HELP GRADE 4 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
= 475/1500
=19/60
ii) = num of families having 1 girl/ total num of families
= 814/1500
iii) = num of families having no girl/ total num of families
= 211/1500
iv) 475/1500 + 814/1500 + 211/1500 = 1
(1) Total No of families = 1500
Total No of families with 2 girls = 475
Probability of family being chosen at random having 2 girls = 475/1500 = P1 = 19/60
(2) Total No of families = 1500
Total No of families with 1 girl = 814
Probability of family being chosen at random having 1 girl = 814/1500 = P2 = 407/750
(3) Total No of families = 1500
Total No of families with no girl = 211
Probability of family being chosen at random having no girls = P3 = 211/1500
(4) P1 + P2 +P3
=19/60 + 407/750 + 211/1500
= 475 + 814 + 211/1500
=1500/1500
=1
Yes, the sum of there Probabilities does add up to 1
Related Questions
Emily noticed that on halloween, her child got three basic types of candy: chocolate, gummy, and hard candy. She has 15 more hard candies that chocolate, and 5 less than twice the amount for gummy candy than chocolate. if she had a total of 178 pieces of candy, how many of each type did she get?
Answers
Answer: gotta scroll down sry
Step-by-step explanation:
First set up equations with variables that show the information you have:
c = chocolate // g = gummy // h = hard candy
178 = c + g + h
h = c + 15
g = 2c - 5
Then, solve all the equations for a number:
178 = c + g + h (leave as is)
15 = -c + h (subtract 'c' from the original equation's right side and switch the sides of the equation)
-5 = -2c + g (subtract '2c' from the original equation's right side and switch the side of the equation)
Then, line up all the variables and subtract the top equation by the lower two:
178 = c + g + h
15 = -c + 0g + h
-5 = -2c + g + 0h
---------------------------
168 = 4c + 0g + 0h >>>> 168 = 4c
Solve for 'c' and plug it into the other equations to find 'h' and 'g':
168/4 = 4c/4
42 = c
15 = -(42) + h -5 = -2(42) +g
57 = h 79 = g
Add all the numbers together to double-check:
42 + 57 + 79 = 178
chocolates = 42
gummies = 79
hard candies = 57
what do you think the deffinition of woman is ???
( Just something fun to see how people think of this. )
Answers
Answer:A woman is an adult female human. Prior to adulthood, a female human is referred to as a girl (a female child or adolescent). The plural women is sometimes used in certain phrases such as "women's rights" to denote female humans regardless of age.
Step-by-step explanation:
Answer:
An adult female human being.
Find and interpret the marginal frequencies. Cell Phone Company A B Data Plan Limited 78 94 Unlimited 175 135 people have a limited data plan. people have an unlimited data plan. people use Company A. people use Company B. people were surveyed. Skip to navigation
Answers
Answer:
78
Step-by-step explanation:
78
help me on this question pls
Answers
Answer:
Therefore, it made 42 candles.
Step-by-step explanation:
Volume of cylinder = 3.14 * r² * h = 3.14 * 2² * 6 = 3.14 * 24 = 75.36 in³
It made = 3165.12 in³/75.36 in³ = 42
Make word problems with the following equations:
1) 8 - ( - 3)
2) 2 - 8
3) Design your own problem, make it difficult with a number line visual and a word problem.
Answers
Dan and Clair both have 0.00$ in their bank accounts. Dan works 5 days a week with 10.00$ per hour and he works 10 hours. Dan brings home 500$ each week and puts 250$ in his bank account. He spends 200$ on a vacation and spends 42$ on food. Clair doesn’t work that much. She spends most of her days babysitting. She get 5$ per hour and is their once a week for three hours. She gets 15$ a week and puts it in her account and spend 18$ . What is the difference from Dans bank account money to Clair’s?
Hope it helps.
Calculate the area of the annulus which has an external diameter of 25cm and an internal diameter of 15cm
Answers
Answer:
314.159 square cm
Step-by-step explanation:
Area of an annulus with external radius r1 and internal radius r2 is given by
π(r1² - r2²)
radius = half diameter
r1 = 25/2 = 12.5 cm
r2 = 15/2 = 7.5 cm
Area of annulus
= π(12.5² - 7.5²)
= 314.159 square cm
The correct answer is 314.159 square cm
Proportional or not?
Equation=_____
Answers
Knowing this, we’re able to use the equation -
y = 3x
Hopefully this made sense! If you have any questions, please ask. Have a great day!
y = 3x
Apollo traveled 54 leagues in 3 days. Then he tripled his rate. How long would it take him to travel 594 leagues at this new speed?
