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
sasho [114]
3 years ago
8

A plane can fly 520 miles in the same time as it takes a car to go 200 miles. If the car travels 80 mph slower than the plane, f

ind the speed of the plane.
Mathematics
1 answer:
telo118 [61]3 years ago
8 0

Answer: the speed of the plane is 130 mph

Step-by-step explanation:

Let x represent the speed of the plane. If the car travels 80 mph slower than the plane, then the speed of the car would be (x - 80) mph.

Time = Distance/speed

plane can fly 520 miles in the same time as it takes a car to go 200 miles. This means that the time it takes the plane to fly 520 miles is

520/x

Also, the time it takes the car to drive 200 miles is

200/(x - 80)

Since the time is the same, it means that

520/x = 200/(x - 80)

Cross multiplying, it becomes

520(x - 80) = 200 × x

520x - 41600 = 200x

520x - 200x = 41600

320x = 41600

x = 41600/320

x = 130 mph

You might be interested in
Look at this expression.
Soloha48 [4]

Answer:

c 18

Step-by-step explanation:

Idid thsi in Kahn academy and got it correctly

4 0
2 years ago
Ms. Pearson kept track of student absences versus final average grades in her math dass for one semester, The
sammy [17]

The correct statement about the data collected by Ms. Pearson is that there is no association between a student's absences and the final average grades.

<h3>When do variables have a linear relationship?</h3>

The equation that represents a linear relationship is: a + bx

Where x represents the rate of increase. Thus, for linear equations, the functiion increases by a constant term.

Looking at the table, the average final grade does not increase by a constant term.

To learn more about linear functions, please check: brainly.com/question/26434260

6 0
2 years ago
PLEASE HELPPP!!!!
dybincka [34]

Answer:

A. The point (0,0) shows that the cost is $0 for 0 kg of cashews.

C. The point (2,60) shows that it cost $60 for 2 kg of cashews.

B. The constant of proportionality for this graph is 30.

Step-by-step explanation:

D is wrong

7 0
3 years ago
Is the following correspondence a function
GenaCL600 [577]
No, because element b has 2 correspondents.
7 0
3 years ago
Read 2 more answers
2х - 12 = 24
Eduardwww [97]

Answer:

x=18 y=25

Step-by-step explanation:

1)2x18=36-12=24

2)3x25=75-15-60

3 0
3 years ago
Other questions:
  • the manufacturer of an Airport baggage conveyor recommends a slope of no more than .25. If the baggage conveyor and the figure b
    10·1 answer
  • Use Stokes' Theorem to evaluate S curl F · dS. F(x, y, z) = x2z2i + y2z2j + xyzk, S is the part of the paraboloid z = x2 + y2 th
    6·1 answer
  • Factor the expression using the GCF 75m+85
    7·2 answers
  • 11. The total number of months m that it takes to produce p tennis rackets
    7·1 answer
  • Find the value of Q3 for the following data set. 3 5 6 6 8 9 9 9 10 10 11
    10·2 answers
  • sean sold 4 more boxes of candy for the school fundraiser than Chris. The sum of the boxes that they sold was 22
    7·2 answers
  • Line A passes through the points (4.3) and (-7, 12). Line B is parallel to Line A. What is the slope of Line B?
    13·1 answer
  • A computer store buys a computer system at a cost of ​$370.80. The selling price was first at $618 ​, but then the store adverti
    12·2 answers
  • Rs 600 will gave Rs 90 simple interest at 5 % per annum. ​
    7·1 answer
  • What percent of 80 is 32? Enter your answer in the box. <br> (Middle School)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!