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
KATRIN_1 [288]
3 years ago
10

I don't understand how to do this. Can someone help?

Mathematics
1 answer:
miskamm [114]3 years ago
3 0
Time used for the call to Zurich: ($5-$1.25)/$0.25=15 minutes
15minutes+3minutes=18minutes
Time used for the call to London: ($7.25-$1.25)/$0.25=24 minutes
24minutes+3minutes=27minutes
Difference between the two calls:27-18=9minutes
You might be interested in
A raft and a motorboat simultaneously leave from the same point and move down the river. After 2 hours the motorboat turns aroun
lesya692 [45]

Answer:

2 hours

Step-by-step explanation:

Let x mph be the speed of motorboat in still water and y mph be the speed of current.

A raft and a motorboat simultaneously leave from the same point and move down the river, then speeds down the river are:

        motorboat =  x + y mph

        raft = y mph

In two hours they will cover:

        motorboat = 2(x+y) miles

        raft = 2y miles

After 2 hours the motorboat turns around and starts moving towards the raft (against the current), so its speed is now x - y mph.

Let t be the time they move towards each other. In t hours, they cover

        motorboat = t(x - y) miles

        raft = ty miles

The distance from the starting point to the turning point is the same as the sum of the distances the raft covers and the motorboat covers after turning around, so

2(x+y)=2y+t(x-y)+ty \\ \\2x+2y=2y+tx-ty+ty\\ \\2x=tx\\ \\t=2\ hours

6 0
3 years ago
Which is a proportional relationship<br> y=x+1<br> y=3x+3<br> y=4x<br> y=8+x
yulyashka [42]

Answer:

4=4x

Step-by-step explanation:

the formula y=mx+b

corresponds to y=slope+y intercept

all proportional relationships start on the origin so the y-intercept is always 0

the fact that the equation y = 4x doesn't have an intercept shows its proportional this can go with any similar equation like y = 4.5x

8 0
2 years ago
Wendy jarred 8 liters of jam after 2 days. How many days does Wendy need to spend making jam if she wants to jar 32 liters of ja
Jlenok [28]

Answer:

8 days

Step-by-step explanation:

it takes her two days to make 8 liters so for every 8 liters you add on two more days. 8:2, 16:4, 24:6, 32:8

4 0
3 years ago
Maria-Jose is a math tutor. She charges a one-time introduction fee of $25.00 and the cost of the tutoring sessions is shown bel
Feliz [49]

Answer:

y=6x+25

Step-by-step explanation:

y will be the whole cost. 6 is how many sessions you have and x is the cost of each of those sessions. The one time introduction fee is 25. you would add 25 plus 6 times the cost of sessions (x) and you would get your answer (y).

3 0
3 years ago
How many multiples of 7 are less than 1270 and more than 950
Goryan [66]

Answer:

45 i think its right or 46

7 0
3 years ago
Other questions:
  • (24,215-23,500)/[3678/sqrt(85)]
    15·1 answer
  • Find an equation in x and y that has the same graph as the polar equation. <br> r sin(θ) = −2
    8·1 answer
  • What is the sum of the polynomials?
    14·1 answer
  • How do you calculate ?x?=24
    15·1 answer
  • What effect does doubling the radius of a cylinder have on the volume of the cylinder?
    7·1 answer
  • Crystal randomly selects a card from the list and
    8·1 answer
  • Kareem ate an apple that had a mass of about 140 ?<br><br> A)grams<br><br> B)kilograms
    6·1 answer
  • Domain: -5 -4 -3.-20. 1. 2. 3. 4. 5)
    7·1 answer
  • Cullumber Company, a machinery dealer, leased a machine to Dexter Corporation on January 1, 2020. The lease is for an 8-year per
    13·1 answer
  • 4x=12+12<br>Find the value of x​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!