please need help fast
Answer:
6/10
Step-by-step explanation:
The answer is A
14 black balls and 6 white balls are placed in an urn. Two balls are then drawn in succession. What is the probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball?a) 0.3333
b) 0.2381
c) 0.0952
d) 0.2143
e) 0.3111
Answer:
[tex]Probability = 0.30[/tex]
Step-by-step explanation:
Given
Represent Black with B and White with W
[tex]B = 14[/tex]
[tex]W = 6[/tex]
Required
Probability of the second selection being white
This means that: The first selection could be white or black but the second must be white.
This probability would be represented as thus:
[tex]Probability = (P(W)\ and\ P(W))\ or\ (P(B)\ and\ P(W))[/tex]
And it is calculated as:
[tex]Probability = (\frac{n(W)}{Total} * \frac{n(W)-1}{Total - 1}) + (\frac{n(B)}{Total} * \frac{n(W)}{Total - 1})[/tex]
Notice that, the second selection has total -1 has its denominator. This is so because, the first selection was made without replacement
So, the formula becomes
[tex]Probability = (\frac{6}{20} * \frac{6-1}{20- 1}) + (\frac{14}{20} * \frac{6}{20- 1})[/tex]
[tex]Probability = (\frac{6}{20} * \frac{5}{19}) + (\frac{14}{20} * \frac{6}{19})[/tex]
[tex]Probability = \frac{30}{380}+ \frac{84}{380}[/tex]
[tex]Probability = \frac{30 + 84}{380}[/tex]
[tex]Probability = \frac{114}{380}[/tex]
[tex]Probability = 0.30[/tex]
The probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball is 0.33.
Given :
14 black balls and 6 white balls are placed in an urn. Two balls are then drawn in succession.The formula given below can be used in order to determine the probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball.
[tex]\rm P = \left(\dfrac{n(W)}{Total}\times \dfrac{n(W)-1}{Total-1}\right)+ \left(\dfrac{n(B)}{Total}\times \dfrac{n(W)}{Total-1}\right)[/tex]
Now, substitute the values of known terms in the above formula.
[tex]\rm P = \left(\dfrac{6}{20}\times \dfrac{6-1}{20-1}\right)+ \left(\dfrac{14}{20}\times \dfrac{6}{20-1}\right)[/tex]
Simplify the above expression.
[tex]\rm P = \dfrac{30}{380}+\dfrac{84}{380}[/tex]
[tex]\rm P =\dfrac{114}{380}[/tex]
P = 0.33
So, the probability that the second ball drawn is a white ball if the second ball is drawn without replacing the first ball is 0.33.
Therefore, the correct option is a).
For more information, refer to the link given below:
https://brainly.com/question/23044118
What are three different things you know about squares? List them.
Answer:
1) There are 4 sides in a square where all the sides are equal
2) Squares have 90 degree angles!
a nd three) it has 4 equal angles
Answer:
- all four sides are equal
- 4 right angle corners (90 degree corners)
- its also a rectangle with equal sides and a rhombus with right angles.
Step-by-step explanation:
A company has developed a training procedure to improve scores on the SAT. Following the training, 100 high school students take the SAT. The average math score is 517, with s = 90. Assuming µ = 500 for the math SAT, test the null hypothesis. Did training significantly improve scores (α = .05, directional)?
Answer:
The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance
Null hypothesis is accepted at 0.05 level of significance
A company has developed a training procedure is significantly improve scores
Step-by-step explanation:
Step(i):-
Given sample mean (x⁻ ) = 517
sample standard deviation (s) =90
Mean of the Population (μ) =500
Null Hypothesis :- H₀ : (μ) =500
Alternative Hypothesis : H₁ : μ ≠ 500
Step(ii):-
Test statistic
[tex]t = \frac{x^{-} -mean}{\frac{s}{\sqrt{n} } }[/tex]
[tex]t = \frac{517 -500}{\frac{90}{\sqrt{100} } }[/tex]
t = 1.717
Level of significance
∝ = 0.05
t₀.₀₅ = 1.6604
The calculated t-test = 1.717 < 1.6604 at 0.05 level of significance
Conclusion:-
Null hypothesis is accepted at 0.05 level of significance
A company has developed a training procedure is significantly improve scores
Please I need some answers
What is 6x3-69+12x4-7x(9x3)+7-1?
