All Questions ⁺⁰235546 Questions

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astronomy

What is the temperature for an almost completely absorbing dark planet at 1 AU and with a reflectivity of 6.0 %?

Guest Feb 13, 2022

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Sum

What is the sum of all the odd integers between 300 and 400?

Guest Feb 13, 2022

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179

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Algebra question

Tom's mathematics test had 60 questions: 10 arithmetic questions, 30 algebra questions and 20 geometry questions. Although he correctly answered 70% of the arithmetic questions, 40% of the algebra questions and 50% of the geometry questions, he did not read more ..

Guest Feb 13, 2022

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arithmetic sequence

The fifth term of an arithmetic sequence is 9 and the 32nd term is . What is the 23rd term? HELP PLEASE!!!

Guest Feb 13, 2022

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269

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+33

Fractions

Mrs. Clark made an American flag in her sewing class. The flag had 13 stripes that were each 2 3/5 inches wide. The long stripes were 50 inches long (the same as the length of the flag). What was the perimeter of the flag she made?

jurtosun Feb 13, 2022

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172

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System

Let (x_1, y_1), (x_2, y_2), ..., (x_n, y_n) be the real solutions to the system
x + 8y = 7
x^3 + 8y^3 = 343/81
Enter x_1 + y_1 + x_2 + y_2 + ... + x_n + y_n. read more ..

Guest Feb 13, 2022

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188

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Geometry

In triangle ABC, AB = 5, BC = 8, and the length of median AM is . Find AC.

Guest Feb 13, 2022

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Counting

How many continuous paths from A to B, along segments of the figure, do not revisit any of the six labeled points?

Guest Feb 13, 2022

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245

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Probability

Suppose we take two fair dice, but change the numbers on the faces. On one die, we'll replace the 2 with a 5, and on the other, we'll replace the with a . What is the probability that the sum of the numbers are shown when both are rolled is 7? read more ..

Guest Feb 13, 2022

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249

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Help

Zink, May, and Jamie sold some tickets for a school fundraiser. Each ticket $2. Zink sold 1/2 of the tickets. May and Jamie sold the remaining tickets in the ratio 1:3. If Zink sold 36 tickets than May, how much money did the 3 students collect altogether?paying read more ..

Guest Feb 13, 2022

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help geometry

Triangles ABC and PQR are isoscles with AB = BC, RP = PQ, angle B = angle P = 50 degrees. Find angle CXY.

Guest Feb 13, 2022

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178

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Parabolas

The parabola y = x^2 is tangent to a circle at (2,4). The circles passes through the point . Find the center of the circle.

Guest Feb 13, 2022

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181

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Counting problem

A Senate committee has 5 Democrats and 5 Republicans. In how many distinguishable ways can they sit around a circular table if all the Republicans sit next to each other?

Guest Feb 13, 2022

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168

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Counting problem

In how many ways can I arrange 3 different math books and 6 different history books on my bookshelf, if I require there to be a math book on both ends?

Guest Feb 13, 2022

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196

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Number Theory

Find $14^{-1}$ (mod $35$), as a residue modulo 35. (Give an answer between 0 and 34, inclusive.)

Guest Feb 13, 2022

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maths master

what is 79,303 divided by 7 equal

Guest Feb 13, 2022

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311

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algebra

What is the sum of all possible values of k for which x^2 + kx - 10x + 36 is the square of a binomial?

Guest Feb 13, 2022

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291

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Quadratic

There are 5 quadratics below. Four of them have two distinct roots each. The other has only one distinct root; find the value of that root.

4x^2 + 16x + 8
-x^2 + 4x + 5 read more ..

Guest Feb 13, 2022

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311

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Square roots

Simplify the expression 1/sqrt(2) + 3/sqrt(8) + 5/sqrt(32).

Guest Feb 13, 2022

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coordinates

The equation of the line passing through (1,11) and (4,-5) can be expressed in the form

x/a + y/b = 1
read more ..

Guest Feb 13, 2022

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243

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Counting

How many different three-letter sets of initials are possible using the letters A through ?

Guest Feb 13, 2022

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158

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help algebra

For what values of a does the equation (a^2 + 2a)x^2 + (3a + 5)x+2 = 0 yield no real solutions x? Express your answer in interval notation.

Guest Feb 13, 2022

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