Answer:
(a) 10.0 m²
Step-by-step explanation:
The radius of the inner circle is (2 m -1.1 m) = 0.9 m. The area of each circle is given by the formula ...
A = πr²
so, the difference in areas is ...
shaded = π(2 m)² -π(0.9 m)² = π(4 -0.81) m²
shaded area ≈ 10.0 m²
Area of parallelogram is Base×height
10×18=15× x
x= 12
hope it helps
Answer:
see explanation
Step-by-step explanation:
The 2 equations are
x + 2y = 8 → (1)
2x + 4y = 20 → (2)
we call n - the number
2×n + 15 = 3×n + 8
2×n - 3×n = 8 - 15
-n = -7 │ ×(-1)
n=7
To get from 40% to 100%, divide by 2 and multiply by 5.
I.e. 40/2 = 20
20 x 5 = 100%
Do the exact same for 102
102/2 = 51
51 x 5 = 255 students
