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
Reil [10]
3 years ago
10

the cost per minute of a conference phone call, originally $2.80, increased by 20%. What is the new price?

Mathematics
2 answers:
erica [24]3 years ago
4 0
Y=2.80(1.20)^1
=$3.36
Tanzania [10]3 years ago
3 0
My answer is $2.24 dollars.
You might be interested in
The 5th term in a geometric sequence is 40. The 7th term is 10. What is (are) the possible value(s) of the 4th term?
Lena [83]

Answer:

possible values of 4th term is 80 & - 80

Step-by-step explanation:

The general term of a geometric series is given by

a(n)=ar^{n-1}

Where a(n) is the nth term, r is the common ratio (a term divided by the term before it) and n is the number of term

  • Given, 5th term is 40, we can write:

ar^{5-1}=40\\ar^4=40

  • Given, 7th term is 10, we can write:

ar^{7-1}=10\\ar^6=10

We can solve for a in the first equation as:

ar^4=40\\a=\frac{40}{r^4}

<em>Now we can plug this into a of the 2nd equation:</em>

<em>ar^6=10\\(\frac{40}{r^4})r^6=10\\40r^2=10\\r^2=\frac{10}{40}\\r^2=\frac{1}{4}\\r=+-\sqrt{\frac{1}{4}} \\r=\frac{1}{2},-\frac{1}{2}</em>

<em />

<em>Let's solve for a:</em>

<em>a=\frac{40}{r^4}\\a=\frac{40}{(\frac{1}{2})^4}\\a=640</em>

<em />

Now, using the general formula of a term, we know that 4th term is:

4th term = ar^3

<u>Plugging in a = 640 and r = 1/2 and -1/2 respectively, we get 2 possible values of 4th term as:</u>

ar^3\\1.(640)(\frac{1}{2})^3=80\\2.(640)(-\frac{1}{2})^3=-80

possible values of 4th term is 80 & - 80

3 0
3 years ago
Suppose the x-intercept of f(x) is (p,0) and the x-intercept of g(x) is (q,0). What is the value of p+q?
Mice21 [21]

Answer:

The answer is C

Step-by-step explanation

3 0
2 years ago
If two triangles are congruent, which of the following statements must be true? Check all that apply.
melomori [17]

When figures are congruent, they have the same shape and size. All measures of one of the figures are identical to the corresponding measures of the other.

Of these statements, the following must be true ...

  • B. The corresponding sides of the triangles are congruent
  • C. The corresponding angles of the triangles are congruent
  • D. The triangles have the same shape and size
5 0
3 years ago
Read 2 more answers
Find the standard deviation for the set of data {27, 14, 7, 21, 19, 23, 26, 30, 4}
antoniya [11.8K]

4 , 7 , 14 , 19 , 21 , 23 , 23 , 26 , 27 , 30

Step-by-step explanation:

HOPE IT'S HELP ;)

7 0
2 years ago
Please help i really need this
lorasvet [3.4K]

Answer:

ok put me brainliest  please

its 215$

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • A train travels 226 miles from Washington, D.C.,to New York city in about 2 hours and 30 minute. What is the average speed of th
    15·1 answer
  • Solve the equation of y. <br> 0.5 = 0.4y - 0.25x
    5·2 answers
  • What is the quotient of 35 divided by 7
    13·1 answer
  • The storage box shown has these dimensions.
    13·2 answers
  • Como podria la logica contribuir con la convivencia social
    5·1 answer
  • Debbie counts the videos and DVDs she has and places them into categories
    7·1 answer
  • a botanist estimated that a maple tree grows 0.24 ft per month. Write a reduced fraction that is equivalent to this amount
    7·1 answer
  • Mrs. Buchanan is planning marching routines for the school band. The band has 36 members. Band
    9·2 answers
  • Pls help (brainliest!)
    9·1 answer
  • Convert 3 m 40 cm to metre​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!