All Questions ⁺⁰237644 Questions

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230

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Sum

Explain how to calculate 75 + 72 + 69 + 66 + ... + 21 + 18 + 15 + ... + (-69) + (-72) + (-75) + (-78) + (-81) without a calculator.

Guest Nov 10, 2022

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218

1

Algebra

Find all solutions to the system
a + b = 14
a^3 + b^3 = 812 + a^2 + b^2

Guest Nov 10, 2022

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182

0

function question

Let F(x) be the real-valued function defined for all real x except for x = 1 and x = 2 and satisfying the functional equation
F(x) + F((2x - 3)/x) = x.
Find the function F(x) satisfying these conditions. Write F(x) as read more ..

Guest Nov 10, 2022

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185

0

Inverse

how do you find the inverse of y=4x^2+12x+9?

Guest Nov 10, 2022

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197

1

1 1/2 is to 6 as x is to 30

1 1/2 is to 6 as x is to 30

Guest Nov 10, 2022

0

220

1

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 Nov 10, 2022

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176

0

Algebra

Find all real numbers x such that
(3^x - 27)^3 + (27x - 3)^3 = (3x + 27x - 30)^3

Guest Nov 10, 2022

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246

2

+41

why is the calculator showing me {} as the answer?

I'm trying to use Ohm's law V = IR but this calculator is giving me weird results. I'm counting on this calculator for my test tomorrow
read more ..

Iconaguard Nov 10, 2022

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242

1

need help

Solve for y if 9y = 3*6*27*4*81*2

Guest Nov 10, 2022

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196

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help precalc

(a) In triangle ABC, angle BCA = pi/4, AB = 5, and AC = 6. Find the sum of all distinct possible values of BC If there are no possible values, enter 0.

(b) In triangle ABC, angle BCA = pi/4, AB = 6, and AC = 4. Find read more ..

Guest Nov 10, 2022

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192

0

The largest drop on a roller coaster has a slope of 64 above the horizontal and covers a distance of 13 m on the ground. How tall is the ro

The largest drop on a roller coaster has a slope of 64° above the horizontal and covers a distance of 13 m on the ground. How tall is the roller coaster at its peak?

Guest Nov 10, 2022

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189

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help counting

A certain club has 50 people, and 10 members are running for president. Each club member either votes for one of the 10 candidates, or can abstain from voting. How many different possible vote totals are there?

Guest Nov 10, 2022

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197

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coordinates

The perpendicular bisector of the line segment connecting the points (-3,8) and (5,4) has an equation of the form y = mx + b. Find m + b.

Guest Nov 10, 2022

Nov 9, 2022

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196

0

im doing cosine 1/2absinC but i need to find C. How do i clickup to sin-1??

How do i get sin-1?

Guest Nov 9, 2022

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180

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number theory

N is a four-digit positive integer. Dividing N by 9 , the remainder is 5. Dividing N by 7, the remainder is 2. Dividing N by 5, the remainder is 4. What is the smallest possible value of N?
<read more ..

Guest Nov 9, 2022

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198

1

Geometry

Let ABC be a triangle, and let its angle bisectors be AD, BE, and CF, which intersect at I. If DI = 3, BD = 4, and BI = 8, then find the area of triangle ABC.

Guest Nov 9, 2022

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224

1

help math

Let u and v be the solutions to 3x^2 + 5x + 7 = 2x^2 - 4x - 11. Find u/v + v/u.

Guest Nov 9, 2022

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246

5

zylinder

Hey
I really need help with a math problem:
We are supposed to "calculate" the ideal dose.
As information we only got that the can has a volume of one liter. read more ..

●●●●●

Guest Nov 9, 2022

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225

1

geometry

Points A and B are on side YZ of rectangle WXYZ such that WA and WB trisect ZWX. If BY = 3 and AZ = 8, then what is the area of rectanlge WXYZ?

Guest Nov 9, 2022

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182

0

Algebra

If x and y are positive integers such that 4x + 2y = 36 and 5y + 2x = 58 - x + 2y, what is the value of the product xy?

Guest Nov 9, 2022

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175

0

Algebra

Let a and b be real numbers such that a + b = 4 and a^4 + b^4 = 16.
(a) Find all possible values of ab
(b) Find all possible values of a + b
(c) Find all possible values of a and b

Guest Nov 9, 2022

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180

0

help counting

In a row of five squares, each square is to be colored either red, yellow, or blue, so that no two consecutive squares have the same color, and at lest three of the squares are red. How many ways are there to color the five squares?

Guest Nov 9, 2022

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