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All Questions
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230590 Questions
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312
1
Pls help :)
John has a bag of coins in which he keeps all of his pennies, nickels, and quarters and no other coins. The mean value of the coins in his bag is 20 cents. If he were to add one quarter to his bag, the new mean value would be 21 cents. How many quarters
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Guest
Aug 9, 2021
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375
1
+68
Math
Braydon wanted to give each of his friends equal number of stickers for his birthday. if he give each friends 9 stickers, he will be short for 69 stickers. if he gave each friend 4 stickers, there will be 46 stickers left. How many sticekrs can Braydon
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Svtturtles
Aug 9, 2021
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336
1
Answer this question please
Expand $(3+\sqrt{5})^4$. Enter your answer in the form $a + b\sqrt{5}$ for some positive integers $a$ and $b$.
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Guest
Aug 9, 2021
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365
1
math
If an average-sized man with a parachute jumps from an airplane, he will fall 12.5(0.2^t-1) +20t feet in t seconds. How long will it take him to fall 140 feet? (Round your answer to two decimal places.)
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Guest
Aug 9, 2021
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232
1
help plz
The quadratic ax^2+bx+c can be expressed in the form 2(x-4)^2+8. When the quadratic 3ax^2 is expressed in the form n(x-h)^2+k, what is h?
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Guest
Aug 9, 2021
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320
1
Polynomial
If (x + 2)(3x^2 + x + 5) = Ax^2 + Bx^2 + Cx + D, what is the value of A + B - C - D?
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Guest
Aug 9, 2021
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329
1
help
Let x be a positive number such that 2x^2=4x+9. If x can be written in simplified form as such that a, b, and c are positive integers, what is a+b+c?
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Guest
Aug 9, 2021
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356
1
Polynomial
Find the sum of the coefficients in the polynomial 3(3x^7 + 8x^4 - 7) + 7(x^5 + 7x^2 + 5) when it is fully simplified.
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Guest
Aug 9, 2021
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181
0
Graphing
Let f(x) be an even function defined for all real numbers x and let g(x)=f(x+3)-5 You are told that the graph of y=g(x) passes through the point (4,-7) Then the graph of y=g(x) must also pass through the point (a,b) Enter your answer in the form "a,b
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Guest
Aug 9, 2021
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297
1
help coordinates
Write an equation parallel to the line determined by the points (15, -6) and (-3, 13), through: (4, 2)
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Guest
Aug 9, 2021
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245
1
Domain
What is the sum of all values of y for which the expression (y + 6)/(y^2 - 5) is undefined?
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Guest
Aug 9, 2021
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426
3
The probability of snow for each of the next three days is $\frac{2}{3}$. What is the probability that it will snow at least once during tho
The probability of snow for each of the next three days is . What is the probability that it will snow at least once during those three days? Express your answer as a common fraction.
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Guest
Aug 9, 2021
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229
1
Graphing
The graphs of y = 3 - x^2 + x^3 and y = x^3 - 3x + 5 intersect in multiple points. Find the maximum difference between the -coordinates of these intersection points.
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Guest
Aug 9, 2021
0
309
2
Algebra
One ordered pair (a,b) satisfies the two equations ab^4 = 384 and ab^5 = 4608. What is the value of a in this ordered pair?
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Guest
Aug 9, 2021
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230
2
help algebra
Let a and b be real numbers such that a + b = -1. Compute a^2 - b^2 + 2a.
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Guest
Aug 9, 2021
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345
1
Domain
What real values of $x$ are not in the domain of
$f(x)=\frac{1}{(x^2+3x-4)+(x^2+9x+20)}$?
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Guest
Aug 9, 2021
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373
1
need help
Given that 13^(-1) = 29 (mod 47), find 34^(-1) (mod 47), as a residue modulo 47. (Give a number between 0 and 46, inclusive.)
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Guest
Aug 9, 2021
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359
1
Domain
A soccer ball is kicked from the ground with an initial upward velocity of 90 feet per second, The equation h = 16t^22 + 90t gives the height h of the ball after t seconds.
Give the domain and range of function
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Guest
Aug 9, 2021
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313
1
Polynomials
Let f(x) = x^14 - 7x^9 - 3x^2 + 2 and g(x) = 2x^14 + 3x^10 - 6x^8 + 2x - 1. Let b be a constant. What is the smallest possible degree of the polynomial f(x) + b*g(x)?
If a is the constant the the largest possible
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Guest
Aug 9, 2021
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319
1
Algebra
One ordered pair (a,b) satisfies the two equations ab^4 = 384 and ab^5 = 4608. What is the value of a in this ordered pair?
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Guest
Aug 9, 2021
0
324
1
help with quadratic
Complete the square x^2 + 12x + 9
Enter your answer in the form a(x + u)^2 + v, where a, u, and v are replaced by numbers.
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Guest
Aug 9, 2021
0
277
1
HALPPPP! ANSWER NEEDED NOW!! Ps. The answer is not 6.
For a certain value of $k$, the system \begin{align*} x + y + 3z &= 10, \\ -4x + 3y + 5z &= 7, \\ kx + z &= 3 \end{align*}has no solutions. What is this value of $k$?
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Guest
Aug 9, 2021
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302
1
Domain and Range
The range of the function g(x) = 2/(x^2 + 10) can be written as an interval (a,b]. What is a + b?
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Guest
Aug 9, 2021
0
387
1
+31
A mathematician works for t hours per day and solves p problems per hour, where t and p are positive integers and 1
A mathematician works for t hours per day and solves p problems per hour, where t and p are positive integers and 1
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soccerfan123
Aug 9, 2021
0
189
0
need help
Both x and y are positive real numbers, and the point (x,y) lies on or above both of the lines having equations 2x+5y = 10 and 3x+4y = 18. What is the least possible value of 8x+13y?
Guest
Aug 9, 2021
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