Answer:
A survey among 500 grade 3 pupils revealed that 150 of them stayin the playground after their classes. Use 95% confidence to conduct a test of proportion. 1 1.
Step-by-step explanation:
4 x+9=13 X=4 subtract 9 from the 9 and 13 and 13-9 =4 so x=4
17/10-(2/5x2/2)
17/10-4/10
=13/10
Answer:
6 minutes
Step-by-step explanation:
- Set up the proportion as these two fractions equal to each other
9/3 = 18/x
2. Cross multiply so that 9*x=18*3
3. 9x=54, so now you divide 54 by 9
and this will give you
4. x= 6, so it will take 6 minutes to fill
up the 18 gallon pool
Hope this helped!
