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
n200080 [17]
3 years ago
14

marcos tiene un plan de teléfono de $35.00 por cada mes , el costo de cada minuto es de $ 0.20 ,en un mes el recibo le llego de

$228.50 ¿cuantos minutos uso en el mes?
Mathematics
1 answer:
Sedaia [141]3 years ago
5 0
967 min con 50 seg ojala este correcto.
You might be interested in
Including 16% sales tax an item cost 348. What is the original price?
const2013 [10]

Answer:

292.32

Step-by-step explanation:

16% = 0.16

348 × 0.16 = 55.68

348 - 55.68 = 292.32

7 0
3 years ago
How many ways can we pick three distinct integers from {1, 2, ..., 15} such that their sum is divisible by 3?
gogolik [260]

Answer:

Clearly from 1 to 15 we can only have the sum 6,9,12 and 15 to be divisible by 3.

Now meaning we have 4! ( 4 factorial) which implies 4x3x2x1= 24 .

We have 24 ways to pick distinct integers that are divisible by 3.

Step-by-step explanation:

The first thing you need to do is to look for numbers that are divisible by 3. Then you take its factorial

5 0
3 years ago
Which of these inferences about the two debate teams are true? Check all that apply.
Zinaida [17]

Answer:

The 2 and 3

Step-by-step explanation:

I took the test and gave me the answer

7 0
3 years ago
Read 2 more answers
A safe has a 4- digit code and no digit can be repeated what is the probability that the code has all even digits
n200080 [17]

Answer:

Step-by-step explanation:

5 0
3 years ago
Solve the equation. And write all solutions in general form.
Amiraneli [1.4K]

Answer:

x = pi/2 + 2 pi n                            x = pi + 2 pi n   where n is an integer

x = 5pi /3 + 2 pi n                      

Step-by-step explanation:

8 cos^2 x + 4 cos x-4 = 0

Divide by 4

2 cos^2 x +  cos x-1 = 0

Let u = cos x

2 u^2 +u -1 =0

Factor

(2u -1) ( u+1) = 0

Using the zero product property

2u-1 =0    u+1 =0

u = 1/2      u = -1

Substitute cosx for u

cos x = 1/2    cos x = -1

Take the inverse cos on each side

cos ^-1(cos x) = cos ^-1(1/2)   cos ^-1( cos x) =cos ^-1( -1)

x = pi/2 + 2 pi n                            x = pi + 2 pi n   where n is an integer

x = 5pi /3 + 2 pi n                      

8 0
3 years ago
Other questions:
  • How do you calculate angles on parallel lines
    9·1 answer
  • An invoice quotes a price of $620 subject to discounts of 30%,15% and 5%. What is the selling price? Round off your answer to th
    7·1 answer
  • What is the simplified Square root of 41!?!?!??
    12·1 answer
  • Here is the histogram of a data distribution. All class widths are 1.
    5·2 answers
  • Pls do #13 pls pls pls
    15·1 answer
  • Twice the sum of a number and six decreased by fifteen is the same as eighteen more than the product of five and the number. Fin
    7·1 answer
  • What is the value of 4 in the number 849,567,053
    8·2 answers
  • I need HELP!!!!!!!!!
    7·1 answer
  • For what value of X is ABCD a rectangle ? explain your answer
    11·1 answer
  • I need help on 13 The instructions are to: evaluate the following if a =6 , B=3 and c = 2.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!