Answer:
maybe 2 only?
Step-by-step explanation:
I'm just guessing but it sounds right
Answer:
(20 + 1) + (30)
Step-by-step explanation
i think that is the answer sorry if i'm wrong
Answer:
3/11
3:11
Step-by-step explanation:
Answer:
Step-by-step explanation:
quadratic formula
x = -(-5)+
Answer:
a) 952
b) 136
Step-by-step explanation:
<u>Ratio of b:g = 3:4, based on this we have:</u>
- Number of boys = 3x
- Number of girls = 4x
- Total number of pupils = 3x+4x = 7x
<u>Number of spectacle wearers:</u>
- 1/3*3x + 3/8*4x = x + 3/2x = 2.5x
<u>Number of those not wearing spectacles:</u>
<u>And this number equals to 612, then we can find the value of x:</u>
- 4.5 x = 612
- x= 612/4.5
- x= 136
a) T<u>otal number of pupils:</u>
b)<u> The difference in the number of boys and girls:</u>
