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Monica [59]
3 years ago
5

A bag consist of 4 blue marbles and 6 red marbles. Three marbles are randomly selected from the bag with replacement after each

selection. Twenty five trials are conducted and the results are given by the table. Compare the theoretical and experimental probabilities for the compound event: red marble, red marble, red marble.FIRST ANSWER WILL GET BRAINLIEST!

Mathematics
2 answers:
pantera1 [17]3 years ago
8 0
Im p sure its d
hope this helps
Ugo [173]3 years ago
5 0

Answer:

its C: The event occurred 0.14 less than theoretically expected

Step-by-step explanation:

i just took the test on USA Testprep its right

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Period of f(t)= -2cos(3t)
ivann1987 [24]

Answer:

Period=2pi/3

Step-by-step explanation:

8 0
2 years ago
Write the first five terms of a geometric sequence in which the sixth term is 64.
azamat

Answer:

1st term : 2

2nd term : 4

3rd term: 8

4th term : 16

5th term : 32

Step-by-step explanation:

8 0
2 years ago
What is the solution for x in the equation -4+5x-7=10+3x-2x in a fraction
Alex

Answer:

x = 21/4

Step-by-step explanation:

re-arrange the equation

-4+5x-7-3x = 10-2x (move 3x to the other side)

-4+5x-7-3x+2x = 10 (move 2x to the other side)

5x-7-3x+2x = 10+4 (move 4 to the other side)

5x-3x+2x = 10+4+7 (move 7 to the other side)

4x = 21 (add up both sides)

x = 21/4 (divide both sides by 4

5 0
3 years ago
A ladder is leaning against a building so that the distance from the ground to the top of the latter is 1 foot less than the len
masha68 [24]

Answer:

25\text{ feet}

Step-by-step explanation:

The ladder, ground, and building form a right triangle where the vertical distance between the top of the ladder and the bottom of the ground is one leg, the horizontal distance between the bottom of the ladder and the building is another leg, and the length of the ladder is the hypotenuse.

For any right triangle, the Pythagorean Theorem states that the sum of the squares of both legs is equal to the hypotenuse squared (a^2+b^2=c^2), where c is the hypotenuse.

Let the length of the ladder be \ell (hypotenuse of right triangle). The distance between the top of the ladder and the ground (vertical distance) can be represented as \ell -1.

From the Pythagorean Theorem, we then have:

7^2+(\ell-1)^2=\ell^2

Expand using (a-b)^2=a^2-2ab+b^2:

49+\ell^2-2\ell+1=\ell^2

Subtract \ell from both sides and add 2\ell to both sides:

49+1=2\ell

Combine like terms:

50=2\ell, \\2\ell =50

Divide both sides by 2:

\ell=\frac{50}{2}=\boxed{25\text{ feet}}

Therefore, the length of the ladder is 25 feet.

4 0
3 years ago
X2 + 10x – 11 = (x - 1)<br> x2 + 12x + 11
lora16 [44]

Answer:

x²+12x+11=(3x+21)

Step-by-step explanation:

x²+10x–11=(x–1) (+2x)

x²+12x–11=(3x–1) (+22)

x²+12x+11=(3x+21)

Hope that's what you're looking for

5 0
3 years ago
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