Answer is =4b-7 or 4(b)-7
The base of given triangle is 8 cm.
Further explanation:
The area of triangle is calculated by using two methods
- Hero's formula
- Base and Height
Hero's formula requires all three sides of triangle while we can use only base and height in second formula.
Given
![A = 20\ cm^2\\h = 5\ cm](https://tex.z-dn.net/?f=A%20%3D%2020%5C%20cm%5E2%5C%5Ch%20%3D%205%5C%20cm)
As the area of triangle and height are given, then
![A = 0.5*b*h\\20=0.5*b*5\\20=2.5b\\b=\frac{20}{2.5}\\b=8\ cm](https://tex.z-dn.net/?f=A%20%3D%200.5%2Ab%2Ah%5C%5C20%3D0.5%2Ab%2A5%5C%5C20%3D2.5b%5C%5Cb%3D%5Cfrac%7B20%7D%7B2.5%7D%5C%5Cb%3D8%5C%20cm)
The base of given triangle is 8 cm.
Keywords: Area of triangle, base, height
Learn more about area of triangle at:
#learnwithBrainly
Answer:
204
Step-by-step explanation:
Following the order of operations, what is within the parenthesis is solved first.
<em>65 x 3 = 195</em>
Then, you add 9 to 195.
<em>195 + 9 = 204</em>
<em>204</em> is the final answer.
Have a nice day! ^-^
Answer:
I doubt it is not going to be a great day of school
I believe it is (8 ÷ 4) - 3[3(2) + 1]