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All Questions
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206977 Questions
0
22
1
Algebra
Find the largest integer k such that the equation 5x^2 - kx + 88 = 0 has no real solutions.
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Guest
Jan 13, 2022
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52
1
Expected Value
Kiran has a sock drawer that has 7 different pairs of matching socks. Every day for a week, he pulls out two socks at random (without replacement). What is the expected number of days that Kiran wears matching socks?
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Guest
Jan 13, 2022
0
25
1
Inequality
Find all real numbers K such that the inequality x^2 - 2(4K-1)x + 15K^2 - 2K- 7> 0 holds for all real x.
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Guest
Jan 13, 2022
0
28
1
math
The size of a typical city park is about 5 acres, or 217,800 square feet. If a developer plans to build two basketball courts in a new city park that are 5,000 square feet each, what percent of the park will be used for other activities?
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Guest
Jan 13, 2022
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23
1
Number Theory
Suppose that x, y, z are positive integers, and such that the product of all three numbers is twice their sum plus one. Find all solutions.
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Guest
Jan 13, 2022
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26
1
Percent
Before the break, Middle School had 200 Students in person. This semester there are more students coming back to in-person at Middle School 240 students. What is the percent increasing?
A. 20%
read more ..
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Guest
Jan 13, 2022
0
25
1
Coordinates
The points (2,3) and lie on a circle whose center is on the x-axis. What is the radius of the circle?
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Guest
Jan 13, 2022
0
26
1
Function Question
f(170)=-14cos(5(170))+15
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Guest
Jan 13, 2022
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19
0
Math problem
In the equation 1/j + 1/k = , both j and k are positive integers. What is the sum of all possible values for k?
Guest
Jan 13, 2022
0
21
0
Algebra
Let x and y be real numbers such that 2(x^2 + y^2) = x + y + 1. Find the maximum value of x - y.
Guest
Jan 13, 2022
0
26
1
Standard to Slope Intercept form
How do I get the slope intercept form of 12y-4x=12 i tried to do it and the answer i got was y=5/2x-8
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Guest
Jan 13, 2022
0
32
3
Geometry
Two sectors of a circle of radius 12 overlap as shown, with P and R as the centers of the respective circles. Determine the area of the shaded region.
read more ..
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Guest
Jan 13, 2022
0
26
0
Algebra
Solve (x+4)^3 + (x+5)^3 = (x+7)^3 + (x-2)^3
Guest
Jan 13, 2022
0
21
0
Graphing
Suppose the graph of y = f(x) includes the points (1,-5), (-2,3) and .
Based only on this information, there are two points that must be on the graph of y = f(x(x)) . If we call those points (a,b) and (c,d) what is ab + cd?
read more ..
Guest
Jan 13, 2022
0
26
1
Binomial coefficients
What is the sum of all integer values $n$ for which $\binom{26}{13}+\binom{26}{n}=\binom{27}{14}$?
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Guest
Jan 13, 2022
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28
1
Counting
In writing the integers from 10 through 99 inclusive, how many times is the digit written?
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Guest
Jan 13, 2022
0
26
1
Inequality
Solve the inequality 2x - 5 <= x + 12. Give your answer as an interval.
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Guest
Jan 13, 2022
0
26
1
+36
I need it
Before the break, The school had 180 Students in virtual learning. This semester there are only 160 students in virtual learning. What is the percent decreasing? (Round to whole percent)
10%
11%
read more ..
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Slimesewer
Jan 13, 2022
0
28
1
Systems of Equations Word Problems
A gym has two machines you want to use. An elliptical trainer that burns 8 calories per minute, and a stationary bike that burns 6 calories per minute. You have 40 minutes to exercise at the gym, and you want to burn 300 calories total using both
read more ..
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Guest
Jan 13, 2022
0
25
0
How to make a break line
איך עושים קו שבר? / How to make a break line
Guest
Jan 13, 2022
0
39
1
Functions
For real numbers x, let
f(x) = x + 2 if x > 3,
f(x) = 2x^2 + 3x + a if x <= 3.
read more ..
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Guest
Jan 13, 2022
+1
34
3
geometry
The interior angles of a convex polygon are in arithmetic progression. The smallest angle is 120 degrees and the common difference is degrees. Find the number of sides of the polygon.
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Guest
Jan 13, 2022
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38
1
Coordinates
Find the distance between the x-intercept and the y-intercept of the graph of the equation
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Guest
Jan 13, 2022
0
27
0
Number Theory
Compute the sum of all positive integers k for which the number k*1984*2 has exactly 21 positive divisors.
Guest
Jan 13, 2022
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