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
Pavel [41]
3 years ago
9

For what value of k will k+9,2k-1 and 2k+7 are the consecutive terms of an A.P

Mathematics
1 answer:
Stolb23 [73]3 years ago
8 0

k = 18

the common difference d of an arithmetic sequence is

d = a₂ - a₁ = a₃ - a₂ = ....

a₂ - a₁ = 2k - 1 - k - 9 = k - 10 and

a₃ - a₂ = 2k + 7 - (2k - 1) = 2k + 7 - 2k + 1 = 8, hence

k - 10 = 8 ⇒ k = 8 + 10 = 18

the 3 consecutive terms are

27, 35, 43


You might be interested in
What is true about a function?
mars1129 [50]

Answer: Your answer is the third one, a function assigns to each input exactly one output.

If you have a true function, there will only be one output for each input, if you had more than one, it isn't a function.


6 0
3 years ago
Read 2 more answers
Which expression is equal to<br> 5, ?<br> A<br> 542<br> B.<br> 51<br> Cw<br> D.<br> 254
nirvana33 [79]

Answer:

don't understand the full question

3 0
3 years ago
The ratio of boys to girls in a group is 7:1. If there are 66 more boys than girls, work out how many girls there are
nevsk [136]

Answer:11

Step-by-step explanation:

Boys : girls=7:1

Sum of ratio=7+1=8

Let them number of girls be y

Then they number of boys=y+66

Total number of pupils=y+y+66

Total number of pupils=2y+66

Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils)

y=1/8 x (2y+66)

Cross multiply

y x 8=2y + 66

8y=2y + 66

Collect like terms

8y-2y=66

6y=66

Divide both sides by 6

6y/6=66/6

y=11

The number of girls is 11

4 0
3 years ago
If there were 81 rows of green apple and each tree produced 542 apples how many green apples would there be in all
Anna35 [415]
81 apple trees
542 apples per tree
81 x 542 = 43,902 green apples
6 0
3 years ago
Read 2 more answers
I NEED HELP PLEASE IM BEGGING YOU
horrorfan [7]

Answer:

$2

$1.26

Step-by-step explanation:

pls give brainliest if you can

8 0
3 years ago
Read 2 more answers
Other questions:
  • The area of the irregular polygon is ____ square units.
    13·1 answer
  • HHHHHEEEEELLLLLPPPPPP
    12·1 answer
  • A quadratic equation is written in four equivalent forms below.
    12·1 answer
  • –125 ÷ –5 = ? A. –23 B. –25 C. 23 D. 25
    15·2 answers
  • Gwenyth deposited money into her savings account that is compounded annually at an interest rate of 15%. Gwenyth thought the equ
    8·1 answer
  • Just some simple math fro points reward brainliest
    14·1 answer
  • What is the area of this parallelogram
    9·1 answer
  • This one says (cos) , help it’s timed ! Take me through the process !
    12·1 answer
  • Write an expression for the perimeter of the triangle shown below
    14·2 answers
  • 0.33+0.09= m mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!