Answers
Answer:
11 days
Step-by-step explanation:
First, you have to find the original rate. Then, multiply that by three. Lastly, take 594 and divide by the tripled number.
54 ÷ 3 = 18
18 x 3 = 54
594 ÷ 54 = 11
Suppose you have two bank accounts. In Account A you deposit $100. In Account B you deposit $300. Account A has a simple interest rate of 4.3%. Account B has a simple interest rate of 2.1%. One year later, you get a bank statement from each bank and one of the statements shows an incorrect amount of interest. The interest for Account A is $4.30. The interest for Account B is $630. Which account statement is incorrect? Find the bank's likely error.
Answers
The interest for Account B is likely incorrect.
The interest for Account A can be calculated as follows:
$100 * 4.3% = $4.30
The interest for Account B should be calculated as follows:
$300 * 2.1% = $6.30
Since the interest for Account B is much higher than it should be, the statement from that account is likely incorrect. The bank's likely error is overstating the interest earned on Account B.
75% of what number is 24? Show your work or explain how you arrived at your answer.
Answers
24=3x/4
24 x 4/3 = x
answer is 32!
The Pythagorean Theorem and its Converse
1-5
Please answer all questions and solve step by step and please try to show/explain with the least words as possible and use mostly numbers to for explain there can still be some words tho.
Answers
The radius of the base of the cone is √189 ft.
What is the Pythagorean theorem?In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem. The theorem can be used to determine how steep mountains or slopes are. To calculate the distance between an observer and a location on the ground when the observer is looking down from a tower or structure. It is mostly utilized in the construction industry.
For question 5 :
Given a right-angle triangle that has a hypotenuse of 14 and a base is 9 cm.
From the Pythagorean theorem:
Hypotaneuse² = base² + height²
14² = 9² + height²
height² = 196 - 81
height² = 115
height = √115
For question 4:
The distance from the top of the cone to the edge is 15 feet. The height of the cone is 6 feet.
The radius of the cone = base pf right angle triangle
From the Pythagorean theorem:
Hypotaneuse² = base² + height²
15² = base² + 6²
225 - 36 = base²
base = √189
For question 3:
The distance from the plane to the airport is = 3.35 * 10,000ft
for Question 2:
the height of the television will be 15.65 inches
Learn more about the Pythagorean theorem here:
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Please help me with this maths question
Answers
-, x=-3, y=-1
2
substitute X=-3, y=-1 -1 is the answer
Three out of 5 students at Maria's school participate in a school club or sport. There are 475 students at marias school how many of them can be expected to participate in a school club or sport
Answers
So, the expected number of participating students is:
475 * (3/5) = 285.
Therefore, we can expect 285 students out of 475 to participate in a school club or sport.
HELP PLEASE Three cylinders have a height of 8 cm.... Find the volume of each cylinder. Round all answers to the nearest hundredth. Use 3.14 for pi.
Answers
Step-by-step explanation:
Just use the equation for volume of a cylinder
For cylinder 1
V=(3.14)r^2h
V=(3.14)1^2(8)
V=(3.14)(1)(8)
V=25.12 cm
For cylinder 2
V=(3.14)r^2(h)
V=(3.14)(2^2)(8)
V=(3.14)(4)(8)
V=100.48 cm
For cylinder 3
V=(3.14)r^2(h)
V=(3.14)(3^2)(8)
V=(3.14)(9)(8)
V=226.08cm
If your confused or have a question just ask
Hope this helped :)
Answer:
Step-by-step explanation:
The volume of the cylinder is calculated by multiplying the area of its base by its height. The height of the cylinder is 8 inches (the height of the cube through which it is being drilled). Therefore, its volume is πr2h = π * 3.752 * 12 = 168.75π in3.
Reflect the point (-3,-8) across the y-axis
Reflect the point (-3,-8) across the x-axis
Answers
Step-by-step explanation:
When reflecting a point across an axis, that means the opposite coordinate will switch signs.
Reflecting a point across the YAXIS means that the X coordinate will switch signs
Reflecting a point across the XAXIS means that the Y coordinate will switch signs
Taking (-3, -8)....
Reflecting it across the y-axis, we will flip the sign of the X coordinate. It's -3, so we make that +3, giving us
(3, -8)
Reflecting across the x-axis, we will flip the sign of the Y coordinate. it's -8, so we make that +8, giving us
(-3, 8)
Question 5(Multiple Choice Worth 2 points)
(Rotations MC)
Use the graph to answer the question.
graph of polygon ABCD with vertices at 0 comma 0, 5 comma 2, 5 comma negative 5, 0 comma negative 3
Determine the coordinates of polygon A′B′C′D′ if polygon ABCD is rotated 270° counterclockwise.
