Answer: x=2
both 3 and 9 share the same x axis
Answer:
5400 students
Step-by-step explanation:
30000×0.6(60%)=18000
18000×0.3(30%)=5400
Answer:
0
giomarsh
15 answers
24 people helped
Answer:
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Explanation:
Step-by-step explanation:
Answer:
(a) AD=6 cm
(b) 66 cm²
(c) 38 cm
Step-by-step explanation:
(a) To get the length of AD, we can use pythagoras on the triangle part. Let's say the dotted line intersects DC at E. Then since AB and DC are parallel, AD is equal to BE. EC = 8 cm simply by subtracting AB from DC (15-7=8).
Then pythagoras says that 8²+BC²=10². So BC = √(100-64) = 6. And since BC=AD, AD is also 6.
(b) Area of the rectangle DEBA is 7*6 = 42. Area of triangle ECB is base times half height: 8*3 = 24. Sum is 42+24 = 66 cm²
(c) Perimeter is 7+10+15+6 = 38 cm. Add all the side lengths.
8x-2y=12
-2y=-8x+12
y=4x-6
y=4(0)-6
y=-6
(0,-6)