All Questions ⁺⁰237690 Questions

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165

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Counting

Find the number of six-digit numbers, where the sum of the digits is divisible by 8.

Guest Feb 27, 2023

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154

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Counting

A debate team consists of 5 freshmen and 4 sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so at least two of the sophomores are standing next to each other, and at least two of the freshmen are at the ends read more ..

Guest Feb 27, 2023

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159

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Algebra

Find all solultions of the equation |x^2 - 30x - 1| + |x^2 - 30x + 1| = 30.

Guest Feb 27, 2023

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153

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Counting

Can anyone help plz?

A debate team consists of 5 freshmen and 4 sophomores. (Everyone is distinguishable.) In how many ways can they stand in line, so at least two of the sophomores are standing next to each other, and read more ..

Guest Feb 27, 2023

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155

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Inequality

Plz help prove this inequality

(a) Show that if a, b, c, d, e, f are nonnegative real numbers, then (a^2 + b^2)^2 (c^4 + d^4)(e^4 + f^4) >= 32abcdef.
(b) Show that if a, b, c, d, e, f are nonnegative real read more ..

Guest Feb 27, 2023

Feb 26, 2023

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204

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I know im not aloud to be mean to yall but pls help asap pls pls.

In triangle, ABC, points D and F are on LINE AB and E is on AC such that DE parrerl to BC and EF parreell CD. If AF=9 and DF=3, then what is BD?

Guest Feb 26, 2023

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155

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Probability

A box contains 24 tiles. Each tile has certain properties:
Each tile is made of wood or plastic.
Each tile is red, yellow, or blue.
Each tile is a triangle, square, pentagon, or circle.
There is exactly one tile for each combination read more ..

Guest Feb 26, 2023

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158

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Precalc

In triangle PQT, R is on side PT such that QR = QP. Also, QS is an altitude, and QT = 10. The values of tan CBE, tan CBE, tan SQT form an arithmetic progression, and the values of cot SQT, cot RQT, cot SQR form a geometic progression. read more ..

Guest Feb 26, 2023

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177

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Geometry

In triangle ABC the angle bisector of BAC meets BC at D. If angle BAC = 60, angle ABC = 60, and AD = 24, then find the area of triangle ABC.

Guest Feb 26, 2023

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201

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what is the sum of the digits in the expansion 10^38+26/18?

I have this due tommorow.
Will accept any help
(Please show step by step explanation)

Guest Feb 26, 2023

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162

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Coordinates

Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2 + PC^2 = 3PQ^2 + k
If A = , B = , and C = , then find the constant k.

Guest Feb 26, 2023

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162

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Counting

Sam writes down the numbers 1, 2, 3, ..., 99

(a) How many digits did Sam write, in total?
(b) Sam chooses one of the digits written down, at random. What is the probability that Sam chooses a 0? read more ..

Guest Feb 26, 2023

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160

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90/360x2pi(4)

Guest Feb 26, 2023

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145

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Find the coefficient of y^4 in the expansion of (2y - 5)^6.

Find the coefficient of y^4 in the expansion of (2y - 5)^6.

Guest Feb 26, 2023

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163

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Counting

A baking club wants to form an executive committee. There are people in the baking club, including mark. In how many ways can the baking club form an executive committee with people?

Guest Feb 26, 2023

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