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
user100 [1]
3 years ago
15

Based on the table, what is Nick's rate?

Mathematics
1 answer:
Nookie1986 [14]3 years ago
5 0
7 yrds/sec because in the course of two seconds, he runs 14 yrds divide that by 2 to get 7 yrds/sec. you can allo chech with the next time which is 3 seconds more and he goes 21 yards more.
You might be interested in
Please help ASAP !!
timama [110]

Answer:

3rd one or infinite

Step-by-step explanation:

3 0
2 years ago
What are the types of roots of the equation below?<br> - 81=0
Tju [1.3M]

Option B, that is Two Complex and Two Real which are x + 3, x - 3, x + 3i and x - 3i, are the types of roots of the equation x⁴ - 81 = 0. This can be obtained by finding root of the equation using algebraic identity.    

<h3>What are the types of roots of the equation below?</h3>

Here in the question it is given that,

  • the equation x⁴ - 81 = 0

By using algebraic identity, (a + b)(a - b) = a² - b², we get,  

⇒ x⁴ - 81 = 0                      

⇒ (x² +  9)(x² - 9) = 0

⇒ (x² + 9)(x² - 9) = 0

  1. (x² -  9) = (x² - 3²) = (x - 3)(x + 3) [using algebraic identity, (a + b)(a - b) = a² - b²]
  2. x² + 9 = 0 ⇒ x² = -9 ⇒ x = √-9 ⇒ x= √-1√9 ⇒x = ± 3i

⇒ (x² + 9) = (x - 3i)(x + 3i)

Now the equation becomes,

[(x - 3)(x + 3)][(x - 3i)(x + 3i)] = 0

Therefore x + 3, x - 3, x + 3i and x - 3i are the roots of the equation

To check whether the roots are correct multiply the roots with each other,

⇒ [(x - 3)(x + 3)][(x - 3i)(x + 3i)] = 0

⇒ [x² - 3x + 3x - 9][x² - 3xi + 3xi - 9i²] = 0

⇒ (x² +0x - 9)(x² +0xi - 9(- 1)) = 0

⇒ (x² - 9)(x² + 9) = 0

⇒ x⁴ - 9x² + 9x² - 81 = 0

⇒ x⁴ - 81 = 0

Hence Option B, that is Two Complex and Two Real which are x + 3, x - 3, x + 3i and x - 3i, are the types of roots of the equation x⁴ - 81 = 0.

Disclaimer: The question was given incomplete on the portal. Here is the complete question.

Question: What are the types of roots of the equation below?

x⁴ - 81 = 0

A) Four Complex

B) Two Complex and Two Real

C) Four Real

Learn more about roots of equation here:

brainly.com/question/26926523

#SPJ9

5 0
1 year ago
Please help I will give 15 points and a Brainlylist
Paladinen [302]

Answer: 6/14 and 42/99

Step-by-step explanation:

4 0
2 years ago
Which of the following statements is true for ∠a and ∠b in the diagram?
Iteru [2.4K]

Answer:

B because they are the same angle

8 0
2 years ago
Read 2 more answers
How would you graph -x plus 2 thx
alexira [117]
F(x)= -x + 2

Plug in the X and you will find the Y
3 0
2 years ago
Other questions:
  • (-8,-9) and (3,4) find the slope of the line through the pair of points.
    11·2 answers
  • 2(-3n-5)-5(4n-8) Simplify
    14·2 answers
  • What division statements have a quotient of 20
    5·1 answer
  • When making pink paint, the art teacher uses the ratio 3:2. For every 3 cups of white paint she uses in the mixture, she needs t
    12·1 answer
  • I need some help with math
    14·1 answer
  • Jean works for the government and was conducting a survey to determine the income levels of a number of different neighborhoods
    10·1 answer
  • I need help with geometry question!
    15·1 answer
  • John spent about 12.5 hours at a water park. He estimated he spent about 30% of the time waiting in line. What would be a reason
    15·1 answer
  • -10 + 10у + -3y +7<br> DOES ANYONE KNOW THE ANSWER????????????
    12·1 answer
  • Each side of the square base is 5 inches long and the height of the pyramid is 5 inches. Approximately how much wood is in the p
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!