All Questions

229

Number Theory

What is the smallest five-digit plaindrome that is divisble by ?

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Guest Apr 30, 2022

287

trig question

In triangle DEF, angle D = 30º, angle F = 60º, and EF = 6. Find [DEF].

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Guest Apr 30, 2022

301

Math help please

The baker in my town has cooked chocolate, nut and butter cookies. 1/5 of the total number of cookies were chocolate, 1/4 of the remaining cookies were nuts and the rest were butter. How many shortbread cookies do I cook for each chocolate chip cookie? read more ..

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Guest Apr 30, 2022

262

Exponents

The function f(x) = ax^r satisfies f(2) = 1 and f(32) = 16. Find r.

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Guest Apr 30, 2022

184

Find the set of values a for which the range of the function

Find the set of values a for which the range of the function
f(x) = (x^2 + a)/(x^2 - x + 1)
is the set of all real numbers.

Guest Apr 30, 2022

284

The solutions of the quadratic equation are obtained by adding to each of the solutions of . Find the value of .

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Guest Apr 30, 2022

289

Decimals

We know that 1/13 =0.0769230769230769230769230769230769... When 1/130 is written as a repeating decimal, what is its 130th digit to the right of the decimal point?

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Guest Apr 30, 2022

303

Vieta formula question

The sum , the product and the difference of squares of two positive numbers and is the same non-zero number. What is ?

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Guest Apr 30, 2022

301

Sequence

Define the sequence of positive integers a_n recursively by a_1=3 and a_n=3(a_n- 1) for all n> =2. Determine the last two digits of a_{2007}.

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Guest Apr 30, 2022

231

Question

How many 4-digit numbers have the second digit even and the fourth digit at least twice the second digit?

Please expalin/give me a hint on how to do it! Thanks!

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Guest Apr 30, 2022

288

Quadratic

r and s are the roots of 3x^2 + 4x - 12 = 0. What is r^3 + s^3?

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Guest Apr 30, 2022

282

Helppp

In how many ways can you place 4 indistinguishable rooks on a chess board so that no two rooks attack each other and there is one rook in each quadrant shown below? (A rook attacks every square in its row and column.)
8x8 Board

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Guest Apr 30, 2022

274

geometry problem

Point D is the midpoint of median AM of triangle ABC. Point E is the midpoint of AB, and point T is the intersection of BD and ME. Find the area of triangle DMT is [ABC] = .

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Guest Apr 30, 2022

254

Help

1.
In how many ways can you color one cell blue and one cell red in the grid below so that the colored cells are not neighbors? Two cells are neighbors if they touch at all, even diagonally.

5x5 Square
read more ..

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Guest Apr 30, 2022

286

Angles

In triangle ABC, the angles A, B, C form an arithmetic sequence. if A = 17 degrees, then what is angle C, in degrees?

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Guest Apr 30, 2022

271

3d geometry

Rectangle ABCD is the base of pyramid PABCD. If AB = 8, BC = 4, and the height of the pyramid is 6, then what is the volume of PABCD?

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Guest Apr 30, 2022

281

Fractions

Suppose $\frac ab = \frac35$,$\frac bc=\frac{15}{8}$, and $\frac cd = 8$. What is the value of $\frac ad$? Express your answer in simplest form.

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Guest Apr 30, 2022

268

help coordinates

The equation of the line passing through (1,11) and (-4,5) can be expressed in the form x/a + y/b = 1. Find a.

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Guest Apr 30, 2022

284

Algebra

Find the sum of all x that satisfy the equation -9x/(x^2 - 1) = 2x/(x + 1) - 8(x - 1).

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Guest Apr 30, 2022

366

Pls help ME thank you so much

How many positive common fractions with a value less than 1/2 have 37 as their denominator?

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Guest Apr 30, 2022

264

geometry question

The ratio of the areas of two squares is . After rationalizing the denominator, the ratio of their side lengths can be expressed in the simplified form $\frac{a\sqrt{b}}{c}$ where $a$, $b$, and $c$ are integers. What is the value of the sum read more ..

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Guest Apr 30, 2022

282

Algebra problem

The sum of three positive integers is 42. The smallest integer is five less than the middle integer. The middle integer is two less than the greatest integer. Define a variable, write an equation and solve to find the three integers.

WhyamIdoingthis ●

Guest Apr 30, 2022

247

Math problem

I pick two whole numbers x and y between 1 and 10 inclusive (not necessarily distinct). My friend picks two numbers x - 4 and 2y + 1. If the product of my friend's numbers is one greater than the product of my numbers, then what is the product of my numbers? read more ..

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Guest Apr 30, 2022

287

Algebra

The arithmetic mean between two numbers is 75 and their geometric mean is 21. Find the numbers.

WhyamIdoingthis ●●

Guest Apr 30, 2022

287

proportion

If p is inversely proportional to the square of q, and p is 19 when q is 8, determine p when q is equal to 3

WhyamIdoingthis ●

Guest Apr 30, 2022

All Questions ⁺⁰236369 Questions

Number Theory

trig question

Math help please

Exponents

Find the set of values a for which the range of the function

The solutions of the quadratic equation are obtained by adding to each of the solutions of . Find the value of .

Decimals

Vieta formula question

Sequence

Question

Quadratic

Helppp

geometry problem

Help

Angles

3d geometry

Fractions

help coordinates

Algebra

Pls help ME thank you so much

geometry question

Algebra problem

Math problem

Algebra

proportion

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