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
hoa [83]
3 years ago
5

Does anyone know the answer pleaseeee

Mathematics
2 answers:
Veseljchak [2.6K]3 years ago
8 0

Answer:

A, B, C are false. D, E, F are true

Step-by-step explanation:

let's use the number 3 as a case study

A. 3²-1 = 9 - 1 = 8 (false)

B. 3(3-1) = 3 × 2 = 6 (false)

C. (3-1)² = 2² = 4 (false)

D. 3² + 2 = 9 + 2 = 11 (true)

E. 3(3-2) = 3 × 1 = 3 (true)

F. (3-2)² = 1² = 1 (true)

Sav [38]3 years ago
7 0
I’m pretty sure a, d, e and f are correct :)
You might be interested in
What is X? x divided by 4/9 = 9/10
Damm [24]

Answer:

2/5

Step-by-step explanation:

\frac{x}{\frac{4}{9} } =\frac{9}{10}

(\frac{9}{10})(\frac{4}{9} )=\frac{36}{90}

36 divided by 90 is 2/5.

When solving for X you do the opposite to a number if you are moving it to the other side of the problem. so, since x is being divided by 4/9, 4/9 would be multiplied to the opposite or to the 9/10.

7 0
3 years ago
While training for a marathon, Jeff wants to increase the number of miles he runs each day. On the first day of training, Jeff r
user100 [1]

Answer:

The series is 5 , 6 , 7 , 8 , 9 , 10 , 11

Step-by-step explanation:

* Lets revise the arithmetic series

- In the arithmetic series there is a constant difference between

 each two consecutive numbers

- Ex:

# 2  ,  5  ,  8  ,  11  ,  ……………………….  (constant difference is 3)

# 5  ,  10  ,  15  ,  20  ,  …………………………  (constant difference is 5)

# 12  ,  10  ,  8  ,  6  ,  ……………………………  (constant difference is -2)

* General term (nth term) of an Arithmetic series:

- If the first term is a and the common diffidence is d, then

 U1 = a  ,  U2  = a + d  ,  U3  = a + 2d  ,  U4 = a + 3d  ,  U5 = a + 4d

- So the nth term is Un = a + (n – 1)d, where n is the position of the

 number in the series

* Lets solve the problem

- Jeff wants to increase the number of miles he runs each day

∴ He will add the initial value by constant number each day

- He plans on increasing the number of miles he runs a day by 1

∴ The constant value is 1 mile

-  On the first day of training, Jeff runs 5 miles

∴ The first value is 5 miles

∴ The series is arithmetic

∵ a = 5 , d = 1

- He do that for the remainder of the week

∵ The week has 7 days

∴ The series has 7 terms

∵ The rule of the series is Un = a + (n - 1)d

∵ a = 5 and d = 1

∴ Un = 5 + (n - 1)(1)

∴ Un = 5 + n - 1

∴ Un = 4 + n ⇒ n is the position of the number

- Substitute n from 1 to 7 to find the series

∴ The series is 5 , 6 , 7 , 8 , 9 , 10 , 11

6 0
3 years ago
Use the information and diagram to answer the following question.
nevsk [136]

Answer:

910 ft

Step-by-step explanation:

This question sets up the equation tan20°=x/2,500. Solve for X by multiplying 2,500 on both sides giving you x = 2,500tan20°. Finally, plug that in a calculator and you get 909.92. Round it to the nearest foot and you get 910

5 0
3 years ago
dude, I just got almost all of my points taken away from somebody that has 0 answers, 0 questions, and almost 2 million points..
Finger [1]

Answer:

:O

Step-by-step explanation:

7 0
3 years ago
I HAVE TO ADD SMTH HERE
mel-nik [20]

Answer:

-7

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • BRAINLEST HELPPP ME PLZZZZZZZZZZZZZ
    6·2 answers
  • Chips Ahoy wants to perform a study to determine the number of chocolate chips in their cookies. To that end, they collected a s
    7·1 answer
  • The hanger image below represents a balanced equation.
    9·1 answer
  • Given 4x+5y=2b and x+3y=b what is the value of 17y
    13·1 answer
  • Find the difference between the polynomials: –3x+x^3–2x^2 and 4x^3–2x^2–4x<br> PLEASE HELP
    14·1 answer
  • What is (3 − 5i) − (-2 − 5i)?
    10·1 answer
  • Algebra help anyone?
    9·1 answer
  • Jayne uses long division to convert a rational number ab to a decimal. Which of the following statements cannot be true?
    5·1 answer
  • Which equation is written in standard form?
    6·2 answers
  • From 8 abc subtract abc. from 8 abc subtract 8
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!