clairepow

65 Questions
5 Answers

+1

440

1

+193

Domain and Range

What real values of $x$ are not in the domain of
$f(x)=\frac{1}{|x^2+3x-4|+|x^2+9x+20|}$?

clairepow 15 feb 2021

0

405

0

+193

Advanced System of Equations

deleted - attempt dome of your own homework Clair.

clairepow 15 feb 2021

0

561

1

+193

Advanced Systems of Equations

The letters of the alphabet are each assigned a random integer value, and $H=10$. The value of a word comes from the sum of its letters' values. If $MATH$ is 35 points, $TEAM$ is 42 points and $MEET$ is 38 points, lee mas ..

clairepow 15 feb 2021

0

448

1

+193

Floors and Ceilings

If $y>0$, find the range of all possible values of $y$ such that $\lceil{y}\rceil\cdot\lfloor{y}\rfloor=42$. Express your answer using interval notation.

clairepow 15 feb 2021

0

484

2

+193

Domain and Range

What is the smallest integer value of $c$ such that the function $f(x)=\frac{2x^2+x+5}{x^2+4x+c}$ has a domain of all real numbers?

clairepow 15 feb 2021

+1

436

1

+193

Piecewise-Defined Functions

Let
\[f(x) =
\begin{cases}
3x^2 + 2&\text{if } x\le 3, \\
ax - 1 &\text{if } x>3.
\end{cases} <#> \]
Find $a$ if the graph of $y=f(x)$ is continuous (which means the graph can be drawn without lifting lee mas ..

clairepow 15 feb 2021

+1

426

1

+193

Floors and Ceilings

Evaluate $\left\lfloor \left\lceil \left(\frac{13}{7}\right)^2\right\rceil+\frac{17}{4}\right\rfloor$.

clairepow 14 feb 2021

+1

423

1

+193

Interest Rates

When Lauren was born on January 1, 1990, her grandparents put $\$1000$ in a savings account in her name. The account earned $7.5\%$ annual interest compounded quarterly every three months. To the nearest dollar, how much money was in lee mas ..

clairepow 14 feb 2021

0

549

1

+193

Interest Rates

An engineer invested $\$10,\!000$ in a six-month savings certificate that paid a simple annual interest rate of $12\%$. After six months, she invested the total value of her investment in another six-month certificate. After six more months, lee mas ..

clairepow 14 feb 2021

0

416

1

+193

Floors and Ceilings

Evaluate $\left\lceil {-\!\sqrt{23}}\right\rceil$.

clairepow 14 feb 2021

0

403

1

+193

Floors and Ceilings

Evaluate $\left\lceil\sqrt{2}\,\right\rceil+\left\lceil\sqrt{22}\,\right\rceil+\left\lceil\sqrt{222}\,\right\rceil$

clairepow 14 feb 2021

+193

-1

A + B + C = -3

clairepow17 feb 2021

+193

-2

I'm actually helping someone else do their homework. I don't want to give them the wrong answers.

clairepow14 feb 2021

+193

-1

No, it's the ceiling symbol.

clairepow14 feb 2021

+193

0

Thank you! I ended up getting 22.

clairepow14 feb 2021

+193

-1

Thank you so much for your help!

clairepow5 feb 2021