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231415 Questions
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280
3
Help!!!(with math)
What two numbers add to 25 and divide to 4?
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Guest
Mar 29, 2022
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205
1
Number Theory
Of the first 2011 numbers, what is the minimum number that we have to draw randomly in order to ensure that there are: a) at least 2 numbers whose difference is exactly 111, and b) whose difference is 111 or greater? Thank you for help.
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Guest
Mar 29, 2022
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360
3
Word problem
A horse-drawn carriage tour company has found that the number of people that take their tour depends on the price charged per customer. The more the company charges for a tour, the fewer people decide to take the tour.
The function c(x)=50+5x represents
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Guest
Mar 29, 2022
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248
2
Quadratic
What real value of t produces the smallest value of the quadratic t^2 -12t - 36 + 18t - 4?
ElectricPavlov
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Guest
Mar 29, 2022
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260
1
geometry
Let XY be a tangent to a circle, and let be a XBA secant of the circle, as shown below. If AX = 16 and XY = 10, then what is AB?
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Guest
Mar 29, 2022
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317
1
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
The value of a car purchased for $20,000 decreases at a rate of 12% per year. What will be the value of the car after 3 years?
ElectricPavlov
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Guest
Mar 29, 2022
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255
1
fraction
What numeral is in the 100th decimal place in the decimal representation of 6/11?
ElectricPavlov
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Guest
Mar 29, 2022
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254
1
Inequality
Let a be the smallest integer satisfying the inequality x^2 - 15 < 12x + 7x - 3, and let b be the largest integer satisfying the same inequality. What is b-a?
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Guest
Mar 29, 2022
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254
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Factoring
Write a^4 - 3a^2 + 9 - 19 as a product of two monic quadratics with integer coefficients.
ElectricPavlov
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Guest
Mar 29, 2022
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266
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graphing
The graph of y=f(x) is shown in red below. For how many values of c is f(c) = -1?
ElectricPavlov
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Guest
Mar 29, 2022
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302
1
Let O be the center of a regular tetrahedron ABCD. find cosAOB
Let O be the center of a regular tetrahedron ABCD. find cosAOB
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Guest
Mar 29, 2022
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239
1
Three vertices of a cube in space are
Three vertices of a cube in space are A = (2,3,0), B = (0,5,4), and C = (4,1,8). Find the center of the cube.
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Guest
Mar 29, 2022
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238
1
Three vertices of a cube in space are A = (2,3,0), B = (0,5,4), and C = (4,1,8). Find the center of the cube.
Three vertices of a cube in space are A = (2,3,0), B = (0,5,4), and C = (4,1,8). Find the center of the cube.
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Guest
Mar 29, 2022
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234
1
Right triangle ABC with lies in plane with
Right triangle ABC with lies in plane with angle C = 90, lies in plane II with BC=3 and AC=4. Segments AR, BS, and CT are drawn perpendicular to, and on the same side of, plane II. If AR=7, BS=6, and CT=10, compute cos (angle RTS).
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Guest
Mar 29, 2022
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271
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Probability
In a class of 40 social sciences students, 10 are not showing any covid-19 signs and every student of the remaining 30 has high fever, chest pain or both. If 15 have high fever and 25 have chest pain. If a student is selected randomly from this group, what
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Guest
Mar 29, 2022
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288
1
The cost C (in dollars) of making a square window with a side length of n inches is represented by C=n^2/5+175 . A window costs $355.
The cost C (in dollars) of making a square window with a side length of n inches is represented by C=n^2/5+175. A window costs $355. What is the side length (in feet) of the window?
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Guest
Mar 29, 2022
Mar 28, 2022
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279
4
if , find .
if , find .
Let x and b be positive real numbers so that Find
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Guest
Mar 28, 2022
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277
1
hw help
If , then find .
i am pretty sure we'd have to apoky the log formulas/rules to this problem, but im not sure how.
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Guest
Mar 28, 2022
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279
2
pls help
The square is divided into 4 parts, W, X, Y and Z. W and X form 1/2 of the square. The area of Y is double of the area of Z, while the ratio of the area of X to the area of W is 1:3. What fraction
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Guest
Mar 28, 2022
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292
4
Area perimeter
This figure is not drawn to scale. It is made up of 3 squares. The ratio of the area of the smallest square to the largest square is 2:9 while the shaded area is 3/7 of the unshaded area. What
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Guest
Mar 28, 2022
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280
1
how many soluions are there to this equation
how many soluions are there to this equation
8x+11=8x+8
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Guest
Mar 28, 2022
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