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
aivan3 [116]
3 years ago
15

The prices of two radios are in the ratio x:y

Mathematics
2 answers:
kobusy [5.1K]3 years ago
4 0

Answer:

<u>4:1</u>

Step-by-step explanation:

2(x+20) = 5(y+20)

2x + 40 = 5y + 100

2x - 5y = 60

1(x-5) = 5(y-5)

x - 5 = 5y - 25

x - 5y = -20

<u>x = 80</u> (solve the two equations simultaneously)

80 - 5y = -20

5y = 100

<u>y = 20 </u>

x:y = 80:20

x:y = 4:1

PolarNik [594]3 years ago
3 0

Answer:

x : y = 4 : 1

Step-by-step explanation:

(x+20) : (y+20) = 5 : 2    and   (x-5) : (y-5) = 5 : 1

When we multiply the outer and inner members we get:

2x+40 = 5y+100     and  x-5 = 5y-25

When we arrange the both equations we get:

2x-5y = 60  and x-5y = -20

When we subtract second equation from the first we get:

x = 80   Now we will replace x=80 in the second equation and get:

80-5y = -20 => -5y= -20-80 => -5y= - 100  

Now we will multiply the both sides with number (-1) and get:

5y= 100 => y= 100/5 = 20 => y=20

x : y = 80 : 20 => x : y = 4 : 1

God with you!!!


You might be interested in
I just need a little help ​
Anvisha [2.4K]

Answer:

its the second answer!

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is 3/16 of 200 written as a percentage
Georgia [21]

The expression 3/16 of 200 expression as a percentage is; 6.25%.

<h3>What is the value of 3/16 of 200 written as a percentage?</h3>

The value of the expression given in the task content can be evaluated as follows;

3/16 × 200 = 12.5

Hence, the value 12.5 expressed as a percentage of 200 is;

(12.5/200) × 100%.

= 6.25%.

Read more on percentages;

brainly.com/question/16865197

#SPJ1

7 0
2 years ago
Explain how two amounts of change can be the same but the percentage of change can be different
lys-0071 [83]

The change from 10 to 11 or from 100 to 101 is 1 in each case.

In the first case, the percentage of change is 1/10 = 10%.

In the second case, the percentage of change is 1/100 = 1%.

The percentages of change are different because the bases from which the change is measure are different.

8 0
3 years ago
During a film festival, the first film
Genrish500 [490]

Answer:

3

Step-by-step explanation:

deccweljvrl;ej e

5 0
3 years ago
I need the answer ( :
sergey [27]

Answer:(3 * h^12 *k^2)/2

Step-by-step explanation:First distribute the exponent 6 to the terms inside, so you get 3h^12 *k^6/2k^4 ,then divide k^6 by k^4 to get k^2 on top.

6 0
3 years ago
Other questions:
  • A student has an average of 78 on seven chapter tests. If the student's scores on six of the tests are 76, 74, 76, 80, 83, and 9
    15·1 answer
  • The length of the outside stage is 6 feet less than the width.if the total area of the outdoor stage is 720ft^2 what is the widt
    15·1 answer
  • Dominic is 72 inches tall and casts a 6o inch shadow his son who is standing next to him cast a 50 inch shadow how tall is his s
    13·1 answer
  • Position vs time for two runners<br><br> Runner a and runner b
    8·1 answer
  • For what value of g does the function f(g)=g2+3g equal 18
    7·2 answers
  • How many perfect cubes are there between 2 to 200 ?<br> ANSWER fast
    9·1 answer
  • You want to make bouquets of balloons. You choose 15 and 12 balloons. Every bouquet will have the same number of each color. Wha
    6·1 answer
  • What is 12% of 75? =)))
    6·2 answers
  • Polly is trying to decide which company she should use to paint her house. Practically Perfect Painting charges a one-time fee o
    6·1 answer
  • Which list shows all the factors of 16?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!