To determine whether more families of students at the school would attend a musical or a comedy , she should Assign a number to each family, use a computer program to select 20 random numbers , Option A is the right answer.
What are different survey methods ?Some of the survey methods are Online Survey , Telephonic survey , Kiosk Survey , Face to Face Survey etc.
It is given that there are n number of families ,
To determine whether more families of students at the school would attend a musical or a comedy.
To do so she has to do random sampling from the group of families.
So , she should Assign a number to each family, use a computer program to select 20 random numbers.
Therefore Option A is the right answer.
The complete question is
The drama teacher wants to know whether more families of students at the school would attend a musical
or a comedy.
Which of the following survey methods will allow the drama teacher to make a valid conclusion about
which genre of performance more families would attend?
Choose 1 answer:
Assign a number to each family, use a computer program to select 20 random numbers
between 1 and the total number of families, and ask the families selected.
For each letter of the alphabet, assign a number to each family whose last name begins with
that letter, use a computer program to select a random number between 1 and the total
number of families whose last name begins with that letter, and ask the family selected.
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4 hours minus 1 hour, 59 minutes, 58 sec-
onds equals
A. 2 hours, 2 seconds.
B. 3 hours, 1 minute, 2 seconds.
C. 2 hours, 1 minute, I second.
D. 3 hours, 2 seconds.
Which system of equations can be used to find the roots of the equation 4x/2=x/3+2x
The system of equation can be used to find the root of the equation is y= x³-4x² +2x and y=0 , y=4x² and y= x³+2x
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
y=-4x²
y= x³+2x
By equating the above equation we have
-4x²=x³+2x
Now, y= x³-4x² +2x
and y=0
By equating the above equation we have
x³-4x² +2x=0
y=4x²
y= -x³-2x
By equating the above equation we have
4x²=-x³-2x
Lastly,
y=4x²
y= x³+2x
By equating the above equation we have
4x²=x³+2x
Hence, the equation can be used is y= x³-4x² +2x and y=0 ,
y=4x² and y= x³+2x
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how many spherical balls of diameter 15cm can be covered by 40 square metres of material
Answer:
It's very simple: divide the 40 m² area by area of 1 one sphere
[tex] \frac{40 \: m {}^{2} }{3.41 \times 15m {}^{2} } = 565[/tex]
How many gold medals the team won?
144 /360
Answer:
The team won 144 gold medals
Step-by-step explanation:
A fraction tells us how many parts of a whole we have
144 / 360 translated into words is 144 out of 360
144 is the part and the 360 is the whole (total)
We want to identity the amount of gold medals the team won had 360 opportunity medals and have 144 of them.Learn more about Fractions here: https://brainly.com/question/1622425
2
Select the correct answer.
What is the solution to the equation?
3+√3x5 = x
O A.
-2 and -7
OB.
2 and 7
O C.
-2
OD. 7
The solution to the equation is x = 7 , -2 , Option C and D is the right answer.
What is an Equation ?An equation is a mathematical statement formed when two algebraic expression are equated by an equal sign.
It is given that the equation is
[tex]\rm 3 +\sqrt{3x - 5}= x[/tex]
Taking square on both sides
3x-5 = (x-3)²
3x-5 = x² +9 -6x
x² -9x -14 = 0
x² -7x +2x -14 = 0
x(x-7) +2(x-7) = 0
(x-7)(x+2) = 0
x =7 , x = -2
Therefore the solution to the equation is x = 7 , -2 , Option C and D is the right answer.
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Simplify the exponential expression 48 ^1/2
O 2 (24^1/2)
O 3 (16^1/2)
O 4 (3^1/2)
O 16 (3^1/2)
Step-by-step explanation:
Hi There! Let me help you :)
To answer this question, we have to know about the way to simplify it. First, you find the factor of 48.
[tex] = {48}^{ \frac{1}{2} } [/tex]
[tex] = {(16 \times 3)}^{ \frac{1}{2} } [/tex]
[tex] = {16}^{ \frac{1}{2} } \times {3}^{ \frac{1}{2} } [/tex]
[tex] \: [/tex]
—Use the general formula of the exponential, where a^m/n = ^n√a^m.
