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
makkiz [27]
4 years ago
13

A bag contains green marbles and blue marbles,

Mathematics
1 answer:
dexar [7]4 years ago
8 0

There are 13 green marbles in the bag.

Step-by-step explanation:

Total marbles = 18

Let,

Green marbles = x

Blue marbles = y

According to given statement;

The number of green marbles is 2 less  than 3 times the number of blue marbles.

x = 3y-2    Eqn 1

x+y=18      Eqn 2

Putting value of x from Eqn 1 in Eqn 2;

(3y-2)+y=18\\3y-2+y=18\\4y=18+2\\4y=20

Dividing both sides by 4

\frac{4y}{4}=\frac{20}{4}\\y=5

Putting y=5 in Eqn 1

x=3(5)-2\\x=15-2\\x=13

There are 13 green marbles in the bag.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/8054589
  • brainly.com/question/7932185

#LearnwithBrainly

You might be interested in
Footwear manufacturing is projected to decrease output by 5% from 2009 to 2019. If footwear manufacturing had 1.5 million dollar
makkiz [27]

Answer:

Output 2019 = 1.425 million dollar

Step-by-step explanation:

Given:

Output 2009 = 1.5 million dollar

Projected decrease output = 5%

Find:

Output 2019

Computation:

Output 2019 = Output 2009[100% - Projected decrease output]

Output 2019 = 1.5 [100% - 5%]

Output 2019 = 1.425 million dollar

4 0
3 years ago
A herd of 52 horses has 12 white and some black horses. What is the ratio of white to black horses​
Kryger [21]

Answer:

If there are 12 white horses in 5 a herd of 52 horses, there will be 40 black horses if there aren't any other color horses.

The ratio will be 40 : 12

To simplify, it will be 10 : 3

5 0
3 years ago
Read 2 more answers
NFL Pre-Season Teams in the National Football League (NFL) in the US play four pre-season games each year before the regular sea
Mazyrski [523]

Answer:

H0 : ρ = 0

H1 : ρ ≠ 0

Test statistic = 1.197

Pvalue = 0.2335

There is no correlation between the two variables

Step-by-step explanation:

The null and alternative hypothesis :

H0 : No correlation exist,

H1 : Correlation exist

H0 : ρ = 0

H1 : ρ ≠ 0

Test statistic, T = r / √(1 - r²) / (n - 2)

T = 0.067 / √(1 - 0.067²) / (320 - 2)

T = 0.067 / √(0.995511 / 318)

T = 0.067 / 0.0559512

T = 1.197

The Pvalue obtained from the Rscore, at df = 320 - 2 = 318 is 0.2335

α = 5% = 0.05

The Pvalue > α ; we fail to reject the null and conclude that, there is no correlation between the two variables.

6 0
3 years ago
Pls help if you only know the correct answer! Thanks!
andrey2020 [161]

Answer:

A-1.5

B-(-1/3)

C-(-4/3)

I have seen the title of this question before, so I know how to do it.

Hope can help you.

3 0
3 years ago
Read 2 more answers
Which statement correctly describes the lines shown on the graph?
maksim [4K]

Answer:

D

Step-by-step explanation:

Only the green and pink lines represent a proportional relationship.

5 0
4 years ago
Other questions:
  • PLZ HELP WILL GIVE BRAINLIEST
    13·1 answer
  • How could I solve y= 2x^2 + 16x - 66 <br><br> By using quadratic formula?
    12·2 answers
  • Where is the function constant? Choose all answers that are correct. A.from x = −5 to x = −2 B.from x = −2 to x = 1 C.from x = 1
    13·1 answer
  • HELP ME PLEASE!
    11·1 answer
  • . What was the median age of a person in attendance?
    7·1 answer
  • Jack was 11 years older than Percilla together their age is totaled 155 years what were their ages
    10·2 answers
  • I need help a math problems. D+12=2
    15·2 answers
  • A ladder is resting against a wall. The top of the ladder touches the wall at a height of 12 m. Find the distance from the wall
    12·1 answer
  • Help me out plz it’s 14
    15·2 answers
  • A, B, C, or D?? Pls help
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!