Which number sentence does the following number line represent

Answer

Part 1: 3 + (-7) = -4

Part 2: Irrational numbers

Explanation

Part 1

A number line can be used to add and subtract integers. When adding positive numbers we move to the right and when adding negative numbers we move to the left.

When subtracting positive numbers we move to the left and when subtracting negative numbers we move to the right.

∴ From the number line shown above we are moving 7 steps to the left. this means we adding a (-7) to 3. This give the answer as (-4).

         3 + (-7) = -4

Part 2

√7 = 2.645751311...

This number is not a whole number neither can it be written as a ratio. That is it can not be written in the form of a/b where b≠0. Such numbers are called irrational numbers.

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.