[tex] \: [/tex]
[tex] = {16}^{ \frac{1}{2} } \times {3}^{ \frac{1}{2} } [/tex]
[tex] = \sqrt[2]{16} \times {3}^{ \frac{1}{2} } [/tex]
[tex] = 4 \times {3}^{ \frac{1}{2} } [/tex]
The answer is C.
a suvery shows that 55℅
Answer: No. The intervals defined by the margin or error overlap
Step-by-step explanation:
If we think about it, with the worst margins, 55% could be 48% and then the 45% would be 52%, showing there is no clear yes or no and it is possible that the intervals could overlap
Two similar triangles are shown below:
Two triangles are shown. The sides of the triangle on the left are marked 6, 4, 3. The sides of the triangle on the right are marked as 3, 2 and 1.5. For the triangle on the left, the angle between sides marked 4 and 6 is labeled as w, marked by a double arc, and the angle between the sides marked 6 and 3 is labeled as x, marked by a single arc. The third angle is marked by a triple arc. For the triangle on the right, the angle between sides marked 3 and 1.5 is labeled as y and the angle between the sides marked 2 and 3 is labeled as v, marked by a double arc. The angle between the sides 2 and 1.5 is labeled as z, marked by a triple arc, and it is also the angle on the top vertex of this triangle.
Which two sets of angles are corresponding angles?
∠w and ∠v; ∠x and ∠y
∠w and ∠y; ∠x and ∠v
∠w and ∠z; ∠x and ∠v
∠w and ∠z; ∠x and ∠y
Two sets of angles are corresponding angles will be ∠w = ∠v and ∠x = ∠y. Then the correct option is A.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
Two similar triangles are shown below:
Then two sets of angles are corresponding angles will be
∠w = ∠v and ∠x = ∠y
Then the correct option is A.
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Bailey and julie go running during their lunch break. bailey ran x miles while julie ran 3x miles. what information can we gather about the relationship between the number of miles bailey and julie ran?
The information we can see from the given data is that the speed of Julie is three times the speed of Bailey.
What is speed?Speed is defined as the ratio of the time distance travelled by the body to the time taken by the body to cover the distance.
Given that:-
Bailey and Julie go running during their lunch break. bailey ran x miles while Julie ran 3x miles.The speed of Bailey = x miles
The speed of the Julie = 3x miles
The ratio of the speeds will be given as:-
J / B = 3x / x
J / B = 3
J = 3 B
Therefore information we can see from the given data is that the speed of Julie is three times the speed of Bailey.
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decimal form of rational numbers 1/11
Answer:
1/11 = 0.090909090909090909........................
PLEASE IM GONNA CRY MAY GOD BLESS YOU IF YOU WILL ANSWER DONT JOKE
Find X = Find Y= please help ty :)
Answer:
X = 125° and Y = 75°
Step-by-step explanation:
Y = 75° because the line the bisects two parallel lines. When this happens, the angles at the corners are identical.
To find the value of "X", I first found the value of the last angle in the triangle. I found this by performing the following:
180° - 55° - 75° = 55°
The value of this missing angle is 55°. To find "X", I subtracted this value from 180°. I did this because lines always equal 180°
180° - 55° = 125°
In the year 1999, the surface elevation of Lake Powell was 3893 feet above sea level. In the year 2005, the surface elevation of Lake Powell was 3425.6 feet above sea level. Interpret the rate of change in this situation.
Answer:
Rate of Change = -77.9 feet/year
My interpretation: "Is Bad."
Step-by-step explanation:
The rate of change is the number of feet that Lake Powell dropped, divided by the number of years the drop took place. We want a value with a unit of feet/year.
Year Feet
1999 3893
2005 3425.6
Change
Year = (2005 - 1999) or 6 years
Feet = (3425.6 - 3893) or -467.4 feet
Rate of Change = (-467.4 feet)/(6 years)
Rate of Change = -77.9 feet/year
=======================
FYI: Lake Powell is 22.39 feet lower today (June 23, 2022) than it was 1 year ago.
Find the value of X.
