Answer:
13
Step-by-step explanation:
To solve this you have to add 9 and 4 first so you get 13. Next, you have to subtract 8 from 7 so you get 1. Now all you have to do is multiply 13 and 1 so you get 13 as your answer.
9 + 4 = 13
8 - 7 = 1
13 × 1 = 13
I hope this helps you :D
Answer:
x > 3
Step-by-step explanation:
The inequality to solve is:
5 - 4x < - 7
We will solve this using same method as solving an equation. We will take numbers to one side and variables to another and multiply and divide accordingly.
So,

That means "x is greater than 3", so we can write:
x > 3
Answer:

Step-by-step explanation:


Add
to both sides

Add
both sides


Divide both sides by 


But
can't be zero because it is undefined. So,

Maximum 9 boxes as that is 432 kg total, any more boxes would be more than the elevator can take
woah this is some crazy is