All Questions ⁺⁰237740 Questions

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222

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geometry

ABCD is a regular tetrahedron (right triangular pyramid). If M is the midpoint of line CD, then what is angle BCM?

Guest Jun 3, 2022

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302

1

Inequality

Solve 1/3*t - 5 < t - 2. Give your answer as an interval.

Guest Jun 3, 2022

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263

1

Algebra

f(x)=x2+5-85
What two numbers multiply to equal -85 but add to equal 5?

Guest Jun 3, 2022

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273

1

Arithmetic sequence

The sum of the first three terms of an arithmetic sequence is 39, and the sum of the last four terms is 178. If the first term is 10, then what is the average of all the terms?

Guest Jun 3, 2022

0

329

6

+42

help again lolz,

Let a and b be the solutions to 5x^2 - 11 + 4 = 0. Find 1/a + 1/b

●●●●●●

Celestianee Jun 3, 2022

0

292

2

Help!!

The roots of 7x^2 + x - 5 = 0 are a and b Compute (a - 4)(b - 4)

Thank you! (it's not 80/7)

Guest Jun 3, 2022

0

270

1

Algebra

Given two real numbers p and q such that 1/p + 1/q = 1 and pq = 9, what is p + q?

Guest Jun 3, 2022

0

288

1

quadratic

Complete the square x^2 + 12x + 9 - 10x + 1
Enter your answer in the form a(x + u)^2 + v, where a, u, and v are replaced by numbers.

Guest Jun 3, 2022

0

218

0

A={x ∈ R | 0≤x≤4}, B={x∈R | 0≤x≤2 } e C={x ∈R | -2≤x≤2}

Qual a resposta
A={x ∈ R | 0≤x≤4}, B={x∈R | 0≤x≤2 } e C={x ∈R | -2≤x≤2}

Guest Jun 3, 2022

0

351

4

+83

algebra

How many 4-letter words with at least one consonant can be constructed from the letters a,b,c,d,e and ? (Note that b,c,d and are consonants, any word is valid, not just English language words, and letters may be used read more ..

Atlas Jun 3, 2022

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278

1

Algebra

One ordered pair (a,b) satisfies the two equations ab^4 = 384 and ab^5 = 4608. What is the value of a in this ordered pair?

Guest Jun 3, 2022

0

388

1

Help

Julien is buying donuts to bring to his aunt's house for breakfast. He wants to buy one donut for each of the 9 people attending, which includes himself. He buys some blueberry cake donuts, which cost $3 each, and some chocolate glazed donuts, which cost read more ..

Guest Jun 3, 2022

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221

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math problem

Chris labels every lattice point in the coordinate plane with the square of the distance from the point to the origin (a lattice point is a point such that both of its coordinates are integers). How many times does he label a point with the number 65? read more ..

Guest Jun 3, 2022

0

338

3

+237

Profits

Three business partners, Clinton, Murphy and Samson contributed $60,000, $85,000 and $105,000 respectively. They agreed to put 25% of the profit back into the business each year. They also agreed to put aside 40% of the remaining profit to cater for taxes read more ..

Slimesewer Jun 3, 2022

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312

1

Quadratic

The quadratic 3x^2-24x+72+2x^2-6x+18 can be written in the form a(x+b)^2+c, where a, b, and c are constants. What is a+b+c?

Guest Jun 3, 2022

Jun 2, 2022

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227

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Coordinates

What is the area of the region bounded by the three lines with equations 2x+y=8, 2x-5y=10 and x+y=20?

Guest Jun 2, 2022

0

313

1

geometric sequence

Consider the geometric sequence 16/9, 4, 9, ... What is the eighth term of the sequence? Express your answer as a common fraction.

Guest Jun 2, 2022

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368

4

+42

hello! need some more help

Find all solutions to:

Celestianee Jun 2, 2022

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323

1

Function

If f(x)= -1/x , what is f(f(f(f(f(1)))))?

Guest Jun 2, 2022

0

301

1

quadratic

Complete the square 4x^2 + 15x + 2 .
Enter your answer in the form a(x + u)^2 + v, where a, u, and v are replaced by numbers.

Guest Jun 2, 2022

-4

319

1

Quadratic

If we express 2x^2 + 6x + 11 in the form a(x - h)^2 + k, then what is h?

Guest Jun 2, 2022

0

316

1

Proportion

Suppose s and t are directly proportional. If s=14 when t=18, what is s when t=7?

Guest Jun 2, 2022

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281

1

Rates

A train traveling at 100 km an hour takes 3 seconds to enter a tunnel and an additional thirty-five seconds to pass completely through it. Find the length, in kilometers, of the train. Express your answer as a common fraction.

Guest Jun 2, 2022

+3

297

1

+349

Limits

Using L'hopital's Rule, Find lim_x->infinity (x^2 + 2x + 3)/(3x+2)^2

hipie Jun 2, 2022

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