1 answer:
Answer:
x = 66
Step-by-step explanation:
Shapes with four sides are always 360 degrees
x + x - 20 + x + 40 + 2x + 10 = 360
combine like terms
5x + 30 = 360
subtract 30 from both sides
5x = 330
divide 5 from both sides
x = 66
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Answer:
Step-by-step explanation:
Area of a triangular face = 0.5(base)(slant height) = 0.5(10)(13) = 65 sq cm
Lateral area = 4(65) = 260 sq cm
Percent error = |actual error - expected error/ expected error| * 100%
(|75-95|)/95 = 0.21
0.21 * 100% = 21% error
Answer:
27.5 m/s
275 m
Step-by-step explanation:
99 km/hr × (1000 m / km) × (1 hr / 3600 s) = 27.5 m/s
Distance = rate × time
d = 27.5 m/s × 10 s
d = 275 m
10'2 X2
20X2
.......................
180 x (1-30%)
=180 x 0.7
=$126