Answer:
44
Step-by-step explanation:
6 times 3 is 18 so.. 18 minus 69 would be -36 plus 12 is a positive 1 times 14 would be 14 minus 7 would be 7 7 times 27 would 38 plus 7 would be 45 minus one would be 44
Answer:
-186
Step-by-step explanation:
6x3-69+12x4-7(27)+7-1
18-69+48-189+7-1
-51+48-189+7-1
-3-189+7-1
-192+7-1
-185-1
-186
Consider the line y=7x-3.
Find the equation of the line that is parallel to this line and passes through the point (8, 5).
Find the equation of the line that is perpendicular to this line and passes through the point (8, 5).
Answer:
1st question: y=7x-51
Step-by-step explanation:
So for the first question: *aHem*
You rewrite the equation to be 5=7*8+b. The reason why is because since it will be parellel it will have the same slope, and those coordinates that you gave me I just plugged into equation.
Solve equation: 7*8=56 so now it's 5=56+b. Subtract 56 from both sides. -51=b
Rewrite again into y=7x-51. The reason why is because b means y intercept and you are looking for where to start (y-intercept) and keeping the same slope. Parallel means never touching.
What is 2.27 kg in pounds
Answer:
5.004493
Step-by-step explanation:
Answer:
2.27 kg is about 5 pounds.
Step-by-step explanation:
1 kilogram = 2.2 pounds
So, we have to multiply 2.2 by the amount of kilograms, which in this case, is 2.27.
2.27 x 2.2 = 4.994 or 5 when rounded to the nearest whole number.
Therefore, 2.27 kg = 5 lbs
Hope this helps! :)
what is the value of x when 3x < -2x + 15
Answer:
X < 3
Step-by-step explanation:
To solve the equation 3x < -2x+15
the steps are as follow:
+ 2x to both sides
Result: 5x < 15
Then divide by 5 to both sides to get x alone.
Final Product:
x < 3
PLEASE PLEASE HELP I NEED IT ASAP
Answer:
c = 122
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesGeometry
Definition of a Line: A line is 180°Step-by-step explanation:
Step 1: Set up equation
(c - 3)° + 61° = 180°
Step 2: Solve for c
Combine like terms: c + 58 = 180Subtract 58 on both sides: c = 122And we have our final answer!
5w 2-6 + 11 help pls
Answer:
5
2
−
6
+
1
1
5
w
2
−
6
+
11
5w2−6+11
Simplify
1
Add the numbers
5
2
−
6
+
1
1
5
w
2
−
6
+
11
5w2−6+11
5
2
+
5
Step-by-step explanation:
I NEED HELP ASAP IT IS DUE IN 5 minutes
3/4 times x + 7 = -5
Answer:
-16
Step-by-step explanation:
(3/4)x+7=-5
(3/4)x=-12
x=-12(4/3)
x=-16
what do I do?????????
A fact family is made up of three numbers. Just as in any family the members, or numbers, are related and there are always at least four math facts to be made with them. Take, for example, these members of a fact family: 6, 4, and 10.
In the family 6, 4, and 10 they are related because you can add two of the numbers to get the last number.
6 + 4 = 10
You can also switch the first two numbers, using the commutative property of addition, and still get the same answer.
4 + 6 = 10
Just find how they can relate! Hope it helps!
Answer:
3 times 6 = 18 2 times 5 = 10
6 times 8 = 18 5 times 2 = 10
18 divided by 6 = 3 10 divided by 2 = 5
18 divided by 3 = 6 10 divided by 5 = 2
7/4725 please help meeeeeeee
Suppose there is a 1.2 Fahrenheit drop in temperature for every thousand feet that an airplane climbs into the sky if the temperature on the ground is 64.7 Fahrenheit what will the temperature be when the plane reaches an altitude of 5000 feet
9514 1404 393
Answer:
58.7 °F
Step-by-step explanation:
At 5000 feet, the airplane is 5 times 1000 feet above the ground, so the temperature will have dropped 5 times 1.2 °F.
64.7 - 5×1.2 = 64.7 -6.0 = 58.7
At 5000 feet, the temperature is 58.7 °F.
What is the y-intercept of y = –3x + 6?
