Answer:
B = 60°; c = 30; b = 25.98
Step-by-step explanation:
1. Calculate ∠B
∠A + ∠B + ∠C =180°
30° + ∠B + 90° = 180°
∠B + 120° = 180°
∠B = 60°
2. Calculate c
sinA = a/c
sin30° = 15/c
½ = 15/c
c = 2 × 15 = 30
3 .Calculate b
sinB = b/c
sin60° = b/30
√3/2 = b/30
b = (30√3)/2 = 15√3 = 25.98
Answer:
So, hour 0 and charge is 0. hour 1 is 25, hour 2 is 50, hour 3 is 75, hour 4 is 100 and hour 5 is 125
Step-by-step explanation:
For every hour, add 25 in each box.
Answer:
x = 20
Step-by-step explanation:
Since the triangles are similar then the ratios of corresponding sides are equal, that is
= 
( cross- multiply )
9x = 180 ( divide both sides by 9 )
x = 20
Answer:
(x + 8) / 4 = (x - 3) / 2 | *4
x + 8 = 2 * (x - 3)
x + 8 = 2 * x - 6
8 = x - 6
14 = x
The number is 14.
(14 + 8) / 4 = (14 - 3) / 2
22 / 4 = 11 / 2
5.5 = 5.5
