I think it is the second one if I'm correct which probably I'm am wrong so don't take my word but if you want to
Answer:
5/8
Step-by-step explanation:
How much pizza is left between Mary and Hector combined?
Since both had a medium pizza, we'll say the pizzas were the same size.
So, we just have to make the sum:

The addition is easy since both members of the addition have the same denominator (8). So, we just have to add up the numerators.
Since 5/8 is already expressed to its most simple expression, that's the answer.
Answer:
Step-by-step explanation:
First question
x = 4/10 = 0.4 (type 0.4)
Second Question
x = 0.04/10 = 4/1000 = 0.004 (type 0.004)
Third Question
x = 0.4/10 = 4/100 = 0.04 (type 0.04)
Fourth Question
x = 40/10 = 4 (type 4)
You need a protractor. That's the only way you can measure the angles