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
uranmaximum [27]
3 years ago
10

A jar contains 8 red marbles, 10 blue ones, and Red Blue Yellow 2 yellow ones. One marble is chosen at random. The color is reco

rded in the table, and then it is 14 returned to the jar. This is repeated 40 times. 19. Communicate Mathematical Ideas Use proportional reasoning to explain how you know that for each color, the theoretical and experimental probabilities are not the same.

Mathematics
1 answer:
tatuchka [14]3 years ago
8 0
There is a total of 20 marbles. The odds are that red would be pulled 16 times, blue 20 times and the yellow 4 times
You might be interested in
Write the standard form of the equation for the circle that passes through the points (2,31),(-15,14),(33,0)
stepladder [879]

Answer:

Step-by-step explanation:

Begin with the standard form of a circle as a conic:

Ax^2+Bxy+Cy^2+Dx+Ey+F=0

For a circle, A and C will be the exact same, and B will equal 0.  If B is non-zero, the equation represents a rotation of a conic, which is reserved for college-level courses.  Shortening this, then:

x^2+y^2+Dx+Ey+F=0 is good enough for us for this.  Start with the first point on the circle, (2, 31) and fill in the equation above with x and y:

2^2+31^2+2D+31E+F=0 which simplifies down to:

(1):2D+31E+F=-965

Do the same with the next point on the circle, (-15, 14):

-15^2+14^2-15D+14E+F=0 which simplifies down to:

(2):-15D+14E+F=0

Do the same with the last point, (33, 0):

33^2+0^2+33D+0E+F=0 which simplifies down to:

(3):33D+F=-1089

Now we will add (1) and (2) to get (4):

 2D + 31E + F = -965

-15D + 14E + F = -421

Multiply the top equatio by -1 to get rid of the F terms:

 -2D - 31E - F = 965

-15D + 14E + F = -421

which simplifies to

(4): -17D - 17E = 544

Now add (2) and (3) to get (5):

-15D + 14E + F = -421

33D           + F = -1089

Multiply the bottom equation by -1 to get rid of the F terms:

-15D + 14E + F = -421

-33D          - F = 1089

which simplifies to

(5): -48D + 14E = 668

Now add (4) and (5) together and eliminate the E terms:

-17D - 17E = 544

-48D + 14E = 668

In order to eliminate the E terms, multiply the top equation by 14 and the bottom equation by 17 to solve for D:

-238D - 238E = 7616

-816D + 238E = 11356

Which gives you that

D = -18

Now plug the value for D into (4) to find E:

-17(-18) - 17E = 544 and

306 - 17E = 544 and

-17E = 238 so

E = -14

Now plug the values for both D and E into (1) to find F:

2(-18) + 31(-14) + F = -965 and

-36 - 434 + F = -965 and

-470 + F = -965 so

F = -495

Now we can fill in the standard form of the conic:

x^2+y^2-18x-14y=495

but we're not done til we complete the square on both the x terms and the y terms (and I am assuming you know how to complete the square):

(x^2-18x+81)+(y^2-14y+49)=495+81+49 which simplifies to

(x-9)^2+(y-7)^2=625

The second choice down matches that equation, but the center they have there is not correct.  The center of that circle is (9, 7) and they have it as being (7, 10) with a radius of 5.  The radius is 25.  The center is wrong in the equation that represents the circle as is the radius.  Maybe let someone know that...

4 0
3 years ago
Read 2 more answers
Reid did a scientific project and studied 512 catfish, 232 bass, and 181 trout. How many fish did he study in all?
Stella [2.4K]
The answer is 925
(512 + 232 + 181) = 925
6 0
3 years ago
Read 2 more answers
Multiply<br> 3x( 4x – 3x+5)
Daniel [21]

Answer:

The answer is 3x^(2)+15x

7 0
3 years ago
Read 2 more answers
Please answer today or tomorrow. The outside temperature was 5 degrees Fahrenheit. How many degrees below the freezing point of
Arada [10]

Answer:

water freezes in 32 degrees

so 32-5=27

so it was 27 degrees bellow the freezjng point of water

5 0
2 years ago
5. Two unbiased dice are rolled. Calculate the probability that the sum of the two dice is:
IceJOKER [234]
The sample space has 36 possible pairs from 1,1 1,2 1,3 up to 6,5 and 6,6

(a). Three pairs add to 4 1,3 2,2 and 3,1 so P(4) = 3/36 = 1/12

(b). 6 pairs add to 7 so P(7) = 6/36 = 1/6

(c) 15 pairs add to less than 7 so P(<7) = 15/36 = 5/12
5 0
2 years ago
Other questions:
  • Write the percent shown by each model. Explain your reasoning.
    6·1 answer
  • Evaluate square root of 24 - x when x = 6 . Write the answer in simplified radical form.?
    13·1 answer
  • If 4 times a number is 48, what is the number?
    9·2 answers
  • The missing number in the series?
    5·1 answer
  • Employee working at Electronics store and $4560 for working eight months during the summer at the three month mark how much did
    5·1 answer
  • A force of 50 pounds acts on an object at an angle of 45 degrees. A second force of 75 pounds acts on the object at an angle of
    11·1 answer
  • At Benton Appliances, washing machines are on sale for 30% off the original price. Tammy found a coupon in the newspaper for an
    13·1 answer
  • What is the factor of X^4-14х^3+40x^2
    6·1 answer
  • A town's employment statistics show that 855 of its residents were unemployed last month. This is a decrease of 25% from the pre
    13·1 answer
  • Five cats each ate 1/4 cup of canned food . How much food did they eat altogether?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!