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
Marizza181 [45]
3 years ago
15

Find the 2nd term of an arithmetic sequence with t5 = 3 and t7 = 7?

Mathematics
1 answer:
svetlana [45]3 years ago
6 0
Let a be the first term and d be the common difference

t5 = 3 = a + 4d
t7 = 7 = a + 6d

a + 6d - a - 4d = 7 - 3
2d = 4
d = 2

Sub d = 2,
3 = a + 4(2)
a = -5

t2 = a + d
t2 = -5 + 2
t2 = -3
You might be interested in
Find the value of x in the isosceles triangle shown below.​
dybincka [34]

USING PYTHAGORAS THEORAM,

x²+3²= 5²

x²+9= 25

x²= 25-9 = 16

x= √16

x= 4

OPTION D

6 0
3 years ago
How does the graph of f(x)=x² compare with the graph of f(x)=|x²|
gladu [14]

Answer:

They are the same.

Step-by-step explanation:

The graphs are same because <em>x</em>² is always positive, so the absolute value part is redundant.

3 0
3 years ago
Describe how you can use the make a ten strategy to find the sum 7+9
kondor19780726 [428]
I don't quite understand the ten strategy, or what EXACTLY you're asking. But, what you can do is when you add a one digit number plus a nine, just change the nine to a ten and subtract one. It is very easy. So, 7+10 equals 17, subtract one and you get 16 which is 7+9. It is always one less than anything plus 10.
3 0
4 years ago
In two or more complete sentences, define the key features of the graph below and explain how to write its equation using functi
Korolek [52]
The graph has a vertex at (3, -2). It extends upward from there linearly at a slope of -1 to the left and 1 to the right. It is the graph of an absolute value function. If we assume it keeps extending upwards the domain is all real numbers. (which is what i would assume even though there's no arrows it doesn't have decipherable endpoints). The range is y ≥ -2 with y -intercept (0,1), and x-intercepts: (5,0) & (1,0).

To write the equation for this function, I would acknowledge that it is the translation of the graph of the standard absolute value function: f(x) = |x| ; right 3 and down 2. Which would be to subtract 3 from x and subtract 2 from the end.
 f(x) = |x - 3| - 2 
5 0
4 years ago
Which equation is the most accurate line of best fit for this scatter plot?
bearhunter [10]
The answer is D because it is a negative association
4 0
3 years ago
Other questions:
  • Which are vertical angles
    13·2 answers
  • NEED ANSWER DESPERATELY
    14·2 answers
  • Hey can you please help me posted picture of question
    15·2 answers
  • Kyle ran the 200 yard dash in 40 seconds. How many feet can Kyle run each second?
    13·2 answers
  • This is simplifying algebraic expressions, i want to know how you do this and can you show the steps so i understand better? Tha
    15·1 answer
  • What value should you divide the numerator and denominator by in order to simplify the fraction 3/18?
    8·1 answer
  • Decribe the counter clockwise rotation that maps angles
    7·1 answer
  • Does anybody know this ???
    15·2 answers
  • What is the answer??​
    11·1 answer
  • 3. Use the following diagram to solve for x.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!