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
Roman55 [17]
3 years ago
6

The common difference ,d in an arithmetic sequence whose fourth term is 16 and whose seventh therm is 31

Mathematics
1 answer:
Natali [406]3 years ago
3 0

Answer: d=5

Step-by-step explanation:

Arithmetic progression

An=a1+d(n-1)

An= nth term

A1= first term

D= common difference

N= nth position

We are given the 4th and 7th terms

For 4th term,n=4

A4=a1+d(4-1)

A4= 16

16= a1+d(4-1)

16= a1+3d........equation 1

For the 7th term,n=7

A7=a1+d(7-1)

A7= 31

31=a1+6d......equation 2

Bring them together

16=a1+3d

31=a1+6d

Subtract equation 1 from 2

So we have

15=3d

D=15/3

D=5

Therefore, the common difference is 5

You might be interested in
Mei is making fruit punch.
sp2606 [1]

Answer:

16.2p (If lemonade is .75p, if not substitute in the equation below)

Step-by-step explanation:

In 4 liters, there would be 3 liters of lemonade and 1 liter in juice.

I am assuming 75p is meant to be .75p

So 4 liters costs: (1 x 1.8) + (3 x .75) = 4.05

We need 16 so: 4.05 x 4 = 16.2

6 0
2 years ago
Solve the system of equations.<br> 2.5y + 3x = 27<br> 5x – 2.5y = 5
worty [1.4K]
X=4 and y=6
For this, you should use simultaneous equations
3 0
3 years ago
Tell if the Ratio is Part-to-part or part-to-whole<br><br> 4 apples to 3 oranges
Pepsi [2]

Answer: Part-to-part

Step-by-step explanation:

This is a part-to-part, because they show part of apples, and part of oranges. This ratio when set up is 4:3. If the ratio was part-to-whole, then the apples would be compared to the total amount of oranges and apples. The ratio for part-to-whole would be 4:7.

Hope this helps!

4 0
2 years ago
PLS HELP ASAP WILL MARK BRAINLIEST
Lady_Fox [76]
Yes he will



Because math is cool
3 0
3 years ago
Read 2 more answers
why do the products of multidigit numbers with zeros &amp; one digit sometimes have zeros in them &amp; sometimes have no zeros
Bingel [31]
Im not quite triggered but U should go to mathantics.com or watch his videos to find it out :D
3 0
3 years ago
Read 2 more answers
Other questions:
  • If ƒ(n) = 3n 2 - 7, then ƒ(-2) equals _____.
    10·1 answer
  • What is the value of x?
    12·1 answer
  • The smallest known bacteria are from the genus Mycoplasma and can measure as small as 300 nanometers in diameter. Given that 1 m
    13·1 answer
  • There was a total of $548 collected for tickets to the school musical. The adult tickets cost $6 and the student tickets cost $4
    14·1 answer
  • Express 17.1 6 as a mixed number in lowest terms
    11·1 answer
  • Someone please help me
    14·1 answer
  • Please help me with this one!
    7·1 answer
  • According to a study done by Nick Wilson of Otago University Wellington, the probability a randomly selected individual will not
    12·1 answer
  • Please answer this math problem sceenshot below
    5·2 answers
  • Help please
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!