A′(0, 0), B′(−2, 5), C′(5, 5), D′(3, 0)
A′(0, 0), B′(2, −5), C′(−5, −5), D′(−3, 0)
A′(0, 0), B′(−5, −2), C′(5, −5), D′(3, 0)
A′(0, 0), B′(−5, −2), C′(−5, 5), D′(0, 3)
Answers
Answer:
23
############################
Answer: The answer the second option
Step-by-step explanation:Because since 270 degrees counterclockwise is equal to 90 clockwise you would use the 90 formula and swap the x and y and add a negative to the x and if you do that with each on the second d option should match you answer exactly.
P.S Also, I know this is absolutely correct because I took the test and got a 100, and I hope this helps you in the future to understand a question similar to this without any help, you got this and I hope you have a wonderful day or night :)
In 9 hours Ali reads 63 chapters of a book. What is his rate in chapters per hour?
Answers
Answer: 7
Step-by-step explanation:
In 9 hours, Ali can read 63 chapters. To find how many chapters, on average, he can read per hour, we divide 63 by 9 to get 7.
This is how we put it as an equation:
[tex]9 hours = 63 chapters\\1 hour = \frac{63}{9} chapters \\1 hour = 7 chapters[/tex]
If you still have questions, please reply back, I will help you as much as I can :)
Simplify 2x + 5(- 7x - 8) - 10
Answers
……………………..,……..
Jayce is buying a used car. He plans to split the cost into monthly payments over the next 48 months. If each payment is $128.76, how much will Jayce pay for the car in all?
Answers
Answer: 6180.48
Step-by-step explanation:
Based on the given conditions, formulate: 48*128.76
Calculate the product or quotient: 6180.48
get the result: 6180.48
Answer: 6180.48
Don't forget to give a thanks:)
Answer:
6180.48
Step-by-step explanation:
Because 128.76 times 48 is $6180.48. So in all jayce will pay $6180.48
your are welcome.
Please help answer!!
Answers
Answer:
Solution = 24 mice
Step-by-step explanation:
The ratio of brown mice to white mice is 5:3 this means the number of brown to white mice has to double until there is 6 more brown mice than white mice.
For example:
5:3
10:6
15:9
15 + 9 = 24
Therefore, there are 24 mice at the store.
15+9=24
5:3
10:6
15:9
You have 2 different savings accounts. For Account A, the simple interest earned after 9 months is $6.75. For Account B, the simple interest earned after 21 months is $19.25. If the interest rate is 3.6% for Account A and 2.2% for Account B, how much is the principal in each account? Which account earned you the most interest the first month? Explain your answer.
Answers
Answer:
Account A Principal: $250
Account B Principal : $500
Account B earned $0.17 more interest in the first month
Step-by-step explanation:
Let the principal in account A be PA and the principal in account B be PB
Simple interest I = Prt where P is principal, r is interest rate (in decimal) and t - time in years
Therefore, given interest I
P = I/rt
We will assume both interest rates are annual interest rates
For account A, interest = 3.6% per year
This works out to 0.036 per year
For account B, interest = 2.2% which works out to 2.2/100 per year = 0.022 per year
Account A
I = 6.75, r = 0.036 t = 9 months = 9/12 year = 3/4 year = 0.75 year
PA = 6.75/(0.036 x 0.75) = $ 250.00
Account B
I = 19,25, r = 0.022, t = 21/12 = 1.75 years
PB = 19.25/(0.022 x 1.75) = P = $ 500.00
Account A interest earned per month = 6.75/9 = $0.75
Account B interest earned per month = 19.25/21 = $0.92
Hence account B earned more interest in the first month
The amount of interest earned by account B over account A
= 0.92 = 0.75 = $0.17
Brainliest:Cube A has a side length of 4 cm. Cube B has sides that are twice as long as Cube A. Find the volumes of Cube A and Cube B.
Answers
Answer:
Step-by-step explanation:
96 sq. cm. for cube a and cube b is 192sq cm
Answer:
Cube A: 64³ cm
Cube B: 512³ cm
Step-by-step explanation:
Since we know these figures are cubes, we only need to know the length of one side, 4. To find Cube A’s volume, we multiply 4 times 4 times 4 to get 64. Cube A has a volume of 64³ cm.
