Answer:
55 white
Step-by-step explanation:
So ratio 5:4 is essentially saying, for each 5 white marbles, there are 4 red ones. This can be represented in the equation: 5x+4x=99. We specifically want an integer solution. Because what is 1.2 of a marble? And what is -1 marbles? So as x increases by 1, the entire thing increases by 9. This gives you the equation: 9x=99 which gives you x=11. So there are 55 white and 44 red.
Hi there,
I believe there are 3 questions.
- 2+5=8-1 It is true because 2+5 is 7 and 8-1 is 7. So, both sides have same value which means they are equal.
- 4+2=9-1 It is false because 4+2 is 6 and 9-1 is 8. So, the values are different.
- 13-0=12+1 It is true because 13-0 is 13 and 12+1 is 13. Both values are same. Therefore, they are equal.
Hope it helps :-)
Answer:
-3-(-7)=4 ,-7-(-3)=-4
Step-by-step explanation:
+ × += +
- × - = +
