answer.
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
zhannawk [14.2K]
2 years ago
9

A phone company charges 50 cents per minute during the daytime and 10 cents per minute at night.

Mathematics
1 answer:
Gala2k [10]2 years ago
4 0

Answer:

You could talk on the phone for 200 minutes at night, or 40 minutes during the day.

For every 5 minutes you reduced your night time talking, you could talk during the day for 1 minute.

Step-by-step explanation:

0.50d + 0.10n < $20

0.50d < $20 --> d < 40 minutes

0.10n < $20 --> n < 200 minutes

You might be interested in
After extensive measurements of the time necessary to complete the first homework assignment, a teacher determines that there is
MaRussiya [10]

Answer: -1.55

Step-by-step explanation:

Given : Mean : \mu=100

Standard deviation : \sigma=20

Sample size : n=60

Sample mean : \overline{x}=96

The test statistic for the population mean is given by :-

z=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

\Rightarrow\ z=\dfrac{96-100}{\dfrac{20}{\sqrt{60}}}=-1.54919333848\approx-1.55

Hence, the value of z statistic = -1.55

4 0
2 years ago
Henry is at the end of a three-year lease for his car. his leasing company says that his car is currently worth $12,780, a 72% r
ahrayia [7]
The residual value or some may term it the salvage value is the value of an item after a certain period of time. Let x be the original msrp (manufacturer suggested retail price), we can calculate for the salvage value as follows:
                                               12,780 = 0.72x
The value of x from the equation generated above is 17,750. Therefore, the original msrp is equal to $17,750.
8 0
2 years ago
Read 2 more answers
Paul bought 9 total shirts for a total of $72. Tee shirts cost $10 and long sleeves shirts cost
luda_lava [24]
This is the whole problem : Paul bought 9 total shirts for a total of $72. Tee shirts cost $10 and long sleeve shirts cost $7. How many of each type of shirt did he buy?
7 0
2 years ago
The area of a trapezoid is 144 square inches. if the height is 12 inches, find the length of the median.
deff fn [24]

Answer: 12 inches

Step-by-step explanation: In this problem, since we're asked to find the length of the median, let's use our formula for the area of a trapezoid that involves the median which is shown below.

Area = median · height

We know that the area is 144 and the height is 9 so we can set up the equation 144 = M · 12. Now to solve for <em>m</em>, we divide both sides of the equation by 12 and we find that 12 = M.

So the length of the median of the trapezoid is 12 inches.

6 0
2 years ago
John wants to buy a notebook for $5 and pens that cost $3 each. All prices include sales tax. He has $35. Write and solve an ine
yaroslaw [1]

Answer:

only 10

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • You and a friend buy two fruit smoothies and leave a tip. You split the total and your half comes to $3.60. What percent tip (in
    8·1 answer
  • How many cups of sorbet are used in 8 cups of punch?
    7·1 answer
  • At a golf ball factory, 60 golf balls were inspected and 48 of them passed inspection. Out of 2,500 golf balls made at the facto
    6·2 answers
  • Moises is determining the solution to the system of equations that is show below. Equation representing line A: mc018-1.jpg Poin
    5·1 answer
  • What is the percent of increase in the rent for Bob's apartment if it went from $560 to $616?
    5·2 answers
  • Find a right triangle that has legs with your irrational Lengths and a hypotenuse with a rational Length
    8·1 answer
  • Pepper Jackie has 7.5 bags of mulch to cover 12 yds to the second power of edible flower beds. If she wants to distribute the mu
    5·1 answer
  • Jason has five coins in his pocket: a penny, a nickel, a dime, a quarter, and a half-dollar. How many different sums of money ca
    7·1 answer
  • Carmen wants to join a gym. Gym A costs $26.76 plus an additional $4 for each visit.
    13·1 answer
  • What happens to the value of the expression \dfrac{10}{d} d 10 ​ start fraction, 10, divided by, d, end fraction as ddd increase
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!