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
blagie [28]
3 years ago
13

There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is 3 8 . There are 18 r

ed marbles in the bag and each is equally likely to be chosen. Work out how many marbles in total there must be.
Mathematics
1 answer:
sweet-ann [11.9K]3 years ago
8 0

Answer:

There are 48 marbles in the bag

Step-by-step explanation:

red: blue : total

3                   8

there are 18 red

18/3 = 6

Multiply everything by 6

3*6                 8*6

18                    48

There are 48 marbles in the bag

You might be interested in
A 40% antifreeze solution is to be mixed with a 70% antifreeze solution to get 240 liters of a 64% solution. How many liters of
Alexxandr [17]

Answer:

We have 40% antifreeze and 70% antifreeze and we need to make 240 liters of 64% antifreeze.

We set up 2 equations where "f" is the 40 % and "s" is the 70%

A) f + s = 240

B) .40f + .70s = (.64 * 240) (or 153.6)

To solve both equations we multiply A) by -.40

A) -.40 f  - .40 s = -96.00   then we add this to B)

B) .40f + .70s = 153.60

.30s = 57.6

s = 192

f = 48

48 liters of 40% = 19.20 liters of antifreeze

192 liters of  70% = 134.40 liters of antifreeze

That equals 153.60 liters of antifreeze in a TOTAL liquid amount of 240 liters.

Double Check

153.60 / 240 = 64% antifreeze.

Step-by-step explanation:

6 0
3 years ago
The school cafeteria seats 250 students. 203 students are already seated. Write and sole an inequality that represents the addit
Nitella [24]

Answer:

An equation that represents the given situation is 203+x=250 and the additional number of students that can be seated is 47

Step-by-step explanation:

Number of students already seated in school cafeteria = 203

Let x be the additional number of students that can be seated

So, Total number of seats available in school cafeteria = 203+x

We are given that the school cafeteria seats 250 students

So, 203+x=250

\Rightarrow x=250-203

\Rightarrow x=47

Hence an equation that represents the given situation is 203+x=250 and the additional number of students that can be seated is 47

6 0
3 years ago
Preston drew a blueprint of an additional room he is planning to add to his house. On the blueprint, 2 centimeters is equal to 3
Sidana [21]
1 cm = 1.5 feet
9 feet / 1.5 = 6 cm    12 feet / 1.5 = 8 cm    B. 6 cm by 8 cm
8 0
3 years ago
Read 2 more answers
Graph the inequality 4x -2y < 8
iris [78.8K]

Mine is pretty rough but hope it helps look at the attached image.

8 0
3 years ago
Mr. Rojas spent d dollars to go on vacation. He bought a plane ticket for $250 and stayed in a hotel for 5 nights. If the cost o
Nataly [62]

Answer:

d-250x5=i dont know

Step-by-step explanation:

8 0
2 years ago
Other questions:
  • The local newspaper has letters to the editor for 40 people if this is the number represents 5% of all the newspaper readers how
    7·2 answers
  • −1.5(4−n)+2.8−1.5(4−n)+2.8 simplified is
    5·1 answer
  • Colton has n nickels and d dimes. He has no more than $2 worth of coins altogether. Write this situation as an inequality.
    8·1 answer
  • A piece of paper in the shape of an equilateral triangle with side length 3 and a circular piece of paper with radius 1 are glue
    15·2 answers
  • Find the value of each variable that ensures that each equilateral is a parallelogram
    13·1 answer
  • PLLLLEASE HELP <br><br> 50 points
    13·2 answers
  • In one month, Jillian made 36 local phone calls and 20 long distance calls.
    6·1 answer
  • 1 Write the slope-intercept form of the equation of the line. -​
    14·1 answer
  • ) The monthly income of A is double than that of B and the m is treble than that of c. if the total income of three persons is R
    12·1 answer
  • A rope was 14.35 inches long. Megean cut the rope into 7 pieces of equal length. What was the length of each piece of rope in in
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!