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
olganol [36]
2 years ago
13

If a1=7 and an=an-1+5 than find the value of a5 ​ .

Mathematics
1 answer:
Katyanochek1 [597]2 years ago
4 0

Answer:

a₅=27.

Step-by-step explanation:

1) according to the condition the given subsequence is arithmetic sequence. It means, the a₁=7 and d=5, then

2) a₅=a₁+4*d; => a₅=7+4*5=27.

You might be interested in
A new test has been developed to detect a particular type of cancer. The test must be evaluated before it is put into use. A med
Troyanec [42]
The tree diagram of the problem above is attached
There are four outcomes of the two events,

First test - Cancer, Second Test - Cancer, the probability is 0.0396
First test - Cancer, Second Test - No Cancer, the probability is 0.0004
First test -  No Cancer, Second Test - There is cancer, the probability is 0.0096
First test - No cancer, Second Test - No cancer, the probability is 0.9054

The probability of someone picked at random has cancer given that test result indicates cancer is  \frac{0.0396}{0.0396+0.0096}= \frac{33}{41}

The probability of someone picked at random has cancer given that test result indicates no cancer is \frac{0.0396}{0.0004+0.9504} = \frac{99}{2377}

7 0
3 years ago
Which is more less -300 or -23
Ket [755]

Answer:

-300

Step-by-step explanation:

because is in the negative and is a number bigger than 23 but in negative.

3 0
3 years ago
How to show the ratio 3:8 is equal to 12:32
Agata [3.3K]
12:32 is simply 3:8 but divided by 4 to both sides.
3 0
3 years ago
Read 2 more answers
(ILL GIVE BRAINLIEST!!)<br><br><br> What is friction and when does it occur?
docker41 [41]

Answer:

Friction is a force that opposes motion between any surfaces that are touching. Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. ... Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy

8 0
3 years ago
Read 2 more answers
fie abc un triunghi cu masura unghiului a de 90 de grade ab este 6 cm bc=10 si ca=8 calculati;sin b; tg b; sin c; tg c; cos b; c
lions [1.4K]
SinB = cosC = AC / BC = 8/10 = 4/5;
tgB = ctg C = AC/AB = 8/6 = 4/3, because we use T. Pitagora for calculating AB;
sinC = cosB = AB/ BC = 6/10 = 3/5;
tgC = ctgB = AB/ AC = 6/8 = 3/4.

6 0
3 years ago
Other questions:
  • A store allows customers to fill their own bags of candy. Terri decides she only wants jelly beans and chocolate drops. Jelly be
    6·1 answer
  • How to you combine like terms
    12·2 answers
  • PLEASE HELP<br><br><br> 8 less than 3 times a number is 7 what is the number
    6·1 answer
  • The pine scrub rail trial is 72 miles long. if the willy-nilly bike club rides 18 miles per day, how many days will it take them
    12·1 answer
  • What is the length of the longest side of a triangle that has vertices at (7, 6), (7, 1), and (-5, 6)?
    13·2 answers
  • 7th grade help me plzz
    14·1 answer
  • PLEASE HELP ASAP THANKS
    13·1 answer
  • Atlanta and Los Angeles have two of the top ten busiest airports in the world. In 2011, Atlanta had approximately 92.365 million
    6·1 answer
  • Graph the Quadratic equation y=x2+2x−3
    5·2 answers
  • Can someone please help me
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!