14. 1/5, 3/10, 12/25, 1/2,4/5
15. i suck at negatives whoops
16.
17.
18.
19. 6/5, 4/4, 29/20, 3/2
20. i suck :D
21. To compare 0.7 and 5/8, you would have to first turn the decimal into a fraction. After you have your fraction you want to simplify it down to the smallest fraction and compare with 5/8. You also want to find the common denominator.
5x-7y=10
-7y=10-5x
y=(10-5x)/-7
y=10/-7-5x/-7
y=5x/7-10/7
hence C is correct option
Answer: 3444 boys, 4182 girls
Let there be 14x boys and 17x girls. Then there are 31x total students. Since 31x = 7626, x = 246. Then there are 14(246) = 3444 boys and 17(246) = 4182 girls.
i hope this was helpful! :D
4,6,8 are being counted by twos so the next one is 10
4•3= 12, 6+3=9, 8-3=6, the next operation I assume would be division so 10/3= 3.34
