Answer:
m∡A = 100°
m∡B = 50°
m∡C = 30°
Step-by-step explanation:
let 'x' = m∡B; 50°
let '2x' = m∡A; 100°
let 'x-20' = m∡C; 30°
x + 2x + x - 20 = 180
4x - 20 = 180
4x = 200
x = 50
Answer: v^2 -4v-21
Step-by-step explanation:
Answer:
The Large Box Weighs 18 kg, and the small box weighs 6.5 kg
Step-by-step explanation:
Let a= the weight in kg of a large box
Let b= the weight in kg of a small box
Multiply both sides of (1) by 4 and subtract (2) from (1)
1. 20a+8b=412
2. -3a-8b= -106
17a=306
a=18
and
5*8+2b=103
90+2b=103
2b=13
b=6.5
Answer:
Step-by-step explanation:
<u>Volume:</u>
<u>Given r = 5 cm and V = 110 cm³, find h:</u>
- 1100 = π(5²)h
- 1100/25 = πh
- 44 = πh
<u>Curved surface area:</u>
- S = 2πrh = 2*5*πh = 10*44 = 440 cm²
Correct choice is C
