angelxbobaa

4 Questions
3 Answers

0

408

1

+25

question ty

Line $\ell_1$ is horizontal and passes through $(-5,8)$. Line $\ell_2$ is vertical and passes through $(4,-1)$. Find the point of intersection of $\ell_1$ and $\ell_2$.

angelxbobaa Jun 23, 2021

+1

495

2

+25

question pls help ty

For a certain value of $k$, the system
\begin{align*} x + y + 3z &= 10, \\ -4x + 3y + 5z &= 7, \\ kx + z &= 3 \end{align*}
has no solutions. What is this value of $k$?

angelxbobaa Jun 21, 2021

+1

478

4

+25

Another problem :>

In physics, Ohm's law says that current through a wire, $I$, is directly proportional to voltage, $V$, and inversely proportional to resistance, $R$:
\[I=\frac{V}{R}.\]
It's also true that resistance is directly proportional to the length read more ..

angelxbobaa Jun 10, 2021

+1

412

2

+25

painting help?

All members of our painting team paint at the same rate. If 20 members can paint a 6000 square foot wall in 24 minutes, then how long would it take the 20 members to paint a 9000 square foot wall, in minutes?

angelxbobaa Jun 9, 2021

+25

+1

I tried 1200 milliamps, and it counted it wrong.

angelxbobaaJun 14, 2021

+25

0

I have a $TI30XI$ calculator. The button for fractions is labeled "$A$ $b/c$." You put 1 in the calculator and then press the button and put 3 after. The fraction should display a comma-like thing representing the fraction.

angelxbobaaJun 10, 2021

+25

+1

Let John's age be $j$

Let John's sister be $s$

$10s = j$

$j + 8 = 18$

John is currently 10 years old right now. His sister is 1 year old.

angelxbobaaJun 10, 2021