Answer:
x=6
Step-by-step explanation:
check the scale factor by the fraction 10/5
after/before
it simplifies to 2 meaning that the second triangle is two times the size of the first
then take 3 fron segment AB to the similar segment DE and times it by the scale factor(2)
2×3=6
Answer:
6
Step-by-step explanation:
since AC = 5. and DF = 2(5) = 10
FW = 2(4)=8 DE= 2(3) = 6
therefore x = 6
Eleven upright dominos of increasing height are lined up to be knocked down. The dominos are numbered 0 to 10. The smallest domino, #O, is 3.00 inches tall and will be top- pled by a person to start the chain reaction. Each subsequent domino is 19% taller than the one before. What is the height of domino #10?
The height of domino number 10 is 56.9 inches.
What is a function?A function in mathematics set up a relationship between the dependent variable and independent variable. on changing the value of the independent variable the value of the dependent variable also changes.
The exponential function:-An exponential function is given by:
y = abˣ
where a is the initial value of y at x = 0, y, x are variables and b is the multiplication factor
Let y represent the height of the number x domino
Since the height of the smallest domino no 0 is 3 inches, hence a = 5. b = 100% + 19% = 1.19
y = 10(1.19)ˣ
For x = 10:
y = 10(1.19)¹⁰= 56.9 inches
Therefore the height of domino number 10 is 56.9 inches.
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Which function is graphed below?
-
Answer:
y=3 (1/3)x
Step-by-step explanation:
On a graph, the closest graph you pictured is this answer
Answer:
y = [tex]3 (\frac{1}{3} )^{x}[/tex]
Step-by-step explanation:
Step 1:
Check the y-intercept; in the graph, when x = 0, y = 3. Which equation satisfies this?
y = [tex]\frac{1}{3}[/tex] [tex](3)^{x}[/tex] = [tex]\frac{1}{3}[/tex] [tex](3)^{0}[/tex] = [tex]\frac{1}{3}[/tex] ❌
y = [tex]3 (\frac{1}{3} )^{x}[/tex] = [tex]3 (\frac{1}{3} )^{0}[/tex] = 3 ✅
y = [tex](\frac{1}{2} )^{x}[/tex] + 2 = [tex](\frac{1}{2} )^{0}[/tex] + 2 = 3 ✅
So the last two equations are possible.
Step 2:
Now check the y-value on the graph for any other x-value, whose corresponding y-value can be easily estimated from the graph.
For example, when x = 2, the y-value is between 0 and 1.
• 2nd equation: y = [tex]3 (\frac{1}{3} )^{x}[/tex] = [tex]3 (\frac{1}{3} )^{2}[/tex] = 0.333 ✅
• 3rd equation: y = [tex](\frac{1}{2} )^{x}[/tex] + 2 = y = [tex](\frac{1}{2} )^{2}[/tex] + 2 = 2. 25 ❌
∴ 2nd equation (y = [tex]3 (\frac{1}{3} )^{x}[/tex] ) is the one being represented by the graph.
Instructions: Simplify the algebraic expression.
[tex]4(-4x-\frac{3}{2} )[/tex]
(08.02)How many solutions are there for the system of equations of shown on the graph?
O No solution
O One solution
O Two solutions
O Infinitely many solutions
Answer: B. One solution
Step-by-step explanation: As you see, both of these lines intersect on the point (0, 3). The point where the lines intersect is the solution. Since these lines are perpendicular, they will only intersect one time. Therefore, there is only one solution, that being (0, 3).
I hope this helps!! Pls mark brainliest :)
Please help!!!!!!!
picture below
Answer:
This would shift the equation to the right by 5
Step-by-step explanation:
A sample has a sample proportion of 0.3 . Which sample size will produce the
widest 95% confidence interval when estimating the population parameter?
Answer: A 100
I did the text the other day
A sample size of 50 will produce the widest 95% confidence interval when estimating the population parameter.
What is Statistics?Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.
To produce the widest confidence interval, we need to choose the smallest sample size.
This is because as the sample size decreases, the margin of error increases, leading to a wider confidence interval.
Among the given options, the smallest sample size is 50.
Therefore, selecting a sample size of 50 will produce the widest 95% confidence interval when estimating the population parameter.
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Find the reflection of the point (25, 25) across the y-axis.
Answer:
(-25, 25)
Step-by-step explanation:
let me know if you want an explanation!
