The following table shows the data collected from a random sample of 100 middle school students on the number of hours they do household chores every week
There are 1,500 students in the school. Based on the sample proportion, how many students in the school would be expected to do household chores for at least two hours every week?
A: 480 B: 960 C: 1,020 D: 1,440
Answers
There will be 1020 students in the school doing household chores for at least two hours every week.
What is a ratio?A ratio is a comparison of two attributes of a similar kind.
Based on the random sample, the number of students doing household chores for at least two hours every week =64+3+1 =68
Out of 100, the number of students doing household chores for at least two hours every week = 68
So, out of 1, the number of students doing household chores for at least two hours every week = 68/100
So, out of 1500, the number of students doing household chores for at least two hours every week = (68/100)*1500 =1020
Thus, there will be 1020 students in the school doing household chores for at least two hours every week.
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Related Questions
Leroy works part time for a moving company. One day he had to move 34 boxes from a truck to inside a house. After moving some boxes, he took a break and told his boss that he has only 15 more boxes to move. Which equation can be solved to find how many boxes Leroy moved before his break?
Answers
Answer:
15 - x = 34
Step-by-step explanation:
A polygon is regular if each of its sides has the same length. Find the perimeter of the regular polygon. #36
Answers
Finding the value of x:
5 - 2x = -4x + 9
-2x + 4x = -5 + 9
2x = 4
x = 2
Finding one side of the triangle:
5 - 2(2)
= 1cm
Perimeter of the triangle:
1 x 3
= 3cm
The perimeter of the triangle is 3 unit.
What is a Triangle?
A triangle is a polygon with three sides, angles and vertices.
The triangle is classified into various types on the basis of the angle and on the basis of the equality of the length of the sides, as obtuse , acute and right angled triangle and scalene, isosceles and equilateral triangle.
A polygon is called regular if it has all sides equal.
The figure shows a triangle.
The two sides of the triangle are 5-2x and -4x+9
When all the sides of the triangle is equal, it is called an equilateral triangle.
5-2x = -4x +9
Taking the like terms on one side,
-2x +4x = 9 -5
2x = 4
x = 2
The measure of each side is,
5 - 2*2 = 1
-4x +9 = -4 * 2 +9 = 1
The side length is 1 unit.
The perimeter of a triangle is the sum of all sides, as all the sides are equal, the perimeter is equal to 3 * side.
Perimeter = 3 * 1
Perimeter = 3 unit.
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12(x-17) rewrite the expression without using grouping signals
Answers
12x - 204
Hope this helps!
256804 to nearest hundred thousand
Answers
The ratio of the side length of Square A to the side length of Square B is 4:9. The side length of Square A is 12 yards. What is the perimeter of Square B?
Answers
cross multiply
(4)(B) = (9)(12)
4B = 108
B = 108/4
B = 27
P = 4a...where a is the length of one side
P = 4(27)
P = 108 yds <=== perimeter of square B
A drought can cause the level of the local water supply to drop a few inches each week. Suppose the level of water supply drops 2 inches each week. How many will it change in 4 weeks?
Answers
2 inches times 4 weeks
2x4=8
Solve for x.
6x - 2 = x - 2
--------
4
The 6x - 2 is divided by 4
Answers
multiply both sides by 4
6x-2=4(x-2)
6x-2=4x-8
minus 4x both sides
2x-2=-8
add 2 to both sides
2x=-6
divide both sides by 2
x=-3
When Mr. J. Raff took his two children to the zoo, their tickets cost $8.75. The next family in line was Mrs. Ella Fant with Grandpa and the five Fant kids. Their tickets cost a total of $19.75. How much does the zoo charge for each adult and for each child?
Answers
2A + 5K = 19.75
Change the first expression so that we can subtract the As
2A + 5K = 19.75
2A+4K= 17.50
If the signs are the same, subtract one expression from another
K= 2.25
substitute K into any expression to get A
A+4.50= 8.75
Subtract 4.50
a=4.25
K=$2.50
A= $4.25
The zoo charges approximately $4.42 for each adult and $0.92 for each child.
Explanation:To determine the cost of an adult ticket, we can subtract the cost of the children's ticket from the total cost. Let's set up a system of equations using variables for the cost of an adult ticket (a) and the cost of a child ticket (c):
a + 2c = 8.75
a + 5c = 19.75
Multiplying the first equation by 5 and subtracting the second equation from it, we get:
5a + 10c - a - 5c = 43.75 - 19.75
4a + 5c = 24
Now we can solve this system of equations to find the values of 'a' and 'c'.
