Answer:
35/132
Step-by-step explanation:
7 white pebbles, 5 black pebbles
7 + 5 = 12
12 pebbles total
First drawing:
p(white) = 7/12
Second drawing:
The white pebble was not replaced, so the total now is 11 pebbles.
p(black) = 5/11
p(white then black) = 7/12 * 5/11 = 35/132
The probability that the first one is a white pebble and the second one a black pebble is 26.51%.
What is probability?Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1. Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.
A bowl contains 7 white pebbles and 5 black pebbles. A pebble is chosen and not replaced, then another pebble is picked.
Then the probability that the first one is a white pebble and the second one a black pebble will be
Total event = 12
Number of the white pebbles = 7
Number of the black pebbles = 5
Then the probability will be
[tex]\rm P = \dfrac{7}{12} \times \dfrac{5}{11}\\\\P = \dfracd{35}{132}\\\\P = 0.2651 \ or \ 26.51\%[/tex]
More about the probability link is given below.
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Help me please show your work I’ll give brainlest.
If 30% of a number equals 8, find 90% of that number.
Answer:
8.88
Step-by-step explanation:
I believe it is 8.88 becuase this question is asking to find 90% pf that number.
What do you need to do?
you have to make a proportion.
8/x 90/ 100
You would now cross multiply. 90* x = 90x 8*100= 800
the equation you would need is 90x = 800. divide them and you get 8.88.
ROUNDED: you get 9.
I believe this is correct sorry if it was incorrect.
What’s the slope of the 2 points (-2, -1) & (3, 2)?
Explain how you get it too please.
Answer: 3/5
Step-by-step explanation: y2-y1/x-x1 is the formula for slope so you plug in. 2-(-1)=3 and 3-(-2)=5 and since you can't simplify anymore your answer is 3/5.
Which parts of Scripture best showcases the administering of the sacrament of Anointing of the Sick?
A. The Book of Exodus
B. The Gospel of Mark
C. The Psalms
D. The Book of Genesis
Answer:
A. The Book of Exodus is the best answer
I WILL GIVE BRAINLY TO CORRECT ANSWER
Answer: The claim is not valid because the average is 2
Express each rate in per unit form.
1. 360 miles on 10 gallons of gasoline
2. 120 miles in 2 hours
3. 20 ounces of pancake mix for $1.90
(whoever answers first will get a brainliest, a thanks, and a 5 star review)
It rained 4.2 inches in 12 hours. At this rate,
how much will it rain in 27 hours? Please help!!!!!!
Find the missing side length of the right triangle
using the Pythagorean Theorem or PT converse.
A) 53 cm
B) 35 cm
C) 73 cm
D) 23 cm
Answer:
a) 53
Step-by-step explanation:
28^2+45^2 is 2809
and when you square it
it equals to 53
What is the volume of this
composite solid?
Answer:
The closest I can get to is c. 200 cubit meters
Step-by-step explanation:
Its probably wrong tho- sorry T^T
could someone please help me out with this question
Answer:
55%
Step-by-step explanation:
MUTIPLE ANSWERS PEOPLE
An online pet store offers the hamster house shown in the figure below. Choose all of the expressions that could be used to find the volume of the hamster house. A solid shape is shown; two rectangular prisms are attached. The total length of the shape is 6 feet. One rectangular prism has a length of 1 foot, width of 3 feet and height of 4 feet. The second rectangular prism has a length as 6 feet, width as 3 feet and height as 2 feet. A. ( 1 × 3 × 4 ) + ( 2 × 5 × 3 ) B. ( 1 × 3 ) + ( 4 × 2 ) + ( 5 × 3 ) C. ( 1 × 3 × 2 ) + ( 6 × 3 × 2 ) D. 3 × ( 1 + 4 ) + 2 × ( 5 + 3 ) E. ( 3 × 4 ) + 1 × ( 2 × 5 ) + 3
Answer: It is E
Step-by-step explanation:
Answer:
ITS A AND C
Step-by-step explanation:
i failed the question thank you people
it showed me the correct answer
REWARDING BRAINLY FOR CORRECT ANSWER
Answer:
Mean: 58
Median: 58
Step-by-step explanation:
The mean is a type of average. It is the sum (total) of all the values in a set of data, such as numbers or measurements, divided by the number of values on the list. To find the mean, add up all the values in the set. Then divide the sum by how many values there are.The median is the middle number; found by ordering all data points and picking out the one in the middleFINDING THE MEAN:
57 + 54 + 59 + 57 + 61 + 58 + 60 = 406
406 ÷ 7 = 58
FINDING THE MEAN:
Arrange the numbers from smallest to greatest:
54, 57, 57, 58, 59, 60, 61
Find the median number:
54, 57, 57, 58, 59, 60, 61
The median is: 58
Answer: The mean is 58 and the median is 58
Step-by-step explanation:
You add up all the answers and divide by the number of answers for the mean.
