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
meriva
3 years ago
12

A tire shop had to fill 2 1 ⁄2 tires with air. It took a small air compressor 2 1 ⁄2 seconds to fill them up. How long would it

take to fill 8 tires?
Mathematics
1 answer:
Brums [2.3K]3 years ago
6 0

Let 2_1/2 = 5/2.

Let t = time to fill 8 tires

(5/2)/8 = (5/2)/t

8(5/2) = (5/2)t

20 = (5/2)t

20 ÷ 5/2 = t

20 • 2/5 = t

8 seconds = t

Done.

You might be interested in
Solve the following simultaneous equations : with the help of steps<br>1. x + 2y = 1, 3x - y = 17​
IRISSAK [1]

Answer:

x = 5, y = -2

Step-by-step explanation:

<u>Given equations:</u>

  • x + 2y = 1
  • 3x - y = 17​

<u>From the first equation we get:</u>

  • x = 1 -2y

<u>Substitute x in the second equation, find y:</u>

  • 3x - y = 17
  • 3*(1-2y) - y = 17
  • 3 - 6y - y = 17
  • -7y = 17 - 3
  • -7y = 14
  • y = -14/7
  • y = -2

<u>Find x:</u>

  • x = 1 - 2y
  • x = 1 - 2*(-2)
  • x = 1 + 4
  • x = 5
6 0
3 years ago
PLEASE HELP<br>Find the solution of this system of equations <br> -5x=-21+6y <br> -5x+y=-84
NeTakaya
-5x - 6y = -21
5x - y =. 84

-7y = 63

y= -9

-5x = -21 - 54

-5x = -75

x = 15
4 0
3 years ago
Which relationships describe angles 1 and 2?
NikAS [45]

Supplementary angles.

This is because supplementary angles are two angles that add up to 180 degrees, and these two angles would add up to 180 degrees.

5 0
2 years ago
At the beginning of the school year, 70 students signed up for music lessons. Students could choose drums, guitar, piano, or vio
Ksivusya [100]
By process of elimination its A
7 0
3 years ago
Read 2 more answers
Can anyone rewrite the quadratic function in standard form?
ycow [4]

Answer:

So we first open multiply the parenthesis by 9. 9x+5 is what it is. Now we need to simply it even more with the 2 parenthesis

(9x+5)(x+1) = 9x^2+9x+5x+5 = 9x^2+14x+5

<h2><u>Answer: 9x^2+14x+5</u></h2>

3 0
3 years ago
Other questions:
  • Circle towns limit form a perfectly circular shape that has a population of 20000 in the population density of 480 people per sq
    14·1 answer
  • A system has 4 components. We want to find the probability that in some implementation of this system components #1 and #2 fail,
    8·1 answer
  • What is the approximate circumference of a circle with a radius of 18 feet?
    15·2 answers
  • Mr.Smith bought 5 movie tickets. The total cost was $38.75. How much did each ticket cost?
    15·2 answers
  • Tanner collected 360 cans and bottles while fundraising for his baseball team. This was 40% of what Reggie collected. How many c
    15·2 answers
  • football practice is 3 hours long and is split equally into two parts basic warm up Princeton football how much time is spent pr
    5·1 answer
  • Please help and thank you
    5·2 answers
  • Plz Help your fav. Marshmello i wasn' t,,,,, xx born yesterday.
    13·2 answers
  • Colbalt-60 has half-life of about 5 years, How many grams of a 300 g sample will remain after 20 years?
    7·2 answers
  • Please Help! Don't mind horrible drawing ;)​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!