Answer: 7 to 4
Step-by-step explanation: There are 16+12=28 total students, and 16 boys. Therefore, the ratio is 28:16, but you must simplify that, you can do this by dividing both values by 4 to get 7:4.
Answer:
y=17
Step-by-step explanation:
51/3
Hope this helps!
Answer:
51.96 mm
Step-by-step explanation:
Perimeter of circle = 2 × pi × r
Perimeter of small circle
= 2 × 3.14 × 10/2
= 31.4 mm
half of perimeter of small circle = 31.4/2 = 15.7 mm
Perimeter of large circle
= 2 × 3.14 × (5+4)
= 2 × 3.14 × 9
= 56.52
half of perimeter of large circle = 56.52/2 = 28.26 mm
All line = half line small circle + half line large circle + (4 × 2)
All line = 15.7 + 28.26 + 8
= 51.96 mm
Answer:
we conclude that:
Hence, the last option i.e. 
is correct.
Step-by-step explanation:
Given the expression
Combining the radical expressions
let us first solve
Apply radical rule: 
Apply radical rule: 
Thus,
similarly solving
Apply radical rule:
Apply radical rule:
Thus,
so we get
so the expression becomes
∵ ,
∵ 
Therefore, we conclude that:
Hence, the last option i.e. is correct.
