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
Leno4ka [110]
3 years ago
5

For his long distance phone service, Keith pays a $3 monthly fee plus 11 cents per minute. Last month, Keith's long distance bil

l was $13.67. For how many
minutes was Keith billed?
Mathematics
1 answer:
Allushta [10]3 years ago
3 0

The number of minutes for which Keith was billed = 97

Step-by-step explanation:

Step 1:

It is given that Keith pays a fixed fee of 3$ a month and 11 cents per minute  for the number of minutes used.

Total cost = Fixed cost + Per minute cost

If x represents the number of minutes consumed in a month then we can compute the total cost using the below equation:

Total cost = 3$ + 0.11 * x

Step 2:

The total cost is 13.67$

Substituting in the equation we get

13.67 = 3 + 0.11 * x

x = 10.67 / 0.11 = 97 minutes

Step 3:

Answer:

The number of minutes for which Keith was billed = 97

You might be interested in
If the value of third order determinant is 11. Then what is the value of the determinant formed by its cofactors.
nordsb [41]

Answer:

146.41

Step-by-step explanation:

third order determinant = determinant of 3×3 matrix A

given ∣A∣=11

det (cofactor matrix of A) =set (transpare of cofactor amtrix of A) (transpare does not change the det)

=det(adjacent of A)

{det (cofactor matrix of A)}  ^2  = {det (adjacent of A)} ^2

 

(Using for an n×n det (cofactor matrix of A)=det (A)^n−1 )

we get

det (cofactor matrix of A)^2  = {det(A)  ^3−1 }^2

 

=(11)^2×2  = 11^4

 =146.41

5 0
3 years ago
According to The Wedding Report, Inc., the mean cost for a wedding in the United States is $28732 (as of November 2008). Suppose
Stella [2.4K]

Answer:

Following are the solution to the given points:

Step-by-step explanation:

X = \text{cost of wedding}\sim \text{Normal}\ (\mu = 28732, \sigma= 1500)\\\\

For point a:

Probability\ = 0.00000359\\\\ \text{(Using Excel function:} =NORMDIST(22000,28732,1500,1)).

For point b:

Probability \ = 0.014678\\\\\text{(Using Excel function:} =1-NORMDIST(32000,28732,1500,1))\\\\

For point c:

Probability\ = 0.794614436 \\\\

\text{(Using Excel function:} \\=NORMDIST (30000,28732,1500,1)-NORMDIST(25000,28732,1500,1))\\\\

For point d:

Q_1 = 27720.26537 \\\\\text{(Using Excel function:} =NORMINV(0.25,28732,1500)) \\\\Q_3 = 29743.73463 \\\\\text{(Using Excel function:} =NORMINV(0.75,28732,1500)).

For point e:

IQR = Q_3 - Q_1 = 29743.73463 - 27720.26537 = 2023.469251.

For point f:

Top\  10\% = 30654.32735 \\\\\text{(Using Excel function:} =NORMINV(0.9,28732,1500)).

5 0
3 years ago
P(A) = ? <br> Explain how you got the answer as well.
Leto [7]

Answer:

0.5

Step-by-step explanation:

we see that A is 1 of 2 choices, so theoretically, P(A) = 1/2 = 0.5

5 0
3 years ago
If you sleep 7 hours every night how many hours are you AWAKE in a year? Tips: There are 24 hours in a day. There are 365 days i
artcher [175]
6,205 hours you are awake in a year
5 0
3 years ago
Read 2 more answers
The non-negative root of a number is called
zlopas [31]
A non-negative root of a number is called Square Root
4 0
3 years ago
Read 2 more answers
Other questions:
  • Write 1432 using Roman numerals
    11·2 answers
  • Captain Sparrow and his pirate crew dug up several gold coins. They are dividing the coins amongst themselves so that each perso
    6·1 answer
  • The ratio of boys to girls in the gym class at a local middle school is 3:2. what percent of the gym class is girls
    9·1 answer
  • What fraction below is NOT equivalent to 1/5? *
    14·1 answer
  • Two containers, A and B begin with equal volumes of liquid.
    7·1 answer
  • What is the base?<br> Area= 9/10<br> Height=3/5<br><br> PLEASE HELP ME!!
    6·1 answer
  • Solve this equation for x. Round your answer to the nearest hundredth. <br>1 = In(x + 7) ​
    6·2 answers
  • Anyone know the answer to this
    10·2 answers
  • What is the best estimate of the area of the lake pictured on the grid if each square has a side length of 400 meters?
    10·1 answer
  • Jackson places the mirror on the ground so that he is able to look at the mirror and see the top of the mountain.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!