All Questions ⁺⁰238459 Questions

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231

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algebra

Let a and b be real numbers such that a - b = 4 and a^3 + b^3 = 52 + a^2 - b^2.
(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 Sep 13, 2022

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246

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quadratic

Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 14x + 1. Compute a^3 + b^3.

Guest Sep 13, 2022

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250

0

quadratic

Let a and b be the roots of the quadratic x^2 - 5x + 3 = 2x^2 - 11x + 14. Find the quadratic whose roots are a^2 and b^2.

Guest Sep 13, 2022

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326

0

Triangle ABC has vertices at A (3, 5), B (5, 7) and C (7, 5). Lisa believes that the perimeter of ΔABC&n

Triangle ABC has vertices at A (3, 5), B (5, 7) and C (7, 5).
Lisa believes that the perimeter of ΔABC is 12 units.

Why is Lisa incorrect?
A.Because AB = read more ..

Guest Sep 13, 2022

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249

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help logarithims

logx 8=0.5?
A.4
B.16
C.64 read more ..

Guest Sep 13, 2022

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337

1

The pay rate and hours worked are given below. Use this information to determine the following. Make sure to include decimals and appropriat

The pay rate and hours worked are given below. Use this information to determine the following. Make sure to include decimals and appropriate zeros. the gross pay federal tax (assuming 20% of gross earnings) state tax (assuming 6% of gross earnings) social read more ..

Guest Sep 13, 2022

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306

1

- 5^2 - 5

Guest Sep 13, 2022

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288

1

algebra

Guest Sep 13, 2022

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351

2

Please help with working. Thanks

There were twice as many chocolate tarts as apple tarts in a shop at first. 3/4 of the chocolate tarts and 2/3 of the apple tarts were sold in the morning.
(a) What fraction of the total number of tarts were left unsold in the morning?
(b) read more ..

Guest Sep 13, 2022

Sep 12, 2022

+1

389

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+590

Given $f(x) = \frac{2x-3}{x+1},$ find the value of $a$ such that $f(3a-2) = 1.$

Given $f(x) = \frac{2x-3}{x+1},$ find the value of $a$ such that $f(3a-2) = 1.$

weredumbmaster22 Sep 12, 2022

+1

348

1

+590

ind $\frac{x}{y}$ if \begin{align} 2\sqrt{x} + \frac1y &= 13 \\ 8\sqrt{x} - \frac 3y &= 3. \end{align}

ind $\frac{x}{y}$ if \begin{align*} 2\sqrt{x} + \frac1y &= 13 \\ 8\sqrt{x} - \frac 3y &= 3. \end{align*}

weredumbmaster22 Sep 12, 2022

+1

310

1

+590

Find $x + \dfrac 1x$ if\[3x+\frac{2}{x}-4=2(x+9)-\left(7-\frac{1}{x}\right).\]

Find $x + \dfrac 1x$ if\[3x+\frac{2}{x}-4=2(x+9)-\left(7-\frac{1}{x}\right).\]

weredumbmaster22 Sep 12, 2022

+1

344

1

+590

Define $g(x)$ as follows: \[ g(x)= \begin{cases} -1, & \text{if } x < 0,\\ 0, & \text{if } x = 0, \\ 1,

Define $g(x)$ as follows: \[ g(x)= \begin{cases} -1, & \text{if } x < 0,\\ 0, & \text{if } x = 0, \\ 1, & \text{if } x > 0. \\ \end{cases} \]Let $f(x) = g(x+1) - g(x-1).$ Compute $f\left(\frac12\right) + f\left(-\frac12\right).$ read more ..

weredumbmaster22 Sep 12, 2022

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287

1

help pls

Define g(x) as follows:
Let f(x) = g(x+1) - g(x-1). Compute f(1/2) + f(-1/2).

Guest Sep 12, 2022

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275

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functions

If f(x) = 3x - 7, then what is f^-1(f^-1(-1))?

Guest Sep 12, 2022

-2

304

2

+30

Help!

I'm stuck on this problem
Sam decides to start a rumor. Sam tells the rumor to her three friends. Each of Sam's three friends then tells the rumor to three friends who have not heard the rumor. This continues for five total cycles. Sam telling her read more ..

NJColonial6 Sep 12, 2022

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341

3

Twice the sum of consecutive numbers n and is 510.

Twice the sum of consecutive numbers n and is 510.

how to solve?

Guest Sep 12, 2022

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296

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math

I am a number between 2 000 000 and 3 000 000 all my digit are even all the digit in my thousand period are the same all the digit in my units period are the same the sum of my digit is 38 what number am i?

Guest Sep 12, 2022

+1

262

1

+660

Um pls halp

I am going to buy exotic fruits. Dragonfruit costs x-4 dollars. Starfruit is five dollars less expensive than rambutan. Rambutan costs 2x dollars more than dragonfruit. How much does it cost to buy one rambutan, two starfruits, and three dragonfruits? Your read more ..

Keihaku Sep 12, 2022

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347

2

+660

My brain is DED pls halp me

Find the integer that lies between and read more ..

Keihaku Sep 12, 2022

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268

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Whe do you use inverse operations? What does it do to an equation?

I was solving a few problems for X (Algerbraic expressions), and pretty flunked them all. For the first equation, i mathwayd the answer and realized I didnt use inverse operations. For the next equation, I made sure use inverse operations. Ended up read more ..

Guest Sep 12, 2022

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244

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help

f(x)=x^2-4/x^2-9 what describes the end behavior of the function.
A. The function approaches 0 as x approaches -infinity sign and infinity sign.
B. The function approaches 9/4 as x approaches -infinity sign and infinity sign.
C. read more ..

Guest Sep 12, 2022

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429

2

$N$ is a four-digit positive integer. Dividing $N$ by $9$, the remainder is $5$. Dividing $N$ by $7$, the remainder is $3$. Dividing $N$ by

$N$ is a four-digit positive integer. Dividing $N$ by $9$, the remainder is $5$. Dividing $N$ by $7$, the remainder is $3$. Dividing $N$ by $5$, the remainder is $1$. What is the smallest possible value of $N$?

Guest Sep 12, 2022

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