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
ipn [44]
3 years ago
8

If the numbers x+3,2x+1and x-7are in AP then find x​

Mathematics
2 answers:
tester [92]3 years ago
7 0

Answer:

x = -3.

Step-by-step explanation:

As it is an Arithmetic Progression the differences between successive terms are common, so:

2x + 1 - (x + 3) = x - 7 - (2x + 1)

2x - x + 1 - 3 = x - 2x - 7 - 1

x - 2 = -x - 8

2x = -8 + 2 = -6

x = -3.

o-na [289]3 years ago
5 0

Answer:

  -3

Step-by-step explanation:

If these numbers are part of an arithmetic progression, their differences are the same:

  (x -7) -(2x +1) = (2x +1) -(x +3)

  -x -8 = x -2

  -6 = 2x

  -3 = x

___

The numbers in the sequence are 0, -5, -10.

You might be interested in
Which statement about rhombuses and parallelograms is true?
puteri [66]

Answer:

Parallelograms ALWAYS have opposite sides parallel; rhombuses sometimes do not.

Step-by-step explanation:

i think

4 0
4 years ago
Solve the system: 10x-9y=8 21y+15x=0.5
artcher [175]

Answer:

x = 1/2 y = -1/3

Step-by-step explanation:

Split it into 2 equations:

10x-9y=8

and

21y+15x=0.5

10x - 9y = 8

Step 1: Divide both sides by 10:

x = (8+9y)/(10)

Substitute x = (8+9y)/(10) into 21y+15x=0.5 :

21y + (3(8+9))/(2) = 0.5

Solve for y

<u>y= -1/3</u>

Substitute y= -1/3 into x = (8+9y)/(10)

<u>x = 1/2</u>

<u />

3 0
3 years ago
Please help pleeaasssee
Ulleksa [173]

Answer:

10

Step-by-step explanation:

just do 4-18 and u get the answer

5 0
3 years ago
Read 2 more answers
HELP what is the value of x?
pochemuha

Answer: Value of x is used to consider unknown value. The letter “x” is commonly used in algebra to indicate an unknown value. It is referred to as a “variable” or, in some cases, a “unknown.” In x + 2 = 7, x is a variable. ... A variable need not be “x,” but might be “y,” "w," or any other letter, name, or symbol

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
How do write fifty and six hundredths in standard form
BaLLatris [955]
Well before the descimal its 5,600 after decimal is 0.56
5 0
4 years ago
Other questions:
  • This table shows values that represent an exponential function.
    12·2 answers
  • After placing an equation into his calculator Rob got the following table. He then determine that X=6 when f (x) = -4 is he corr
    9·1 answer
  • A spinner is divided into 3 equal sections and is spun 100 times landing on blue 48 times,red 22 times, and green 30 times. What
    5·1 answer
  • Can someone please help me with 49 and 50 please. I will give Brainliest Answer.
    8·1 answer
  • Which of the following is(are) the solution(s) to |6x - 5| = 7 ?
    15·1 answer
  • If five less than three times a number is equal to 10 what is the value of that number
    10·2 answers
  • Is it true that school= boring this is a big one LOL
    8·1 answer
  • 1. According to a recipe for cooking roast beef, it takes 3/4 hour for each pound of beef in an oven heated
    14·1 answer
  • HELP PLEASE!!!! ILL MARK U BRAINLESS FIRST PERSON TO ANSWER
    9·1 answer
  • Helppppp !!!!!! <br><br>5 ( 3a - 9 ) = ? ​
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!