Multiplying the first equation by 4 and subtracting the second equation from it, we get:
4a + 8c - 4a - 20c = 35 - 24
-12c = -11
c = -11 / -12
c = 11 / 12
Substituting the value of 'c' back into the first equation, we get:
a + 2 * (11 / 12) = 8.75
a + 11 / 6 = 8.75
a = 8.75 - 11 / 6
a = 53 / 12
So, the zoo charges approximately $4.42 for each adult and $0.92 for each child.
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PLS HELP!!!!!
Which pair of fractions shows 5/6 and 3/8 correctly converted with their least common denominator? A. 5/48 and 3/48 B. 40/48 and 18/48 C. 5/24 and 3/24 D. 20/24 and 9/24
PLS HELP!!!!!
Answers
Naomi is two-thirds as tall as her father. If Naomi is 54 inches tall, how tall is her father?
Answers
=27*3
=81
answer is 81 inches
Answer:
Naomi's father is 81 inches tall.
Step-by-step explanation:
Naomi is two-thirds as tall as her father.
Let "x" be the Naomi's father height.
Naomi is 54 inches tall.
[tex]\frac{2}{3}.x = 54[/tex]
We need to solve for x.
To solve for x, multiply both sides by the reciprocal of [tex]\frac{2}{3}[/tex].
The reciprocal of [tex]\frac{2}{3}[/tex] is [tex]\frac{3}{2}[/tex].
[tex]\frac{3}{2} . \frac{2}{3} . x = 54.\frac{3}{2}[/tex]
x = [tex]54.\frac{3}{2}[/tex]
x = 27.3
x = 81
So, Naomi's father is 81 inches tall.
At basketball camp, Kyle scored 4 more than one fifth as many points as Kurt. If Kyle scored 12 points, how many points did Kurt score?
Answers
=4+2.4
=6.4
How can the statement be written as a conditional statement in if-then form? Lines on a coordinate plane are perpendicular if they have opposite reciprocal slopes.
A) If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular.
B) If lines are on a coordinate plane, then they are perpendicular.
C) If lines are on a coordinate plane, then they have opposite reciprocal slopes.
D) If lines have opposite reciprocal slopes and are perpendicular, then they are on a coordinate plane.
Answers
the answer IS A. got it right on e2020
The correct conditional statement in if-then form for the given statement is 'If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular', which is option (A).
Explanation:The given statement can be written as a conditional statement in if-then form: 'If lines on a coordinate plane have opposite reciprocal slopes, then they are perpendicular'. This represents the option (A). Here, the 'if' part presents the condition of lines on a coordinate plane having opposite reciprocal slopes, and the 'then' part gives the conclusion that they are perpendicular. It's called conditional since the conclusion depends on the condition being true.
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What is 11 divided by 3
Answers
There would be a remainder which goes on and on as a decimal.. so you need to write it as a mixed number instead..
What is 23.3 divided by 119?
Answers
lester and kari are playing a number pattern game. kari wrote the following pattern. 45.5,49,52.5,__,59.5
what is the unknown number in the pattern kari wrote?
show work
Answers
6+8x/2 = 5x what is x?
Answers
6+8x/2 = 30 if x = 6 and 5x = 30 if x =6
Answer:
x=3
Step-by-step explanation:
6+8x/2=5x
6+8x/2*2=5x*2
6+8x=10x
6+8x-8x=10x-8x
6=2x
6/2=2x/2
3=x
Also I took the test so I know this is right
Chase answers 3/4 of his math questions correctly. There were 40 questions on the test.
a. How many did he get right?
b. How many did he miss?
Answers
Translate into an algebraic expression:
How old Steve will be in 2 years if k years ago he was w years old?
Answers
k + w is his current age.
We need to find his age 2 years in the future.
k+w+2 is your answer
Hope this helps!
Find the greatest factor of 70, 30 and 50
Answers
Please help me out with this
Answers
3.4, 2.1, -1.2, -3.4, and then -7.1.
With absolute value, the numbers from greatest to least are:
|7.1|, |3.4|, 3.4, 2.1, |1.2|.
However, this is assuming that Friday is 3.4, which was given information on the last question. Hope this helps!
in order for Brady to earn a b in his biology course, his test scores must average at 80%. ON the first 5 tests, he has an average of 77%. There is one test remaining in the course. What is the minimum score Brady needs to earn on the last test to receive a b in the class?
Answers
(77*5 out of 5*100 points)
So if we want to add a test and have a 80% average this is what we have to do:
(385+x)/6 = 80 (multiply by 6 on both sides)
385 + x = 480 (minus 385 on both sides)
x = 95
Answer:
Brady needs to earn a 95% on the final test
Step-by-step explanation:
Hello, great question. These types are questions are the beginning steps for learning more advanced Algebraic Equations.