We know Cube B’s sides are twice as long as Cube A, so they have to be 8 cm. 8 times 8 times 8 is 512. Cube B has a volume of 512³ cm.
i don't know how to do this onee please help
Answers
Answer:
A
w = 85
Step-by-step explanation:
To find out the number you can divided 102 by 1.2 and you get 85 meaning 85 is the answer.
Answer:
A;
Step-by-step explanation:
120% = 1.2 (decimal form)
Therefore: 1.2 x w = 102 or 102 = 1.2 x w
102 = 1.2 x w
Divide both sides by 1.2 to get:
100 = w
Each student in your class must do 24 math problems on an assessment. There are 85 students on the team. How many problems will your teacher have to grade?
Answers
Answer:
2040
85 * 24 = 2,040
Step-by-step explanation:
Hope it helps! =D
Answer:
2040
Working out formula: 24 x 85 = 2040
Step-by-step explanation:
This is actually a simple question! Since there are 85 students on the team and they each have to complete 24 math problems in an assessment, this basically means you have to multply 85 by 24 which gives us 2040 questions in total that the teacher will have to grade!
On a scavenger hunt, you find 16 out of 20 objects. Write "16 out of 20" as a fraction in simplest form, a decimal, and a percent.
Answers
Decimal: 0.8
Percentage:8
Hi there, here's your answer:
According to the question, we find 16 out of 20 objects.
To express this in a fraction at its simplest form,
We first write down the fraction.
[tex]\frac{16}{20}[/tex]
The HCF of 16 and 20 is 4.
On dividing the numerator and denominator by 4, we get: [tex]\frac{4}{5}[/tex]
To express [tex]\frac{4}{5}[/tex] as a decimal:
Observe the denominator. We know that 5×2 = 10
On multiplying the numerator and denominator by 2, we get [tex]\frac{8}{10}[/tex]
Which, in decimal form, is 0.8
To express [tex]\frac{16}{20}[/tex] as a percentage,
We simply multiply the fraction by 100.
[tex]\frac{16}{20}[/tex] × [tex]100[/tex] [tex]= 16[/tex] × [tex]5 = 80[/tex]%
Therefore, 16 out of 20 in percentage is written as 80%.
Hope it helps!
help me on this pls thanks
Answers
Answer:
It costed $ 13,564.8 .
Step-by-step explanation:
radius = diameter/2 = 6/2 = 3 m
h = 5 m
volume = 3.14 * r² *h
= 3.14 * 3² * 5
= 3.14 * 45
= 141.3 m³
Concrete costed = $ 141.3 * 96 = $ 13,564.8
help me with this please ASAP!!
Answers
20 points for whoever helps me
Answers
Answer:
7.5 cm
Step-by-step explanation:
P= a + b + c
23 mm = 2.3 cm
2 cm
3.2 cm
2 + 2.3+ 3.2= 7.5 cm
ANSWER BEFORE 2/6 PLS!!!!
At Washington Elementary School, the sixth grade teachers are giving a prize to each student who does all their homework for a week. Mr. Price is trying to figure out how many students are in sixth grade so that he knows how many : prizes to buy. There are 26 kids in Ms. Wright's class, 28 kids in Mrs. Lynn's class, 25 kids in Ms. Render's class, and 27 kids in Mr. Price's class. Mr. Price goes to the store and buys 13 bags. In each bag there are 11 prizes. In Ms. Wright's class, 1/2 of the students did all of their homework. In Mrs. Lynn's class, 3/4 of the students did all of their homework. In Ms. Render's class, 4/5 of the students did all of their homework. In Mr. Price's class, 7/9 of the students did all of their homework. Mr. Price takes the remaining prizes and gives half of them to the fifth grade teachers. How many prizes did Mr. Price give to fifth grade?
Answers
Answer:
89
Step-by-step explanation:
because yes
Find the missing angles measurements pt. 2
6-10
(I point for each question)
Please answer all questions and solve step by step and please try to show/explain with the least words as possible and use mostly numbers to for explain there can still be some words tho.
Answers
Answer:
Step-by-step explanation:
Angle 5: 55
Angle 6: 125
Angle 7: 55
Angle 8: 125
Hope this helps.
the value of the x and y for the given system of equations are 6, and -2 respectively.
What are Systems of equations?Simultaneous equations, a system of equations Two or more equations in algebra must be solved jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular solution.
There are four methods for solving systems of equations: graphing, substitution, elimination, and matrices.
Given, a system of equations
2x + 5y = 2
2x - 5y = 22
Adding both equations:
4x = 24
x = 6
From equation 1
2 * 6 + 5y = 2
5y = -10
y = -2
Therefore, the value of the x and y for the given system of equations are 6, and -2 respectively.
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