For the median you put them in order from least to greatest and find the middle.
Is the following number rational or irrational?
-2π
Irrational (I think)
Answer:
irrational
Step-by-step explanation:
-2π is an irrational number because π can't be written down as a non-infinite decimal, you need an approximate value.
hope this helps!
D. What is the approximate cost of siding that will be needed to cover the outside of the
warehouse? Justify your reasoning.
1) Ms. Roth has 2 black skirts and 3 gray skirts. She chooses a skirt at random on Monday, wears it, puts
it back in the closet, and then chooses a skirt at random again on Tuesday. What is the probability that she
chooses a gray skirt two days in a row?
Answer:
I think the answer would be ⅖
4) Answer the question about the verbal situation.
A survey found that as the age of a company’s employees increased, the weight of the employees decreased.
What is the correlation?
A.) negative
B.) positive
C.) no correlation
5) Answer the question about the verbal situation.
A survey found that as the age of a company’s employees increased, the weight of the employees decreased.
What is the association?
A.) no association
B.) increasing
C.) decreasing
6) Answer the question about the verbal situation.
A survey found that as the age of a company’s employees increased, the weight of the employees decreased.
Complete the following statement:
As an employee’s weight decreases, the age of the employee is expected to ____________________.
A.) stay the same
B.) decrease
C.) increase
Answer:4.C 5.A 6.A
Step-by-step explanation: Hope it helps!!
Is 4 raised to the 2nd power equal to 2 raised to the 3rd power? Explain how you know, is it true or false.
Answer:
this is false
Step-by-step explanation:
4 raised to the second power is 16 since that would be 4 times 4.
2 raised to the third power is 8 since that would be 2 times 2 times 2.
Answer:False
Step-by-step explanation:
4 to the 2nd power is 16 or 4 x 4
2 to the 3rd power is 8 or 2 x 2 x 2 (4 x 2 = 8)
A town has 5000 residents. A survey finds that 81 residents
out of a random sample of 625 residents have red hair. The margin of
error for the survey is 4%. Find the interval in which the total number
of residents with red hair is most likely to lie.
The range from 63 to 99 is where the overall population of people with red hair is most likely to fall in the interval.
To solve:
The margin of error is equal to z (p (p - 1) / n).
4% is the error margin, We may therefore change the values to:
0.04 = z ×√ (1 - 81/625) / 625)
Then, using a standard normal table, we determine the z-value for 95%, which is around 1.96.
0.04 = 1.96 × √(81/625) × (1 - 81/625) / 625)
When we solve for (1 - 81/625)/625", we get a value of around 0.0098.
Calculations for the range are now being achieved:
81 - (0.0098 5000) = 63
81 + (0.0098 5000) = 99
Therefore, the range of residents with red hair that contains the greatest likelihood of lying is from 63 to 99.
For more Questions on interval
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The interval in which the total number of residents with red hair is most likely to lie is approximately between 545 and 745.
To find the interval in which the total number of residents with red hair is most likely to lie, we can calculate the confidence interval based on the survey results and the margin of error.
The margin of error is given as 4%, which means we have a 96% confidence level (100% - 4%). This corresponds to a z-score of approximately 1.96 for a standard normal distribution.
First, we calculate the standard error using the formula:
Standard Error = sqrt((p * (1 - p)) / n),
where p is the proportion of red-haired residents in the sample (81/625) and n is the sample size (625).
Standard Error = sqrt((81/625) * (1 - 81/625) / 625) ≈ 0.0179.
Next, we can calculate the margin of error by multiplying the standard error by the z-score:
Margin of Error = 1.96 * 0.0179 ≈ 0.035.
Now, we can calculate the lower and upper bounds of the confidence interval by subtracting and adding the margin of error, respectively:
Lower bound = (81/625) - 0.035 ≈ 0.109.
Upper bound = (81/625) + 0.035 ≈ 0.149.
To find the range or interval, we can multiply the lower and upper bounds by the total number of residents (5000):
Lower bound (rounded) = 0.109 * 5000 ≈ 545.
Upper bound (rounded) = 0.149 * 5000 ≈ 745.
Therefore, the interval in which the total number of residents with red hair is most likely to lie is approximately between 545 and 745.
To know more about survey here
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A two-digit number is written at random. The probability that the number will be odd is . The probability that the number will be larger than 75 is . The probability that the number will be a multiple of 5 is . The probability that the number is even and less than 40 is .
