Answer:
See attachment
Step-by-step explanation:
- <em>Remember: height is always perpendicular to the base</em>
<em>See attached for answer</em>
<em />
AREA OF A RECTANGLE IS 42 UNITS
Rectangle: Triangle:
A = L * W A = hb / 2
A = (x-8) * 6 A = (7(x-3)) / 2
A = 6x - 48 A = (7x - 21) / 2
Since the problem states that both rectangle and triangle have the same area.Then:
6x - 48 = (7x - 21) / 2
1) Eliminate the denominator 2 by multiplying both sides by 2.
2 * (6x - 48) = 2 * ((7x - 21) / 2)
12 x - 96 = 7x - 21
Find x. Transfer like numbers and change their signs.
12x - 7x = 96 - 21
5x = 75
5x / 5 = 75 / 5
x = 15
Substitute x by its value:
Rectangle: Triangle
A = (x-8) * 6 - A = (7(x-3)) / 2 Areas of both Rectangle
A = (15 -8 ) * 6 A = (7(15-3)) / 2 and Triangle is the same.
A = 7 * 6 A = (7 * 12) / 2
A = 42 units A = 84 / 2
A = 42 units
To convert a fraction to a percent you first, turn the fraction to a decimal, by dividing the numerator by the denominator. Then to convert it to a percent you multiply the decimal by 100, and to the product put a percentage sign,, and there is you r answer.
Example:-

3 ÷ 4 = 0.75
0.75 × 100 = 75%
So, 3/4 in percentage form is 75%.
Hope I helped ya!! xD
Yes because it has one right angle (90°)