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
beks73 [17]
3 years ago
8

a jar contains red and blue marbles the probability that a randomly-selected marble is red is 1/4 if 27 of the marbles are blue

how many marbles are in the jar
Mathematics
1 answer:
Marina86 [1]3 years ago
3 0
Hi!
So if you know the probability of choosing a red marble in that given jar is 1/4, you can then figure out what the probability of not choosing a red marble, or choosing a blue marble, is. That probability would be called the complement of 1/4, and what would be added to it to make 1. In this case, it would be 3/4.
Since 27 of the marbles are blue, and the chance of drawing a blue marble is 3/4, we can then say 27 = 3/4 of the jar. Now the easier way is to find what 1/4 then equals and add it up. Since 1/4 is 1/3 of 3/4, we can see what 1/3 of 27 is to find what 1/4 of the marbles in the jar is.
1/3 • 27 = 9.
So if we add 9 and 27 together, that's the total number of marbles in the jar. 27 + 9 = 36.
There are 36 marbles in the jar.
You might be interested in
At the bake sale the students earned $48.76. If there were 3 students how much did each student earn
stepladder [879]
48.76 divided by 3 equals 16.25
6 0
3 years ago
Read 2 more answers
Find the 22nd term. 3, 7.5, 12, 16.5
yaroslaw [1]

Answer:

either or super sore

Step-by-step explanation:

4 0
3 years ago
Georgia knows that in the relationship between two
marysya [2.9K]

Answer:

Maybe try doing it earlier, don’t try doing things last minute it will put too much stress. Thank you :)

Step-by-step explanation:

5 0
3 years ago
Determine the quadratic function of 2,-3/5
Tanzania [10]

I guess you mean that the zeroes are 2 and -3/5.

In factor form the function  could be

f(x) = (x - 2)(3x + 5)

expanding we get

f(x) = 3x^2 -x - 10  

6 0
3 years ago
1/2 the weight of a brick +20= 1/3 the weight of a brick +30. What is the weight of the brick?
prisoha [69]
1/2x+20=1/3x+30
Subtract 20 on both sides
1/2x=1/3x+10
Subtract 1/3x on both sides
1/6x=10
Multiply by 6 on both sides
X=60
6 0
3 years ago
Other questions:
  • (x^ 3 + y ^3) divided by (x - y)
    10·1 answer
  • -8g-13=43<br><br>84-x=27<br><br>how do I solve these?
    6·1 answer
  • How do you do a 3-step equation?
    14·1 answer
  • Can someone answer these please.
    9·1 answer
  • How many times does 21 go into 221 evenly
    7·1 answer
  • 123 times 60 __________ equals 1,480 <br> A. <br> True<br> B. <br> False
    9·1 answer
  • Macy has a new beaded necklace. 26% of the 50 beads on her necklace are blue. How many
    11·1 answer
  • HELP PLEASE NEED IT RN!
    14·1 answer
  • What are the x-values of the quadratic equation (x-2)^2-9=0?
    6·1 answer
  • Consider this expression.(The square root of a to the power of 3 - 7 )+ lbl When a = 2 and b = -4, the value of the expression i
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!