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
Brilliant_brown [7]
3 years ago
13

Two numbers are of the ratio 3:5. If their difference is 18, find the numbers.​

Mathematics
1 answer:
Sergio039 [100]3 years ago
4 0

x \div y = 3 \div 5  \\ it \: means  =  \\ 3y = 5x \\ x - y = 18 \\

To solve we multiply the last equation by 5 and we get the following:

5x-5y=90

But 5x=3y and we replace it in this equation:

3y-5y=90

-2y=90

y=-45

and x-(-45)=18 , x+45=18

x=-27

You might be interested in
The amount of time it takes Ariana to do a math problem is continuous and uniformly distributed between 38 seconds and 79 second
solniwko [45]

Answer:

29.27% probability that it takes Ariana between 58 and 70 seconds to do a math problem

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X between c and d, d being greater than c, is given by the following formula:

P(c \leq X \leq d) = \frac{d-c}{b-a}

Uniformly distributed between 38 seconds and 79 seconds.

This means that a = 38, b = 79

What is the probability that it takes Ariana between 58 and 70 seconds to do a math problem

c = 58, d = 70

P(58 \leq X \leq 70) = \frac{70 - 58}{79 - 38} = 0.2927

29.27% probability that it takes Ariana between 58 and 70 seconds to do a math problem

4 0
3 years ago
If the start time is 8:34 amd the elapsed timne is 3 hours and 18 minutes what is the end time
mr_godi [17]
Forget the '34' part of 8:34 and the '18' minutes from 3 hours and 18 minutes for now.

Just add 3 hours on to 8, to get 11. Then, bring back the 34 and 18 and add them together. 34 + 12 = 52. Now put that 52 on the end of the 11, and you get 11:52 as the end time. 
3 0
3 years ago
Read 2 more answers
4. The Blackhawk Eagles scored 4 points more than the Lane Vikings. The
konstantin123 [22]

Answer:

Lane Viking's Score is 17

Black Eagles's Score  is 21

Step-by-step explanation:

Let Lane Viking's Score be x and Black Eagles's Score be y.

Black Eagles's Score = 4+ Lane Viking's Score

so y = 4 + x    (Equation 1)

Total Score = 38

Black Eagles's Score + Lane Viking's Score = 38

so y + x =38     (Equation 2)

Putting y's value from Equation 1 in Equation 2

4 + x + x = 38

2x = 38-4

x=34/2

x=17

Putting value of x in Equation 1

y = 4 + 17

y = 21

7 0
3 years ago
Martin was making play dough. He added 3/4 cup of flour to the bowl. Then he added another 3/8 cup. Is the total amount of flour
Sergio039 [100]

Answer:

It's greater then one cup

Step-by-step explanation:

Hope it helps :)

Have a good day/night

Brainliest pls?

6 0
3 years ago
Read 2 more answers
Name an altitude for ABC
valina [46]
Altitude is another word for height so it would be the first answer
8 0
3 years ago
Read 2 more answers
Other questions:
  • n triangle ABC, m∠BAC = 50°. If m∠ACB = 30°, then the triangle is triangle. If m∠ABC = 40°, then the triangle is triangle. If tr
    7·1 answer
  • Find the area and circumference of 4
    11·1 answer
  • Twice a number is equal to 35 more than seven times the number. Find the number
    14·1 answer
  • In the function f(x) = 5(x2 − 4x + ____) + 15, what number belongs in the blank to complete the square?
    13·2 answers
  • Suppose lines a and b shown above are rotated in some way. Choose all the statements that WOULD result from line a and b being r
    10·1 answer
  • Write the expression
    7·1 answer
  • How to solve word problems wit fractions
    7·1 answer
  • BRAINLIEST FOR THE CORRECT AWNSER!! PLEASE PUT THE LETTER AWNSER AND EXPLAIN DO NOT LIE THANK YOU The owner of a bike shop sells
    9·1 answer
  • Eastridge High School’s Student Government Association is holding a raffle to raise money for a local food pantry. They have spe
    6·1 answer
  • What is the probability of flipping 4 coins and having exactly three of them land on tails?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!