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
Semenov [28]
3 years ago
13

At Billy's school, 80 students come to school by bicycle or by car. Together, the vehicles they arrive to school in have 270 whe

els. How many of each are used
Mathematics
1 answer:
Anna35 [415]3 years ago
6 0

Answer:

x = number of bicycles = 35

y = number of cars = 55

Step-by-step explanation:

Let

x = number of bicycles

y = number of cars

x + y = 80 (1)

2x + 4y = 270 (2)

From (1)

x = 80 - y

Substitute x = 80 - y into (2)

2x + 4y = 270 (2)

2(80 - y) + 4y = 270

160 - 2y + 4y = 270

- 2y + 4y = 270 - 160

2y = 110

y = 110/2

y = 55

Substitute y = 55 into (1)

x + y = 80 (1)

x + 55 = 80

x = 80 - 55

x = 35

x = number of bicycles = 35

y = number of cars = 55

You might be interested in
Aaron’s mother purchases a new computer for $1750. If she claims a linear depreciation (loss of value) on the computer at a rate
kirill [66]

After 8 years the value of the computer to be $0 if the Aaron’s mother purchases a new computer for $1750.

<h3>What is a sequence?</h3>

It is defined as the systematic way of representing the data that follows a certain rule of arithmetic.

We have:

Aaron’s mother purchases a new computer for $1750. If she claims a linear depreciation (loss of value) on the computer at a rate of $250 per year.

The above problem can be solved using concept of arithmetic sequence

The starting value = $1750

After one year = 1750 - 250 = $1500

After second year = 1500 - 250 = $1250

Common difference = 1500 - 1750 = -250

a(n) = 1750 + (n - 1)(-250)

a(n) = 0  (final value is zero given)

0 = 1750 + (n - 1)(-250)

n - 1 = 7

n = 8 years

Thus, after 8 years the value of the computer to be $0 if the Aaron’s mother purchases a new computer for $1750.

Learn more about the sequence here:

brainly.com/question/21961097

#SPJ1

4 0
2 years ago
Select the correct answer. If the function 5x + y = 1 has the domain (-2, 1, 6), then what is the corresponding range? OA. {-9,
Leokris [45]

Answer:

D) {11,-4,-29}

Step-by-step explanation:

rewrite the equation as y= -5x+1 and plug in -2,1 and 6 to get y

-5*-2+1=11

-5*1+1=-4

-5*6+1=-29

3 0
3 years ago
Please help taking a test and can’t figure it out!!!
guajiro [1.7K]
I’m pretty sure the answer would be A
3 0
3 years ago
What are the zeros of this function?
MrMuchimi
Es esta la correcta

8 0
2 years ago
w Wo Shoes With so much to explore in every city, Debbie needs to purchase a new pair of comfy and supportive walking shoes The
MArishka [77]

Answer:

$47.988-$47.99

Step-by-step explanation:

20/100=0.20

39.99x0.20=7.998

39.99+7.998=47.988

6 0
2 years ago
Other questions:
  • What's the answer ????
    9·1 answer
  • Dianna has 4 quarters, 3 dimes, and 3 nickels in her purse. She reaches into her purse and randomly grabs two coins, one at a ti
    13·2 answers
  • I need help ASAP please. I need the answer
    11·1 answer
  • What is 0.28 written as a fraction in simplest form?
    7·1 answer
  • it takes perry 11 minutes to sweep a porch. Darryl can sweep the same porch in 10 minutes. Find how long it would take them if t
    9·2 answers
  • Help!! I’ll give brainliest! &lt;3
    5·1 answer
  • Convert angle radians to degrees
    8·1 answer
  • Need help ASAP !!!<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B88%20%5Ctimes%2011%20%5Ctimes%202%20%5Ctimes%204%7D%20"
    12·2 answers
  • (HELP ASAP!!)
    6·1 answer
  • 80 PTS!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!