Answer:
by factoring the answer is - x=1/2, 5
Step-by-step explanation:
hope it helps:))
Answer:

Step-by-step explanation:

1:10 or 100:1000 so the point is to just add one zero to each side and you'll get it right
Answer:
590
Step-by-step explanation:
To the ten that is nearest to 593
Answer:
B
Step-by-step explanation:
In A, it says that 9s +7c can be lower or equal to 160. This is wrong.
In C, it says that 9s +7c can only be higher than 160, when the question says at least, which means it can also be equal to 160, making it wrong.
In D, it says that 9s +7c can be lower or equal to 20. This is wrong.
Through elimination, only B can be right.