Formula for finding the area of a triangle:
![A = \frac{1}{2}bh](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7B1%7D%7B2%7Dbh)
Where b is the base and h is the height.
Substitute the variables for the values.
![A = \frac{1}{2}(30)(18)](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7B1%7D%7B2%7D%2830%29%2818%29)
![A = \frac{1}{2}540](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%7B1%7D%7B2%7D540)
A = 270
So, the area is 270 square centimeters.
Hi! :) 19.7 - 6.8 is 12.9. If you need anymore help, ask me!
Answer:
$37.12
Step-by-step explanation:
When $816.64 is divided 22 ways, each portion is (not surprisingly) ...
... $816.64/22 = $37.12
Supposing that 20 out of 100 people choose black or gray, the percentage is of 20%.
<h3>What is a percentage?</h3>
The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:
![P = \frac{a}{b} \times 100\%](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7Ba%7D%7Bb%7D%20%5Ctimes%20100%5C%25)
Hence, if 20 out of 100 people choose black or gray, the percentage is given by:
![P = \frac{20}{100} \times 100\% = 20\%](https://tex.z-dn.net/?f=P%20%3D%20%5Cfrac%7B20%7D%7B100%7D%20%5Ctimes%20100%5C%25%20%3D%2020%5C%25)
More can be learned about percentages at brainly.com/question/10491646
#SPJ1
Answer: See below
Step-by-step explanation:
x, amount of cashews
39-x, amount of Brazil nuts
![\frac{7.3x+4.3\left(39-x\right)}{39}\:=\:5.53](https://tex.z-dn.net/?f=%5Cfrac%7B7.3x%2B4.3%5Cleft%2839-x%5Cright%29%7D%7B39%7D%5C%3A%3D%5C%3A5.53)
![\frac{39\left(7.3x+4.3\left(39-x\right)\right)}{39}=5.53\cdot \:39](https://tex.z-dn.net/?f=%5Cfrac%7B39%5Cleft%287.3x%2B4.3%5Cleft%2839-x%5Cright%29%5Cright%29%7D%7B39%7D%3D5.53%5Ccdot%20%5C%3A39)
![3x+167.7=215.67](https://tex.z-dn.net/?f=3x%2B167.7%3D215.67)
![3x=47.97](https://tex.z-dn.net/?f=3x%3D47.97)
![x=15.99](https://tex.z-dn.net/?f=x%3D15.99)
Amount of cashews = 15.99 - 16 lbs
Amount of Brazil nuts = 39 - x = 23.01 lbs