Answer:
132 and 88
Step-by-step explanation:
If there are 20% more boys than girls, then this means that the total percentage of boys us 60% and girls is 40%.
0.6 * 220 = 132
0.4 * 220 = 88
There are 132 boys and 88 girls in year 9
Answer:
4353.5
Step-by-step explanation:
2 bedrooms and a living room, sorry I forgot to add that in, there's also 3 small windows and a large one
3 rooms
552*3 = 1656
small window = 539.50 * 3 = 1618.50
Large window - 2*539.50 = 1079
1656+1618.5+1079=4353.5
Answer:
5.
Step-by-step explanation:
Use a proportion.
Answer: Option C
Step-by-step explanation:
In group(1), the risk is= 5/2000 x 100
= 0.25
In group(2), the risk is= 5/1000 x 100
= 0.5
The sample relative risk is= 0.25/0.5
= 0.5
So, option C is correct.
Let's call our number <em>x</em>.
So we can setup the equation x² = 100.
To solve this equation, we square root both sides.
So we have x = ±10.
Always use plus or minus when square rooting both sides
of an equation so our answer is not only 10, it's also -10.
