First, you are going to want to get the terms to the same power of 10 in scientific notation. Realize that
. Essentially, we have converted the
to a term with
. Now, we can subtract the values in each term that are not 10 as shown below:
![93 \cdot 10^6 - 3.14 \cdot 10^6](https://tex.z-dn.net/?f=93%20%5Ccdot%2010%5E6%20-%203.14%20%5Ccdot%2010%5E6)
![(93 - 3.14) \cdot 10^6](https://tex.z-dn.net/?f=%2893%20-%203.14%29%20%5Ccdot%2010%5E6)
![89.86 \cdot 10^6](https://tex.z-dn.net/?f=89.86%20%5Ccdot%2010%5E6)
Remember that we have to turn it back to scientific notation once we are done!
![89.86 \cdot 10^6 = 8.986 \cdot 10^7](https://tex.z-dn.net/?f=89.86%20%5Ccdot%2010%5E6%20%3D%208.986%20%5Ccdot%2010%5E7)
Our answer is the second choice,
. (This is the closest answer to
.)
The answer is D, 4.2. not what the person said
A parallelogram is 2 equal straight lines that are together
Answer:
The measure of angle LKJ is 49°
Step-by-step explanation:
<u><em>The correct question is</em></u>
The equation tan−1 = {8.9/7.7} x can be used to find the measure of angle LKJ. What is the measure of angle LKJ?
Round to the nearest whole degree.
see the attached figure to better understand the problem
Let
x -----> the measure of angle LKJ
we know that
![tan(x)=\frac{8.9}{7.7}](https://tex.z-dn.net/?f=tan%28x%29%3D%5Cfrac%7B8.9%7D%7B7.7%7D)
so
![x=tan^{-1}(\frac{8.9}{7.7})](https://tex.z-dn.net/?f=x%3Dtan%5E%7B-1%7D%28%5Cfrac%7B8.9%7D%7B7.7%7D%29)
using a calculator
![x=49.13\°](https://tex.z-dn.net/?f=x%3D49.13%5C%C2%B0)
Round to the nearest whole degree
![x=49\°](https://tex.z-dn.net/?f=x%3D49%5C%C2%B0)
therefore
The measure of angle LKJ is 49°
5m( 3n + 7y ) - 2k( 3n + 7y ) = ( 3n + 7y )( 5m - 2k ).