The base of the triangle decreases by 30% and the height increases by 20%.
1 answer:
Answer:
Area decreases by 16%
Step-by-step explanation:
Use formula for the area of the triangle

<u>Initial triangle:</u>
The base is 18 cm
The height is 5 cm
The area is

<u>New triangle:</u>
The base is 
The height is 
The area is

Area decreases by

You might be interested in
Answer:
Step-by-step explanation:
α + β = -b/a
αβ = c/a
α² + β² = (α + β)² - 2αβ

Alice will have to pay alot... ALOT!
Answer:dk
Krk
Step-by-step explanation:
I think 6 but I’m not sure also how I got this answer is by simplifying 3/2 to 1 and a half so than I did 7 and a half - 1 and a half
Complementary means that the two angles sum to 90 degrees.
So based on the problem, let:
1st angle=5x+6
2nd angle=x
Now create an equation.
x+5x+6=90
6x=84
x=14
5x+6=76
answer: 14 degrees and 76 degrees