lesson 2: points on the number line lets plot positive and negative numbers on the number line. 2.1: a point…
lesson 2: points on the number line lets plot positive and negative numbers on the number line. 2.1: a point on the number line which of the following numbers could be b? 2.5 2/5 5/2 25/10 2. 2.2: whats the temperature? 1. here are five thermometers. the first four thermometers show tempera celsius. write the temperatures in the blanks. a. ___ b. ___ c. ___ d. ___
Answer
Explanation:
Step1: Analyze position of B on number - line
The point B is between 2 and 3.
Step2: Evaluate each option
- For $\frac{2}{5}=0.4$, it is not between 2 and 3.
- For $\frac{5}{2} = 2.5$, it is between 2 and 3.
- For $\frac{25}{10}=2.5$, it is between 2 and 3.
- 2.5 is also between 2 and 3.
For 2.2:
Step1: Read thermometer a
The liquid - level in thermometer a is at 1, so the temperature is $1^{\circ}C$.
Step2: Read thermometer b
The liquid - level in thermometer b is at - 2, so the temperature is $-2^{\circ}C$.
Step3: Read thermometer c
The liquid - level in thermometer c is at 3.5, so the temperature is $3.5^{\circ}C$.
Step4: Read thermometer d
The liquid - level in thermometer d is at - 1, so the temperature is $-1^{\circ}C$.
Answer:
2.1: 2.5, $\frac{5}{2}$, $\frac{25}{10}$ 2.2: a. $1^{\circ}C$ b. $-2^{\circ}C$ c. $3.5^{\circ}C$ d. $-1^{\circ}C$