-2.45 + 5.5x -4.3x = 1.3 +0.7x
Answer:
The answer would be x=7.5
Step-by-step explanation:
Answer:
x=7.5
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−2.45+5.5x−4.3x=1.3+0.7x
−2.45+5.5x+−4.3x=1.3+0.7x
Step 2: Combine Like Terms
(5.5x+−4.3x)+(−2.45)=0.7x+1.3
1.2x+−2.45=0.7x+1.3
1.2x−2.45=0.7x+1.3
Step 3: Subtract 0.7x from both sides.
1.2x−2.45−0.7x=0.7x+1.3−0.7x
0.5x−2.45=1.3
Step 4: Add 2.45 to both sides.
0.5x−2.45+2.45=1.3+2.45
0.5x=3.75
Step 5: Divide both sides by 0.5.
0.5x/0.5=3.75/0.5
so
x = 7.5
Are the lines parallel, perpendicular, or neither? 2x-3y=4 and 6y=4x+1
Answer:
parallel
Step-by-step explanation:
Perform the indicated operation
Answer:
(g o h)(t) = -4t² - 16t + 3
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesAlgebra I
Composition of functionsStep-by-step explanation:
Step 1: Define
g(t) = -4t + 3
h(t) = -t² + 4t
(g o h)(t) = g(h(t))
Step 2: Find
Substitute: (g o h)(t) = -4(t² + 4t) + 3Distribute -4: (g o h)(t) = -4t² - 16t + 3And we have our final answer!
1. Three times a number added to four
times a number, subtract five.
Answer:
45
Step-by-step explanation:
Answer:
3x 4x and -5 so
3x+4x-5 is the answer
can someone help meh? ( last slide )
Help! - 20 POINTS!!!
Thanks!
Answer:
b
Step-by-step explanation:
first to help me with this gets the brainliest
Answer: -26 i think srry if im wrong
Step-by-step explanation:
2x−3, find h(6)h(6).
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
Step-by-step explanation:
Answer:
654
Step-by-step explanation:
What value of g makes the equation 32 + 3g = 4g + 20.5 true
Answer:
g= 11.5
Step-by-step explanation:
32+3g = 4g+20.5
11.5+3g = 4g
11.5 = 1g
11.5 = g
Find the volume of a rectangle prism with length 4 m width 6 mans height 11 m.
Answer:
264 m^3
Step-by-step explanation:
4 m * 6 m * 11 m = 264 m^3
Answer:
264
Step-by-step explanation:
Google!
Hope this helps. Good luck!
All whole numbers are integers ( True or false)?
Answer:
false i think sry if im wrong
Step-by-step explanation:
Simplify the following expression:
-13^2=?
Answer: -13 x -13 = 169
Step-by-step explanation: you have to multiply -13 two times and a negative time a negative equals a positive
Professor Gersch grades his exams and sees that the grades are normally distributed with a mean of 77 and a standard deviation of 6.Based on the Empirical Rule, between what two grades should you expect to find roughly the middle 95% of the distribution?a. 65 to 89b. 77 to 83c. 71 to 83d. 77 to 89e. 59 to 95
Answer:
The correct option is a. 65 to 89.
Step-by-step explanation:
According to the Empirical Rule in a normal distribution with mean µ and standard-deviation σ, nearly all the data will fall within 3 standard deviations of the mean. The empirical rule can be broken into three parts:
• 68% data falls within 1 standard deviation of the mean. That is P (µ-σ≤X≤ µ+σ) = 0.68.
• 95% data falls within 2 standard deviations of the mean. That is P (µ-2σ≤X≤ µ+2σ) = 0.95.
• 99.7% data falls within 3 standard deviations of the mean. That is P (µ-3σ≤X≤ µ+3σ) = 0.997.
The information provided is:
[tex]\mu=77\\\sigma = 6[/tex]
Use the Empirical rule to compute the middle 95% of the distribution as follows:
[tex]P(\mu-2\sigma\leq X\leq \mu+2\sigma)=0.95\\\\\mu-2\sigma=77-(2\times 6)=65\\\\\mu+2\sigma=77+(2\times 6)=89\\\\\Rightarrow P(65\leq X\leq 89)=0.95[/tex]
Thus, the correct option is a. 65 to 89.
Which is greater 0.35. Or 2/5
Answer:
2/5
Step-by-step explanation:
2 divided by 5 is 0.4 which is greater than .35
Answer:
0.35 < 2 /5
Step-by-step explanation:
Simplifying then comparing both terms 0.35 and 2/ 5 .
0.35 is less than 0.4 which means that the first term is less than the second term.