1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
3 years ago
7

Use the following information to complete parts I, II and III.

Mathematics
1 answer:
Ber [7]3 years ago
7 0

Answer:

see below

Step-by-step explanation:

Part I: Use scientific notation to estimate the number of hours in one year

Using the conversion factors

Estimate using scientific notation

31,556,952 seconds = 3.2 *  10^7

3600 seconds = 3.6 * 10 ^2

1 year = 3.2 *  10^7 seconds * 1 hour/ 3.6 * 10 ^2 seconds

3.2 /3.6 =.88888 (repeating)    

10^7 / 10^2 = 10^5

8.88888 * 10 ^5

8.888 * 10 ^4 hours

Part II: Use scientific notation to calculate the exact number of hours in one year.

 31,556,952 seconds = 3.1556952 *  10^7

3600 seconds = 3.6 * 10 ^2

1 year = 3.1556952 *  10^7 seconds * 1 hour/ 3.6 * 10 ^2 seconds

3.1556952 /3.6 =.876582    

10^7 / 10^2 = 10^5

.876582 * 10 ^5      

8.76582*10^4 hours

Part III: In two or more complete sentences, compare your answers to parts I and II. In your comparison, discuss similarities and differences in your answers.

Part II is an exact answer, where Part I is an estimate.  Both Parts give values in the thousands of hours,  and are both  between 8700 and 8900 hours.  Part I can be done without a calculator where Part II is much harder to do without a calculator.

You might be interested in
Solve each system of equations; nonlinear algebra 2<br><br> x2 + x + y - 26 = 0<br> x + y = 1
BigorU [14]

Answer:

(5,-4) and (-5,6)

Step-by-step explanation:

Given:

\left\{\begin{array}{l}x^2+x+y-26=0\\ \\x+y=1\end{array}\right.

Solve it. First, express y in terms of x from the second equation:

y=1-x

Substitute it into the first equation:

x^2+x+1-x-26=0\\ \\x^2-25=0\\ \\(x-5)(x+5)=0

Apply zero product property:

x-5=0\ \text{or}\ x+5=0

So,

x=5\ \text{or}\ x=-5

When x=5, then y=1-5=-4

When x=-5, then y=1-(-5)=6

We get two solutions: (5,-4) and (-5,6)

8 0
3 years ago
Can you solve 2x + 17 = 29 by first dividing and then subtracting? Do you get the same answer if you subtract first and then div
nikdorinn [45]

Answer:

You cannot divide first because in equations you need to isolate the variable, which means subtracting first. The outcome will be different if you change the order.

8 0
3 years ago
Read 2 more answers
You have $814 that you want to share equally between 5 charities.
kifflom [539]

Answer:

give each charity $60

Step-by-step explanation:

$814 to divide equally to 5 charities.

From 814  if we give   -100,  -100, -100, -100, -100, we have left 314 to split in 5

the most useful next step is to give each charity $60

From $814  if we give   -100, -100, -100, -100, -100

                                         -60, -60, -60, -60, -60  

we have left now:

814 -5*100 -5*60 = 814-500-300 = $14 left to split among the 5 charity.

6 0
2 years ago
You have 100 ft of fence to make a rectangle play area alongside the wall of your house. The wall of the house bounds 1 side. Wh
mafiozo [28]
Https://us-static.z-dn.net/files/db9/185b2fd8671d997f4457c16226cd4461.jpeg

7 0
3 years ago
What is y= 1/3 x - 9 written in standard form?
NISA [10]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • On Monday, Zach sends an e-mail message
    9·1 answer
  • Calculate the volume of the composite solid. Round your answer to the nearest hundreth
    5·1 answer
  • Select all ratios equivalent to 3:2.<br> 4:6<br> 25:20<br> 27:18
    10·2 answers
  • Marjani's garden contains roses, daffodils,and tulips.About 3/5 of the flowers are tulips.What percent of the flowers in Marjani
    14·1 answer
  • What is the value of k?
    6·1 answer
  • Prism A is similar to prism B. Find the volume of prism B if the volume of prism A is 4320 cm3
    9·2 answers
  • Finding area and perimeter of parallelograms and triangles
    15·1 answer
  • Pls answer me this all question correctly pls I beg you pls friends pls pls pls pls pls pls pls pls​
    5·1 answer
  • Find each product !!
    6·1 answer
  • Liza gets paid $5.50 an hour to babysit her little cousins. Last weekend, she watched them for three hours on Friday, nine hours
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!