$49.50 the jacket costs this because her total amount was $66. to find total money I said 3/4x - 1/4x = $33 so 1/2x =$33 and x= $66. then multiply the total by 3/4 to get $49.50
-21/5 is the closest!!!
Hope this helps.
If you want me to explain why, just ask! :)
To solve this problem you must apply the proccedure shown below:
By definition, an equilateral triangle has equal sides and all its internal angles are
. If you divide it into two right triangles, you can apply the Pythagorean Theorem to calculate the height of the triangular base of the pyramid, as following:
![h=\sqrt{18in^{2}-9in^{2}}\\ h=15.58in](https://tex.z-dn.net/?f=%20h%3D%5Csqrt%7B18in%5E%7B2%7D-9in%5E%7B2%7D%7D%5C%5C%20h%3D15.58in%20)
Therefore, as you can see, the answer is:![15.58in](https://tex.z-dn.net/?f=%2015.58in%20)
He is correct.
The further away ( to the left) from 0 a negative number is the smaller it is.
First off, sin 2 theta = 2 sin theta cos theta. Also, the answer to your question is no. There are multiple double angle formulas, and it is important that you remember them so that you can answer questions correctly.