All Questions ⁺⁰237827 Questions

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Probability

A bag contains 10 counters. 6 of them are white. a counter is taken at random and not replaced. A second counter is taken out of the bag at random. Calculate the probability that both two counters are white.

Guest Oct 20, 2022

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179

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counting

In how many ways can a President and a Vice-President and a Treasurer be chosen from a group of 5 people (assuming that the President and the Vice-President and the Treasurer cannot be the same person)?

Guest Oct 20, 2022

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166

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Function

Let
f(x) = x^2 - 4 if x < 7
f(x) = x + 13 if x >= 7
What is f(f(f(17)))? read more ..

Guest Oct 20, 2022

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3

276

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Lesson 28 Homework 5.2

Adam has 16.45 kg of flour, and he uses 6.4kg to make hot cross buns .The remaining flour is exactly enough to make 15 batches of scones.How much flour,in kg will be in a batch of scones?

Guest Oct 20, 2022

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239

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need help

Solve each of the following systems of equations. Find all solutions.

(a)
x + y = -1 read more ..

Guest Oct 20, 2022

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240

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precalc

Find the smallest positive -intercepts of the graph of
y = cos (12x) + cos(16x) + cos(20x)
and list them in increasing order.
Submit your answer as a list of x-coordinates from least to greatest.

Guest Oct 20, 2022

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201

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help coordinates

Given that (3,15) is on the graph of y = f(x), find a point that must be on the graph of y/2 = 7f(x) - 7. Express your answer as an ordered pair (a,b) where a and b are real numbers.

Guest Oct 20, 2022

+1

268

2

+5

What is the solution to this? I've never seen this notation before.

What is the solution to this? I've never seen this notation before.

NightshadeSilver Oct 20, 2022

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256

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+4

help w/ derivative quotient rule

I tried using the quotient rule for this problem and got:
read more ..

unf4d1ng Oct 20, 2022

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197

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help algebra

For a real number r, let s(r) denote the set of real numbers that can be expressed in the form
a1 r + a2 r^2 + a3 r^3 + ...
with an infinite number of terms, where ai in {0,1}
(a) Show that 1/2 an element in S(1/4)
(b) Show that 1/5 read more ..

Guest Oct 20, 2022

Oct 19, 2022

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266

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+4

I need the answer

An electrician charges an hourly rate of $60, but also charges a fixed fee for making house calls regardless of time spend on the job. One day, the electrician earned a total of $350 for a 5 hour job. Write an equation for C,C, in terms of t,t, representing read more ..

miles Oct 19, 2022

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192

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error

cos (40); This mathematical operation cannot be negative because it is in the first quadrant; Please check this in the simulator. Thank you

Cristina

Guest Oct 19, 2022

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243

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help algebra

Let u and v be the solutions to 3x^2 + 5x + 7 = 2x^2 - 4x - 11. Find u/v + v/u.

Guest Oct 19, 2022

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236

1

i need help

Let c be a real number, and consider the system of quadratic equations
y = 6x^2 - 9x + c - x^2 - x
y = 5x^2 - 3x + x^2 + 2x

For which values of c does this system have:
(a) Exactly one real solution (x,y)
(b) More than read more ..

Guest Oct 19, 2022

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172

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Algebra

Let a and b be real numbers such that a + b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b

Guest Oct 19, 2022

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251

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ASAP HELP

The zoo transferred 131 birds to the safari park over the course of many days.
The zookeeper planned to send the same number of birds each day, except that there might be fewer on the last day, when he would send whatever was left. However, he mistakenly read more ..

Guest Oct 19, 2022

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220

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quadratic

Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 14x + 1. Compute a^3 + b^3.

Guest Oct 19, 2022

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230

1

quadratic

Let a and b be the roots of the quadratic x^2 - 5x + 3 = 2x^2 - 11x + 14. Find the quadratic whose roots are a^2 and b^2.

Guest Oct 19, 2022

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290

3

Quadratic

What is the value of b+c if x^2+bx+c>0 only when x\in (-\infty, 2)\cup(2,\infty)?

Guest Oct 19, 2022

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254

1

help plz

In November's Math Meet, the Little Monsters of Beast Academy solved 1/3 of the problems. In March's Math Meet, they solved 2/7 of the problems. (There might be different numbers of problems asked in November and March.)
In total, the Little Monsters read more ..

Guest Oct 19, 2022

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269

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Help,please! due soon...

1. I run a book club with n people, not including myself. Every day, for 365 days, I invite three members in the club to review a book. What is the smallest positive integer n so that I can avoid ever having the exact same group of three members over read more ..

Guest Oct 19, 2022

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254

1

Algebra

Find all real values of x such that
(x^2 + 2x + 5 - x - 4)(3x^2 - x - 4 + 2x + 8) >= 0

Guest Oct 19, 2022

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183

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Algebra

Find the ordered quintuplet (a,b,c,d,e) that satisfies the system of equations
a + 2b + 3c + 4d + 5e = 41
2a + 3b + 4c + 5d + e = 57
3a + 4b + 5c + d + 2e = 34 read more ..

Guest Oct 19, 2022

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265

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+180

When ax-x+3x+b is divided by x – 2, the remainder is 59. When it is divided by x + 1, the remainder is –1. Find the values

When ax³-x²+3x+b is divided by x – 2, the remainder is 59. When it is divided by x + 1, the remainder is –1. Find the values of a and b.

DumbDude05 Oct 19, 2022

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