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
Thepotemich [5.8K]
3 years ago
8

The 2th term of The A.P is 7 and 9th term is 28, Find The comon difference and The first term.

Mathematics
1 answer:
Radda [10]3 years ago
8 0

Answer:

difference = 3, first term = 4

Step-by-step explanation:

given, a2 = 7

a9 = 28

wkt, a2 = a + d = 7

<u>a9 = a + 8d</u><u> </u><u>=</u><u> </u><u>28</u>

- 7d = - 21

therefore d = 3

and wkt, d = a2 - a

a = 7 - 3 = 4

HOPE THIS HELPS

You might be interested in
The number of bacteria growing in an incubation culture increases with time according to n left parenthesis t right parenthesis
Anon25 [30]
For this case we have the following function:
 n (t) = 2400 * (5) ^ t 
 For n (t) = 60000 we have:
 60000 = 2400 * (5) ^ t
 We clear the value of t.
 For this we use the logarithm:
 (5) ^ t = 60000/2400
 log5 ((5) ^ t) = log5 (60000/2400)
 t = log5 (60000/2400)
 t = 2 days
 Answer:
 
the number of bacteria in the culture will be 60 comma 000 after:
 
t = 2 days
5 0
3 years ago
The table shows the location of four cities relative to sea level.
ycow [4]

Answer:its citc (C)

Step-by-step explanation:

7 0
2 years ago
The area of the shaded circle below is 78.5 square inches. The area of the large circle is 314 square inches.
umka2103 [35]
From the given description it seems that the small shaded circle lies within the larger circle as shown in image below:

The probability that a point choosen at random lies within the shaded area = Area of shaded region / Total area of the bigger cricle

So,
Probability = 78.5/314 = 0.25

Thus there is 0.25 or 25% probability that the point chosen at random will lie inside the shaded region. 

6 0
3 years ago
Read 2 more answers
{n|n &gt; -8} draw in number line
zaharov [31]

Step-by-step explanation:

please mark me as brainlest

7 0
3 years ago
Please! I'm being timed!
Kipish [7]
A should be the correct answer. Let me know if I’m right!
3 0
3 years ago
Other questions:
  • Which of the following is an equation of the line that passes through the point (−1, 4) and is perpendicular to the equation of
    6·1 answer
  • How to solve this problem
    7·1 answer
  • PLEASE HELP I REALLY NEED IT
    12·1 answer
  • Find f(3) given that f(3) = -x^4 + 3x^3 + x^2 - 8x - 16.
    8·1 answer
  • Pleaseeee help me! Options are A, C, B, and D
    7·1 answer
  • Respond using complete sentences and math language. Mike told his friend Jacky that 16 + 5 * 2 - 3 = 23. Jacky disagrees, she sa
    9·2 answers
  • Please help.. The math department is putting together an order for new calculators. The students are asked what model and color
    6·2 answers
  • Hellllllllllllllllllllppppppppppppppppppppp
    5·1 answer
  • Geometry image attached will give brainliest
    8·1 answer
  • Which one is it? I need help
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!