Before we can actually solve this we need to create a formula that calculates the grade of the last test in order to get an average of 80%. Since he got a 77% average for his first 5 tests, we can multiply 0.77 by 5, add the final test and then divide by the total amount of tests taken. Like so,
[tex]0.80 = \frac{(0.77*5)+x}{6}[/tex]
[tex]0.80 = \frac{3.85+x}{6}[/tex] .... multiply both sides by 6
[tex]4.8 = 3.85+x[/tex] ... subtract both sides by 3.85
[tex]0.95 = x[/tex]
Finally, we can see that Brady needs to earn a 95% on the final test in order to increase his overall average to 80%.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
100 envelopes cost you .70 what would 250 envelopes cost you
Answers
2.5*7 = 1.75
$1.75
Hope this helped!
that's is the answer
HELP ME PLEASE!!!!!!!! Evaluate. 2⋅(5855)
Answers
The explanation provides a step-by-step process to determine the minimum trips required for the miners to cross the river.
To determine the minimum number of trips required for the miners to cross the river, we need to carefully consider the constraints given.
First, A and B can cross together because the maximum combined weight of their cargoes is 90 kg (40 + 50) which is less than 100 kg.
Then, A returns alone, carrying B's cargo, leaving B and C on the other side. B and C cross together as the combined weight of their cargoes is 40 kg (20 + 20) which is less than 100 kg.
Finally, B returns and takes A's cargo, crossing with C's cargo. In total, the minimum number of trips needed is 9 (Option A).
if a data set has 16 data values the number of values in the upper quartile is
Answers
Please help and explain the outcome..Thanks so much
Answer:
its 4
Step-by-step explanation:
I need the answer to RACING in Blue
Thanks
Answers
What is 5.3 divided by 0.2
Answers
5.3 divided by 0.2 is equal to 26.5.
Explanation:To calculate 5.3 divided by 0.2, you can divide the numerator (5.3) by the denominator (0.2). In this case, 5.3 divided by 0.2 is equal to 26.5.
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The minimum height for riding on the Super Screaming Spinner at the theme park is 52 inches. Which of the following expressions shows the height to ride?
A. h < 52
B. h ≤ 52
C. h > 52
D. h ≥ 52
Answers
Answer:
D )Expression for height to ride is h ≥ 52
Step-by-step explanation:
Given : The minimum height for riding on the Super Screaming Spinner at the theme park is 52 inches.
To find : Which of the following expressions shows the height to ride.
Solution : We have given that
Minimum height of spinner = 52 inches.
It state that height of spinner for riding at least 52 it mean it must be 52 or greater than 52
Therefore, D )Expression for height to ride is h ≥ 52
Answer: Option 'D' is correct.
Step-by-step explanation:
Since we have given that
The minimum height for riding on the Super Screaming Spinner at the theme park is 52 inches.
So, Let the height to ride be 'h'.
We have mentioned that value of h is must be greater than or equal to 52 inches.
So, it becomes,
[tex]h\geq 52\ inches[/tex]
Hence, Option 'D' is correct.
Which expression is not equivalent to the others? Explain your reasoning.
_-1/4 -1/4 1/-4 _-1/-4
Answers
The rest of the expressions are equal to: -0.25
The last one is: 0.25
The reason it is not equivalent is because it is a negative divided by a negative whereas the rest are a negative divided by a positive. A negative divided by a negative will equal a positive. It was the only positive integer in the expressions listed above. Thus, the answer is: -1/-4
cat weigh 12.37 pounds whats is the word formfor the value of the 7 in 12.37
Answers
The value of '7' in the number '12.37' is seven-hundredths (0.07).
Explanation:The student is asking for the word form for the value of 7 in the decimal number 12.37. In any decimal number, the first digit after the decimal point represents the 'tenths' place, and the second digit represents the 'hundredths' place. Thus, the '7' in 12.37 represents seven-hundredths. In another words, the digit 7 here carries the value of 0.07.
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Chris wants to order DVD’s over the internet.Each dvd cost $15.99 and shipping the entire order costs $9.99.If he can spend no more than $100,how many DVD’s could he buy (please so all work)
Answers
Answer: There are 3 DVD s that can be bought with under $100.
Step-by-step explanation:
Since we have given that
Cost of DVD = $15.99
Cost of Shipping = $ 9.99
Total cost per DVD would be
$15.99 + $9.99 = $ 25.98
Amount he has to spend no more than $ 100.
So, number of DVDs would be
100 ÷ 25.98 = 3.84
Hence, there are 3 DVD s that can be bought with under $100.
Chris can order 3 DVDs over the internet, if he spent $100.
Given here,
Cost of DVD = $15.99
Shipping Cost = $ 9.99
Amount spend = $ 100.
Total cost per DVD,
$15.99 + $9.99 = $ 25.98
So, number of DVDs would be buy,
100 ÷ 25.98 = 3.84
Therefore, Chris can order 3 DVDs over the internet, if he spent $100.
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