Williamjwu8

I don't think you need to know where the plane started from, given that you know that it's an 8 hour flight.

Thank you a lot! I solved it actually a little while ago, and that answer is right!

We see that that some of the points on line l are (0, 5) and (3, 0) and some of the points that are on line m are (0, 2) and (7, 0).

For line l, for every increase of 3 in the x direction, there is a decrease of 5 in the y direction. Since we want y = 15, we will increase y two times to get to (0, 15). This will cause x to decrease by 3 two times as well, so we'll get (-6, 15) for line l. For line m, we want to increase 13 units upwards, and every 2 units up causes 7 units left. Therefore, (13)(7/2) = 91/2. 

Therefore, the coordinates of the point on line m is (-91/2, 15). The difference in the x-coordinates are -6-(-91/2) = 79/2

Hint(s): (I gave you the solution for the other problem so you should be able to use that to solve it since angle of elevation and angle of depressions are very similar) He's 40 meters off the ground, so find the distance between the bottom of his office building and the base of the tower using tangent (because we know the opposite and we want to find the adjacent. Once you know the distance between the bottom of the office building and the base of the tower (call it x), use tangent on the angle of elevation to find how much taller the tower is compared to where he is standing.

Below is a diagram.

You could've made this comment on one of your other posts. You didn't need to make another question just to say this.

I'll help you with this question :)

(however you should answer the other one you just posted)

We know the chopper is 630 meters above the highway, and the angle of depression is 27 degrees. We want to find how far along the highway the accident is. 

Below is the diagram, where x is the length of the highway

We see that $\tan(27^\circ) = \frac{630}{x}$

Therefore, $x=\frac{630}{\tan(27^\circ)}$.

Plugging this into a calculator gives us $\approx1236.44$

Nope, the answer isn't 20 or 28 (what I got)

I realized after it wasn't right

This is because the friends are distinguishable

Uh no, you aren't allowed to cheat. This is for help on questions on worksheets and stuff. We aren't going to help you cheat.

I can already think of 8, and I know there's much more

A straight angle means the angle is $180^\circ$

Therefore, we can set up the equations to add up to $180^\circ$

$8x-41^\circ+9x+17^\circ=180^\circ$ 

Combining like terms, we get $17x-24^\circ=180^\circ$. We can add $24^\circ$ to each side to get $17x=204^\circ$. Therefore, $x=12^\circ$

Plugging this back into the $m\angle{CBD}$ equation, we get $9x+17^\circ=9(12^\circ)+17^\circ=\boxed{125^\circ}$

$104\% \cdot x = 598$, where $x$ will be our answer. We can express $104\%$ as a fraction out of $100$. This is equal to $\frac{104}{100} = \frac{26}{25}$. Therefore, $\frac{26}{25} \cdot x = 598$. We multiply each side by $25$ to get rid of the fraction on the left hand side. Therefore, $26 \cdot x = 598 \cdot 25$. Now, we will divide each side by $26$, so we can isolate $x$. 

$x = \frac{598 \cdot 25}{26}$

Now it's simple arithmetic. This yields the answer of $\boxed{575}$

They interpreted your PEMDAS in a different way, just like in the way:

1 + 6(7 + 3). The calculator and you might have different answers: 70, and 61.