a fair coin is flipped four times, what is the expected length of the longest
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TheOneXWZ
Feb 2, 2023
0
127
4
+163
Help Appreciated
so I'm looking for lengths AE and CE
so I'm trying to figure out angle CAE and I determined that 180-DAB+CAD=CAE (DAB = CAD)
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YourAverageDummy
Feb 2, 2023
0
100
2
al 2
The ellipse x^2/8 + y^2/17 = 1 and the line y = 2x-k intersects at exactly two distinct points. What are all the possible values of constant k?
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Guest
Feb 2, 2023
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84
0
Algebra
Help me solve equations
A magician makes potions by combining maple syrup from a magical maple tree with ordinary water. The magician starts with a large supply of two potions: a red potion, which is 50% magical syrup by volume (and
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Guest
Feb 2, 2023
0
91
1
System
How do you solve this system
For a certain value of k, the system
x + y + 3z = 10
read more ..
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Guest
Feb 2, 2023
0
82
0
Binomials
Help with binomials plz
The function f(n) satisfies
binom(2n)n - binom(2n + 1)(2n) = f(n) *binom(2n + 1)(n + 1)
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Guest
Feb 2, 2023
0
85
0
Counting
Plz help this is hard
We call a number cozy if every digit in the number is either even or next to an even digit. For example, a number is cozy if every digit in the number is either a 2 or next to a 2. For example,
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Guest
Feb 2, 2023
Feb 1, 2023
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85
0
Expected value
I need help with these
Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have a 5 on them.
(a) What is the expected value of the number shown when we draw a single slip of paper?
(b)
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Guest
Feb 1, 2023
0
76
0
Counting
Can anyone help plz?
A debate team consists of 5 freshmen and 4 sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so at least two of the sophomores are standing next to each other, and
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Guest
Feb 1, 2023
0
85
0
+93
Diff Eq Problems, Please Provide Work
4 problems are provided. Write real valued general solutions, draw a phase portrait, and classify the fixed point.
1)
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RandomUser
Feb 1, 2023
0
80
0
Sequence
I need help with sequences
Cai writes down the list of positive integers, excluding squares and cubes and all perfect powers. His sequence starts
2, 3, 5, 6, 7, 10, 11, ...
What is the 100th term in Cai's list?
<
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Guest
Feb 1, 2023
0
80
0
Probability
Help with geometric probability
Right triangle XYZ has legs of length XY = 12 and YZ = 6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 20?
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Guest
Feb 1, 2023
0
117
1
how?
How would i do y=-5x+4
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Guest
Feb 1, 2023
0
77
0
Counting
I have counting problem
There are 97 students in South High School. South High School offers only Chinese and Spanish. There are more students in Chinese than in Spanish, and every student takes at least one language. If students
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Guest
Feb 1, 2023
0
101
1
Counting
Help plz with counting
At my office, 16 people own cats, people own dogs, and people own both cats and dogs. How many people own a cat or a dog?
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Guest
Feb 1, 2023
0
85
0
What is the ratio of surface to area volume for a sphere with the following measurements? Surface Area = 432 m^2 Volume = 864 m^3
What is the ratio of surface to area volume for a sphere with the following measurements? Surface Area = 432 m^2 Volume = 864 m^3
Guest
Feb 1, 2023
0
88
0
Counting
Plz help with hard counting
At a meeting, five scientists, two mathematicians, five journalists, two biologists, and three politicians are to be seated around a circular table. How many different arrangements are possible
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Guest
Feb 1, 2023
0
82
0
Exponential Functions
Need help with graphs
Each graph below is the graph of an exponential function of the form ka^x (where a > 0). Match each graph with the correct option.
Guest
Feb 1, 2023
0
102
1
Interest Rates
Need help with this
Chuck deposits $2000 into a bank account that compounds annually at an interest rate of . Assuming there are no other transactions, what will the balance be after years, in dollars?
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Guest
Feb 1, 2023
0
81
0
Exponential Functions
Help with exponential functions.
The graph of the exponential function f(x) is shown below. Find f(x)
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Guest
Feb 1, 2023
0
81
0
Geometry
Help how do you solve this
In the diagram below, angle PQR = angle PRQ = angle STR = angle TSR, RQ = 8, and SQ = 2. Find PQ.
Guest
Feb 1, 2023
0
88
0
A cylinder has a height of 2 feet and a radius of 2 feet. What is its volume? Use 𝜋 ≈ 3.14 and round your answer to the nearest hundredth.
A cylinder has a height of 2 feet and a radius of 2 feet. What is its volume? Use 𝜋 ≈ 3.14 and round your answer to the nearest hundredth.
Guest
Feb 1, 2023
0
84
0
Series
How do you deal with weird series
Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i.
read more ..
Guest
Feb 1, 2023
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