Width= W
length=2w+11
diagonal=2w+13
use the Pythagorean Theorem
(2w+13)^2=w^2+(2w+11)^2
4w^2+52w+169=w^2+4w^2+44w+121
simplify
52w+169=w^2+44w+121
w^2+44w-52w-169+121=0
w^2-8w-48=0
factor
(w-12)(w+4)=0
w-12=0
w=12 inches (width)
l=2*12+11=35 inches (length)
Answer:
E) 79.7 cm^2
Step-by-step explanation:
This is really messy so I think the choices are A) to E) only
I think its 6cm 7.2cm 2.8cm 10cm
1. Multiply all
6 * 7.2 + 2.8 * 10 > 70
2. Around 79.7
Answer: 195
Step-by-step explanation:
(0.3x + 66) + (0.1x + 36) = 180. ( 180 because thats the angle of a straight line)
0.3x + 0.1x + 66 + 36 = 180
0.4x + 102 = 180
0.4x = 180 - 102
0.4x = 78
x = 195