Mathematics: In 2017, there were about 21 million teenagers (aged 13-17) in the United States. They each sent an average of 800 text messages per month. About how many text messages did all of the teenagers in the United States send each month? Express your answer using scientific notation. Show work for full credit.

In 2017, there were about 21 million teenagers - id2017215413903, mobslayer88

craincrew5239

20.01.2022

The Number of text messages sent in a month is 1.68 × $10^{(-8)}$

Step-by-step explanation:

Step 1 :

Total number of teenagers in United States = 21 million

Average text messages sent per month = 800

We need to find the number of text messages sent each month

Step 2 :

The number of text messages in a month can be computed by taking the product of the total number of teenagers and average messages sent per month

Therefore

Number of text messages that is sent in a month = 21 million × 800

= 21 × $10^{6}$ × 800

= 168 × $10^{6}$ = 1.68 × $10^{(-8)}$

Step 3 :

Answer :

The Number of text messages that is sent in a month is 1.68 × $10^{(-8)}$

0,0(0 оценок)

sjharrison04

26.05.2021

The best estimate for the mass of a bicycle is about 1 kilogram.

Step-by-step explanation:

The standard International System of Units (SI) unit of mass is the kilogram denoted by kg .

It is used world wide for measuring the mass of an object .

Smaller units of the mass is gram it is denoted by g .

Therefore the best estimate for the mass of a bicycle is about 1 kilogram .

0,0(0 оценок)