Answer:
9. 108 cm^2 or B
10. 1,080 m^2 or B
Step-by-step explanation:
9.
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=3·8+4·8+5·8+1
2·﹣34+2·(3·4)2+2·(3·5)2﹣44+2·(4·5)2﹣54
= 108
10.
A=ah+bh+ch+1
2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=15·24+8·24+17·24+1
2·﹣154+2·(15·8)2+2·(15·17)2﹣84+2·(8·17)2﹣174
= 1080
3x-4= - 10
add both side 4 so its a addition property
3x=- 6
now divide both side 3 so it is a <span>division property.
so x=-2</span>
Answer: C - 15.81
Step-by-step explanation:
pythagorean theorum: a^2 + b^2 = c^2
13^2 + 9^2 = c^2
169 + 81 = c^2
c^2 = 250
root both sides
c = 15.81
53 because it is the last one all the others have 54
Okay so 48 would be in and 1,261 would be out and do the math