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
Zigmanuir [339]
3 years ago
13

A local cell phone company offers two different calling plans. In the first plan, you pay a monthly fee of $30 and $.35 per minu

te. In the second plan, yoy pay a monthly fee of $99 and $.05 per minute. Write a system of equations showing the two calling plans.
Mathematics
1 answer:
Svetach [21]3 years ago
4 0
A local cell phone company offers two different calling plans. In the first plan, you pay a monthly fee of $30 and $.35 per minute. In the second plan you pay a monthly fee of $99 and $.05 per minute. 
<span>a. write a system of equations showing the two calling plans. </span>
<span>scheme 1: monthly charges: 30 + 0.35m .....m = total minutes during the month </span>
<span>scheme 2: monthly charges: 99 + 0.05m </span>

<span>b. when is it better to use the first plan </span>
<span>When you make few calls, only where unavoidable. </span>

<span>c. when is it better to use the second plan. </span>
<span>When you make a lot of call, literally "always on hello!" </span>

<span>d. how much does it cost when the calling plans are equal? 
Question is unclear for me . </span>
You might be interested in
The space shuttle flight control system called PASS (Primary Avionics Software Set) uses four independent computers working in p
tigry1 [53]

Answer:

f_X(k)=\binom{4}{k}0.003^k0.997^{4-k}

Step-by-step explanation:

Recall that a <em>probability mass function</em> defined on a discrete random variable X is just a function that gives the probability that the random variable equals a certain value k

f_X(k)=P(X=k)

In this case we have the event  

“The computer will ask for a roll to the left when a roll to the right is appropriate” with a probability of 0.003.

Then we have 2 possible events, either the computer is right or not.

Since we have 4 computers in parallel, the situation could be modeled with a binomial distribution and the probability mass function

f_X(k)=\binom{4}{k}0.003^k0.997^{4-k}

This gives the probability that k computers are wrong at the same time.

6 0
3 years ago
Express the measurement 4.29478416 kg with 8, 6, 4, and 2 significant figures
ira [324]

Significant figures refers to digits within a number which must be included in other depict correct quantity of the figure.

  • 4.29478416 = 4.2947842 ( 8 significant figures)
  • 4.29478416 = 4.29478 (6 significant figures)
  • 4.29478416 = 4.295 ( 4 significant figures)
  • 4.29478416 = 4.3 (2 significant figures)

To round a number to a certain number of significant figures,

  • Only leading 0 which comes before the decimal Point are regarded as insignificant.
  • Once the number of significant figures have been identified, the next number after this is either rounded up to 1 and added to the last value(if number is ≥5) or rounded to 0 (if number is less than 5)

Learn. More : brainly.com/question/13386983?referrer=searchResults

3 0
2 years ago
At Least One Defective iPhone It has been reported that 20% of iPhones manufactured by Foxconn for a product launch did not meet
bija089 [108]
We can use the binomial theorem to find the probability that 0 out of the 15 samples will be defective, given that 20% are defective.
P(0/15) = (15C0) (0.2)^0 (1 - 0.2)^15 = (1)(1)(0.8)^15 = 0.0352
Then the probability that at least 1 is defective is equal to 1 - 0.0352 = 0.9648. This means there is a 96.48% chance that at least 1 of the 15 samples will be found defective. This is probably sufficient, though it depends on her significance level. If the usual 95% is used, then this is enough.
7 0
3 years ago
Which equation and solution can be used to solve this problem?
maks197457 [2]

Answer:

D

Step-by-step explanation:

We need to convert these words into mathematical expressions:

- "Twenty-two less than a number"; "less than" indicates that we need to use subtraction, and since it's "twenty-two less than", we have: -22. Let's say the "number" is q. Then, we have -22 of q, which is q - 22.

- "is twenty-four"; "is" in math always means "equal", so we need an equal sign with 24 next to it: = 24

Put this altogether:

q - 22 = 24

The answer is thus D.

4 0
3 years ago
Read 2 more answers
PLEASE HELP PLEASE PLEASE!!!!!!!!
nadya68 [22]

Answer:

SRO and QRO

Step-by-step explanation:

Hope this helps!

7 0
2 years ago
Other questions:
  • HEEEELP!!!!! 30 POINTS! Conjecture: Points A, B, and C are noncollinear. Is this conjecture true? No, points A and B lie on the
    8·1 answer
  • Find an equation for this line.
    10·1 answer
  • Monica need to but soup. the store has- 5 cans for $10.00. is she buys just one can of soup, the cost is $2.20 Which is the bett
    15·2 answers
  • Here goes problem 4 i need help
    7·2 answers
  • Determine if they are similar, congruent or neither
    5·1 answer
  • Solve<br><br> 1/5 (x+3)=−(2x+3)
    8·1 answer
  • Lung cancer may only be caused by first hand smoke. True False
    5·2 answers
  • At an ice cream social 56 people ordered chocolate ice cream while 32 people ordered vanilla ice cream. What is the ratio of the
    11·1 answer
  • Leo weighs 10 pounds of dog
    7·1 answer
  • Work out the area of the shaded shape.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!