Can't there be infinite answers? I think is one though
Answer:
Area =100 in^2
Step-by-step explanation:
scale factor of the triangles is :15/21=5/7
if two similar shape has a scale factor a/b then the area is a^2:b^2
area of first shape/area of second shape=5/7
x/196=(5)²/(7)²
49x=4900
x=4900/49=100
area=100
check: 100/196=25/49=a^2/b^2
i hope it is right
Answer:
19. x=28°
<E = 67°
20. x= 9°
<L = 25°
Step-by-step explanation:
19. Supplementary means that the angles will add to make a straight line, or they will add to = 180
<L+<E = 180°
4x+1°+3x-17°=180°
7x-16°=180°
7x=196°
x=28°
Measure of Angle E
<E = 3x-17° = 3(28°)-17° = 67°
20. Vertical angles are congruent, or equal to each other.
<L = <E
2x+7° = 4x-11°
2x+18° = 4x
18° = 2x
9° = x
x = 9°
<L = 2x+7° = 2(9°)+7° = 18°+7° = 25°
Find total surface area (18*12)*2+ (18*8)*2+ (12*8)*2= 192 +288 432+288+192= 912
then subtract surface area of doors
(3*7)2=42 then subtract windows 3*5(3)=45 then subtract the floor 18*12=216
912-42-45-216= 609 sq ft he should only need 2 and a small portion of a third to paint your room i believe what his math must have been was 18*12*8=1728 then subtract -42-45-216 for the floor windows and doors to get 1425 and even then he underestimates with his inaccurate figures
so first 609 sq ft he should only need 2 and a small portion of a third to paint your room and 2 get a new painter bcus this guy cant math hope i helped if so give brainliest answer-J (:
