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
Amiraneli [1.4K]
3 years ago
10

Trudy bought a $20 prepaid long distance phone card. for every minute that she talks, $0.25 is deducted from her card. The funct

ion f(m)=20-0.25m represents the amount of money f(m) she has left after talking m minutes.FInd the zero and explain what it means in the context of the situation.
Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
3 0

Answer:

Step-by-step explanation:

Given the function f(m)=20-0.25m to represent the amount of money f(m) she has left after talking m minutes, the zero of the equation can be gotten by setting f(m) to 0

f(m)=20-0.25m

0 =20-0.25m

-20 = -0.25m

m = -20/-0.25

m = 80

Hence Trudy will have talked for 80minutes if she has no money left

You might be interested in
A pharmaceutical company receives large shipments of aspirin tablets. The acceptance sampling plan is to randomly select and tes
DerKrebs [107]

Answer:

a) The probability that this whole shipment will be​ accepted is 30%.

b) Many of the shipments with this rate of defective aspirin tablets will be rejected.

Step-by-step explanation:

We have a shipment of 3000 aspirin tablets, with a 5% rate of defects.

We select a sample of size 48 and test for defectives.

If more than one aspirin is defective, the batch is rejected.

The amount of defective aspirin tablets X can be modeled as a binomial distribution random variable, with p=0.55 and n=48

We have to calculate the probabilities that X is equal or less than 1: P(X≤1).

P(X\leq1)=P(X=0)+P(X=1)\\\\\\P(0)=\binom{48}{0}(0.05)^0(0.95)^{48}=1*1*0.0853=0.0853\\\\\\P(1)=\binom{48}{1}(0.05)^1(0.95)^{47}=48*0.05*0.0897=0.2154\\\\\\P(X\eq1)=0.0853+0.2154=0.3007

8 0
3 years ago
20 POINTS
dmitriy555 [2]

Answer:


Step-by-step explanation:

Its correct corrdenates are -8, 1  and 5, -3

6 0
3 years ago
Read 2 more answers
Triangle QRS is a right triangle.
olasank [31]

Answer:

5.3

Step-by-step explanation:

a² + b² =² c²               the Pythagorean theorem

RQ² + RS² = QS²            Solve RS

6² + RS² = 8²

RS² = 64 -36

RS² = 28

RS = √28                  28 is slightly > 25   and since  √25 =5

RS = 5.3                    actually 5.2915  to a few more significant digits

5 0
3 years ago
Please i need help its for a grade
horsena [70]
The answer is 25 and make sure it’s correct
8 0
2 years ago
The company leased two manufacturing facilities. Lease A requires 20 annual lease payments of $200,000 beginning on January 1, 2
Fed [463]

Answer:

the present value of the lease obligation for lease A will be $1,702,712.74 while the present value of lease B will be $1,764,741.73

Step-by-step explanation:

the present value of annual lease payment will be determined by discounting the total amount to be received from lease payment over years.

for lease A  , Pv =   A \fracA{1 -(1+r)^{-n} }{r}

                         =   $200,000( 1 - (1+0.1)^{20}) / 0.1 =  $1,702,712.74

for lease B , Pv =   $220,000( 1 - (1+0.1)^-{17}) / 0.1  =  $1,764,741.73

the amount to be dicloased in the balance sheet at 31 december, 2018

6 0
3 years ago
Other questions:
  • Paul took a 140 miletrip on his motorcycle. If he drove 60% of his trip on the first day,how many miles did Paul drive one day o
    11·1 answer
  • HELP FASTT
    5·2 answers
  • YOU WILL GET BRAINLIST AN 21 POINTS!!!!!!!1
    7·2 answers
  • Line segment EF has a lenth if 5 units. It is translated 5 units to the right on a coordinate plane to obtain line segment E'F'.
    13·1 answer
  • You have a rather strange die: Three faces are marked with the letter A, two faces with the letter B, and one face with the lett
    5·2 answers
  • It takes 2 hours for a boat to travel 28 miles downstream.The same boat can travel 18 miles upstream in 3 hours .Find the rate o
    6·1 answer
  • Which Number is Irrational <br> A√12<br> B√36<br> C√64<br> D√144
    6·1 answer
  • Two less than the product of nine is 12 more than the product of the number 3
    10·1 answer
  • Solve the equation: q –10 = -10
    7·2 answers
  • Maribel is taking advantage of the sale at Cassieś Cashew shoppe.she wants to figure out how much she will save on a purches of
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!