All Questions

198

Parabolas

The parabolas defined by the equations y = x^2 + 4x + 6 and y = 1/2*x^2 + x + 4 intersect at (a,b) and (c,d) where c >= a. What is c - a?

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Guest Jul 6, 2022

226

Number Theory

Find the remainder when the sum 2^{2} + 2^{6} + 2^{10} + 2^{14} + \cdots + 2^{110} + 2^{114} + 2^{118} is divided by 10.

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Guest Jul 6, 2022

117

Number Theory

Suppose that p and q are prime numbers such that p divides q+1 and q divides p+3. Determine p+q.

Guest Jul 6, 2022

161

Number Theory

Find the largest prime factor of 3^{15} + 3^{11} + 3^7 + 3^3.

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Guest Jul 6, 2022

169

J = 12/13 W J = 3(W - 63) 12/13 W = 3W - 189 ... 189 = 27/13 W solve for W, then substitute back to find J

J = 12/13 W
J = 3(W - 63)
12/13 W = 3W - 189 ... 189 = 27/13 W
solve for W, then substitute back to find J

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Guest Jul 6, 2022

232

Isosceles triangle

The lengths of the sides of isosceles triangle triangle ABC$ are 3x+62, 7x+60, and 5x+50 feet. What is the least possible number of feet in the perimeter of triangle ABC?

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Guest Jul 6, 2022

202

Domain

The domain of the function h(x) = sqrt(25-x^2) + sqrt(-(x-12)) is an interval of what width?

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Guest Jul 6, 2022

119

Counting

How many ways are there to divide a red bracelet, a yellow bracelet, a green bracelet, and a black bracelet among 4 people if someone must receive exactly two bracelets?

Guest Jul 6, 2022

200

Algebra

If a, b, and c are positive integers satisfying ab + c = bc + a = ac + b = 2, what is the value of a + b + c?

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Guest Jul 6, 2022

190

Probability

Paul and Jesse each choose a number at random from the first seven primes. What is the probability that the sum of the numbers they choose is even?

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Guest Jul 6, 2022

140

sketching rational function

I'm given the function (x^3 - 4x - 8) / (x+2) and need to locate asymptotes, stationary points, and inflection points. I have determined that there is a vertical asymptote at x=-2 and a curvilinear asymptote at x^2 - 2x, but am stuck on how to move forward. read more ..

Guest Jul 6, 2022

207

Trapezoid

As shown in the diagram, PQ is the median of trapezoid ABCD, where AB=25 inches and CD=38 inches. Find XY in inches.

read more ..

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Guest Jul 6, 2022

+10

295

+1162

Pythagorean Theorem.

An isosceles right triangle is removed from each corner of a square piece of paper, as shown, to create a rectangle. If units, what is the combined area of the four removed triangles, in square units?

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nerdiest Jul 6, 2022

199

Logs

Find the value of log_2 (3) * log_(3) 4.

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Guest Jul 6, 2022

209

geometric sequence

What is the sum of the geometric sequence 2, 10, 50, ... if there are 7 terms?

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Guest Jul 6, 2022

196

System

If x, y abd z are positive with xy=24, xz=48 and yz=12, what is the value of x+y+z?

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Guest Jul 6, 2022

207

Algebra

Find the constant term in the expansion of (2z - 1/sqrt(z) + z^2)^9

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Guest Jul 6, 2022

-1

194

what is the answer to

5/6+4/6

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Guest Jul 6, 2022

216

Quadratic

Suppose that 2x^(2) - 5x + k = x^2 - 4x is a quadratic equation with one solution for x. Express k as a common fraction.

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Guest Jul 6, 2022

191

Algebra

A fuel tanker weighs 2500 tons when 25% full and 3100 tons when 75% full. What is its weight in tons when empty?

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Guest Jul 6, 2022

128

Inequalities

Select all the points that satisfy y < 2x + 3. Each grid line represents one unit.

Guest Jul 6, 2022

165

system

Assuming x, y, and z are positive real numbers satisfying:
xy - z = 15
xz - y = 15
yz - x = 15 read more ..

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Guest Jul 6, 2022

143

triangles

Two angles of a triangle measure 30 and 45 degrees. If the side of the triangle opposite the 30-degree angle measures 6 units, what is the side opposite the 105 degree angle? Express your answer as a decimal to the nearest tenth.

Guest Jul 6, 2022

Jul 5, 2022

227

+101

Could anyone help with this?

A piece of iron is heated to 155 degrees celsius and placed into a calorimeter that contains 50.0 mL of water at 18.7 degrees celsius. The temperature of the water rises to 26.4 degrees celsius. How much heat was released by the iron?
read more ..

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vxnessa Jul 5, 2022

131

Probability

A bag contains 6 red marbles, 5 blue marbles and 8 green marbles. If three marbles are drawn out of the bag, what is the probability, to the nearest 10th of a percent, that all three marbles drawn will be green?

Guest Jul 5, 2022

All Questions ⁺⁰230833 Questions

Parabolas

Number Theory

Number Theory

Number Theory

J = 12/13 W J = 3(W - 63) 12/13 W = 3W - 189 ... 189 = 27/13 W solve for W, then substitute back to find J

Isosceles triangle

Domain

Counting

Algebra

Probability

sketching rational function

Trapezoid

Pythagorean Theorem.

Logs

geometric sequence

System

Algebra

what is the answer to

Quadratic

Algebra

Inequalities

system

triangles

Could anyone help with this?

Probability

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