Will give brainliest for both answers
1) 4[tex]\\c^{2}[/tex][tex]s^{12}[/tex]
2)729[tex]r^{18}[/tex]
SOMEONE HELP ASAPPPP PLEASEEE,PLEASE EXPLAIN HOW U GOT YOUR ANSWER, I NEED AN EXPLANATION IN ORDER TO COMPLETE THIS! NO LINKS OR YOU WILL BE REPORTED, I WILL GIVE BRAINLIEST!!!!! I NEED THE ANSWER TODAY THIS ASSIGNMENT IS DUE TODAY
Answer:
180 degree rotation
Step-by-step explanation:
according to the picture, we can see the wheel made half of a full rotation before it stopped. a full rotation of a circle is 360 degrees, so the car made a rotation of half of 360, which is 180 degrees.
let's check our work!
a full ride on a ferris wheel is two full rotations, which is 720 degrees. Maria rode for 1/4 of a turn which we solved for 180 degrees.
180 x 4 = 720 degrees.
our answer is correct
If y represents a student's age, which inequality shows that you must be older than 14 to try out for the basketball team?
Inequality shows that you must be older than 14 to try out for the basketball team is y > 14
What is an inequality?An inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions. It is used most often to compare two numbers on the number line by their size.
According to the question
y represents a student's age
Inequality shows that you must be older than 14 to try out for the basketball team.
⇒ y > 14
y represents age.
Find out more information about inequality here
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What should go in each blank? The choices are either true, false, true but misleading, or cannot tell.
Answer:
You have all of the correct answers
Step-by-step explanation:
i'm not completely sure but i think you do.
A circle has a radius of 3 feet. Use 3.14 for π, and drag and drop the correct answers for each problem below.
A. What is the area of the circle?
B. What is the diameter of the circle?
C. What is the circumference of the circle?
Answer:
A. 28.27
B. 6ft
C. 18.85
Step-by-step explanation:
:)
i need help asap plz
Pease no links i would just like the answer ASAP
The volume of a right rectangular prism is 70 7/8 cubic feet and its base is a square with a side length of 4 1/2 feet. what is the height?
Answer:
7/2 feet
Step-by-step explanation:
Volume of Right Rectangular Prism: V = w * h * l
You are given the volume, and the base (which would include l and w)- and are told to find h.
70 7/8 cubic feet = 4 1/2 feet * h * 4 1/2 feet (simplify the right side)
70 7/8 cubic feet = 81/4 feet squared * h (divide both sides by 81/4)
7/2 feet = h
The height will be 7/2
Hello! So I have this homework due in 1 hour, can someone help?
( i’ll rate 5 star! )
a. Common Denominator = 8
[tex]\frac{1}{8\\}[/tex] * [tex]\frac{1}{1}[/tex] = [tex]\frac{1}{8}[/tex] /// [tex]\frac{1}{2}[/tex]*[tex]\frac{4}{4}[/tex]=[tex]\frac{4}{8}[/tex]
b. Common Denominator = 40
[tex]\frac{1}{8}[/tex] * [tex]\frac{5}{5}[/tex] = [tex]\frac{5}{40}[/tex] /// [tex]\frac{9}{5}[/tex] * [tex]\frac{8}{8}[/tex] = [tex]\frac{72}{40}[/tex]
c. Common Denominator = 24
[tex]\frac{1}{8}[/tex] * [tex]\frac{3}{3}[/tex] = [tex]\frac{3}{24}[/tex] /// [tex]\frac{11}{6}[/tex] * [tex]\frac{4}{4}[/tex] = [tex]\frac{44}{24}[/tex]
What is the value of H ?
Answer:
56 degrees
Step-by-step explanation:
Answer:
56 degrees.
Step-by-step explanation:
So within the image, you see that a right angle contains 34 degrees and an unknown value. To solve this, subtract 34 degrees from 90 to get this value. This value is 56 degrees.
Since h is a vertical angle with the 56 degree angle, it is also 56 degrees.
Name this Solid
pentagonal prism
pentagonal pyramid
hexagonal prism
hexagonal pyramid
Answer:
hexagonal pyramid
Step-by-step explanation:
i think its this but otherwise pay attention in class
Bernita is buying fencing for her vegetable garden to keep her dogs out. The length of her garden is 13.6 feet, and the width is 11.3 feet. How much fencing material should she purchase to build the fence around the garden?
A. 24.9 ft
B. 49.8 ft
C. 50 ft
D. 153.68 ft
Answer:
153.68
Step-by-step explanation:
Area = L • W
Area: 13.6 • 11.3 = 153.68
Area = 153.68 so ft
Hope this helps!