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
Ulleksa [173]
3 years ago
15

Explain why 2n+1 must be an odd number

Mathematics
1 answer:
Lorico [155]3 years ago
4 0
If is an integer (a whole number), then the expression represents an even number, because even numbers are the multiples of 2. The expressions 2 n − 1 and 2 n + 1 can represent odd numbers, as an odd number is one less, or one more than an even number.
You might be interested in
Which situation could be solved using the equation-4+4=0
Taya2010 [7]
A change in temperature.
3 0
3 years ago
at elm elementary school for every 5 students who walk to school there are 7 students who take the bus.if 420 students attend el
Nesterboy [21]
175 students walk to school. 7+5=12 and 420 divided by 12 is 35. I checked how I did it was correct because of 5*35+7*35=420. Then I found the product of 5*35 which is 175.
4 0
3 years ago
Find the area of each circle. Round to the nearest tenth. Use 3.14 for π.
joja [24]

Answer:

1. 490.6 mm²

2. 14.1 ft²

Step-by-step explanation:

1. 3.14×(12.5)²= 3.14 × 156.25 =490.6mm²

2. ½×3.14×3²= 3.14×4.5= 14.1 ft²

3 0
3 years ago
Michael got 28 out of 33 points on his math test what percent of the questions did he get correct round your answer to the neare
belka [17]

28/33 × 100% = 0.84848... × 100% ≈ 85%

Michael got about 85% of the available points.

_____

Since we're not told the number of points per question, we don't actually have enough information to answer the question.

8 0
3 years ago
Suppose you have five books in your bookbag. three books are novels
mixer [17]
The complete question in the attached figure

we know that
The <span>probability on the first day is 3/5 since there are 3 novels out of 5 and when you take a book out at random, all of them have a equal chance of being picked. Since you returned the book to the bag, the next day too, we have the same probability. </span>

<span>Probability of a novel being grabbed both days is the product of the two probabilities-----> (3/5)*(3/5)----> 9/25

the answer is
9/25</span>

3 0
3 years ago
Other questions:
  • Let f(x)=15/(1+4e^(-0.2x)
    14·1 answer
  • Just questions 4, 5 and 6
    5·1 answer
  • I need help on this problem badly...!!!
    6·1 answer
  • An ice cream parlor has 54 flavors of ice cream. 4/9 of the flavors are sugar-free, how many flavors of ice cream are
    13·2 answers
  • What is the solution set of y = x2 + 2x + 7 and y = x + 7?
    5·1 answer
  • In a parking lot of 240 red and blue cars, the ratio of red cars to blue cars is 3 : 5.
    11·1 answer
  • The 2 ft side length of the scale drawing corresponds to a side length of 120 feet for the actual skate park. What is the scale
    14·2 answers
  • PLEASE HELP ME ( MULTIPLE CHOICE)!!
    6·1 answer
  • Ok pls help this needs to be answered fast
    5·1 answer
  • What is the sum?<br> 8+(-12)<br> -20<br> -4<br> 4<br> 20
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!