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242

graphs

The graph y=ax^2+bx+c is given below, where a, b, and c are integers. Find a.
Note that the graph does pass through each lattice point that it appears to.
read more ..

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Guest Oct 16, 2022

278

+275

help pls

Four standard fair -sided dice are rolled. What is the probability that the sum of the numbers rolled is even?

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Jasonkiln Oct 16, 2022

201

help plz

Let's take a look at (x + y)^2 (x - y)^2 and (x^2 + y^2)(x^2 - y^2). While Beeker believes that these two expressions are equal for all real numbers x and y Clod believes they are not! Let's get to the bottom of this!
a) Evaluate (x + y)^2 (x - read more ..

Guest Oct 16, 2022

192

Algebra

Consider the two expressions (6x^3 + 9x^2 + 4x + 7 - 17x^2 - 8x + 8)/(2x + 3 - 7x - 11) and 4x^2 - 7 + 1/(2x + 3 - 7x - 11)
a) Show that the two expressions represent equal numbers when x = 10
b) Explain why these two expressions do read more ..

Guest Oct 16, 2022

234

need help

Find the ordered pair (s,t) that satisfies the system
s/2+5t=3-t and 3t-6s=9+7s

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Guest Oct 16, 2022

273

Let It is given that and Find

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Guest Oct 16, 2022

247

Suppose that the roots of a cubic polynomial are the side lengths of a triangle. If , then find the area of the triangle.

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Guest Oct 16, 2022

210

asef

n concave equilateral pentagon . What is the degree measure of ?

Guest Oct 16, 2022

235

probability

Dakota randomly selected three different integers 1 through 8. What is the probability that the three numbers selected could be the sides of a triangle? Express your answer as a common fraction.

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Guest Oct 16, 2022

225

geometry

Two perpendicular chords AB and CD intersect at P. If PA = 4, PB = 10, and CD = 13, calculate the length of P to the center of the circle

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Guest Oct 16, 2022

234

Algebra

Find the smallest integer x where the expression sqrt (x+8)/(x^2+x+16) is defined.

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Guest Oct 16, 2022

238

Help

The ratio of the number of 50-cent coins to the number of $1 coins in a piggybank was 2:1. When 12 more 50-cent coins were added into the piggybank, the ratio of the number of 50-cents coins to the $1 coins became 7:2. What was the total read more ..

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Guest Oct 16, 2022

239

Help please

A sum of money was shared equally among 7 boys and 10 girls. After each boy gave 2/5 of his money to the girls, 40% of the total amount of money the girls received from the boys was $1960.
(a) What was amount of money each boy received?
(b) read more ..

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Guest Oct 16, 2022

241

Help

a truck can be rented from company A for $80 a day plus $0.40 per mile. Company B charges $50 a day plus $0.70 per mile to rent the same truck. find the number of miles in a day at which the rental costs for company A and company B are the same read more ..

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Guest Oct 16, 2022

210

I would love some assistance!

1) Compute the sum:
3+8+13+...293+298+303

2) In an arithmetic sequence, the sum of the second and eighth terms is 5, and the product of the fourth and fifth terms is also 5 .
What is the sum of the first 20 read more ..

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Guest Oct 16, 2022

274

+275

Probablity

A class of 10 students, including Jenny, Kenny, and Lenny, are split into two groups of 5 students at random to work on a group project. What is the probability that both Jenny and Kenny are in a different group than Lenny?

Really read more ..

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Jasonkiln Oct 16, 2022

234

counting

In the array below, in how many different ways can we start with the letter A and move from letter to letter (horizontally, vertically, or diagonally), to spell the word "ARCH"?

A
RRR read more ..

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Guest Oct 16, 2022

269

Algebra

What is the sum of all possible values of x such that 2x(x-10)=-50+x^2-30x?

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Guest Oct 16, 2022

190

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 16, 2022

234

help

For all real numbers x except x=0 and x=1 the function f is defined by f(x/x-1)=1/x. Suppose 0<=t<=pi/2. Given that f(Sec^2t)=(g(t))^2 for some trigonometric function g, find g.
Enter your answer as one of the six options: sin, read more ..

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Guest Oct 16, 2022

242

Algebra

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

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Guest Oct 16, 2022

228

Algebra

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 ..

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Guest Oct 16, 2022

226

quadratic

Let u and v be the solutions to 3x^2 + 5x + 7 = -2x^2 - 7x + 1. Find u/v +v/u.

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Guest Oct 16, 2022

227

quadratic

One of the five quadratics below has a repeated root. (The other four have distinct roots.) What is the repeated root?

-x^2 + 18x + 81
3x^2 - 6x + 9 read more ..

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Guest Oct 16, 2022

All Questions ⁺⁰237827 Questions

graphs

help pls

help plz

Algebra

need help

Let It is given that and Find

Suppose that the roots of a cubic polynomial are the side lengths of a triangle. If , then find the area of the triangle.

asef

probability

geometry

Algebra

Help

Help please

Help

I would love some assistance!

Probablity

counting

Algebra

Algebra

help

Algebra

Algebra

quadratic

quadratic

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