Peter gave away 5/12 of his marbles and had 70 left how many marbles he had at first
Answer:
There were 120 marbles to start
Step-by-step explanation:
Let x be the number of marbles at the start
x* 5/12 = number of marbles given away
1 -5/12 = 7/12 = fraction of marbles left
x * 7/12 = number of marbles left
x * 7/12 = 70
Multiply each side by 12/7
x *7/12 * 12/7 = 70 * 12/7
x =120
There were 120 marbles to start
What do you consider to be the advantages of the numerical values? What do you consider to be the advantages of the visual representations? Which do you prefer working with, and why?
Visual representation is preferable for working for its attractive charts, graphs etc.
The advantages of the numerical values :
1. Numerical values are present in numerical methods. Numerical methods are easier to calculate with the help of mathematical operations like addition, subtraction, multiplication, division & others.
2. No analytical solution is present in numerical methods, only the numerical values are there. So, this is an advantage of numerical values.
The advantages of the visual representations
1. Visual representation gives us an easier way of understanding.
2. Visual representation makes something more interesting to read or solve.
3. Visual representation is best to arrange quantitative datas by using charts, graphs, attractive colors etc.
Which is preferable for working and why?
Visual representation is preferable for working. Because it is more easier way to solve something. The gained interest from visual representation also help to solve something quicker.
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Answer:
I myself prefer visual representation because to me it helps to see things visually and for understanding and working with charts and graphs.
Numerical methods make equations easier to calculate because they give us help of mathematical operations like in addition, subtraction, multiplication, division & others.
Visual representations give us easier ways of understanding and makes something more interesting to read or solve by simply looking at the visual.
Step-by-step explanation:
rewrite to solve for y
12y+d=-19y+t
When we say to solve for something
⇒ essentially move everything to one side
⇒ and that 'something' to the other
In this case:
⇒ we need to move the y-variable by itself to one side
⇒ and everything else to the other
Let's apply that principle:
[tex]12y+d=-19y+t\\12y+19y=t-d\\31y=t-d\\y=\frac{t-d}{31}[/tex]
Answer: (t-d) / 31
Hope that helps!
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Answer:
this right here
Step-by-step explanation:
31y=t-d
Solve the problem 4(a+3)=-32
[tex]4(a + 3) = - 32 \\ 4a + 12 = - 32 \\ 4a = - 32 - 12 \\ 4a = - 44 \\ a = - 11[/tex]
Hope it helps
Please give brainliest
Step-by-step explanation:
4(a+3)=-32
4(a+3)/4=-32/4
(a+3)=-8
a+3-3=-8-3
a=-11
The swimming pool at Spring Valley High School is a rectangle with a width of 70 meters and a length of 30 meters. Around the perimeter of the pool is a tiled floor that extends w meters from the pool on all sides. Find an expression for the area of the tiled floor.
The expression for the area of the rectangular swimming pool is given as follows:
A = w² + 100w + 2100.
What is the area of a rectangle?The area of a rectangle of length l and width w is given by the multiplication of these measures, that is:
A = lw.
In this problem, considering the width of 70 meters and a length of 30 meters, plus the floor of w meters, we have that:
l = 30 + w.wi = 70 + w.Hence the area is given as follows:
A = l x wi = (30 + w)(70 + w) = w² + 100w + 2100.
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When given
Slope=4
Point= (2,-4)
What is this written in slope-intercept form?
-------------------------------------------------------------------------------------------------------------
Answer: [tex]\textsf{y = 4x - 12}[/tex]
-------------------------------------------------------------------------------------------------------------
Given: [tex]\textsf{Slope = 4, Point = (2, -4)}[/tex]
Find: [tex]\textsf{The equation in slope-intercept form}[/tex]
Solution: We need to plug in the values into point-slope form and after simplifying, distributing, and solving for y we will have our equation in slope-intercept form.
Plug in the values
[tex]\textsf{y - y}_1\textsf{ = m(x - x}_1\textsf{)}[/tex][tex]\textsf{y - (-4) = 4(x - 2)}[/tex]Distribute and simplify
[tex]\textsf{y + 4 = 4(x - 2)}[/tex][tex]\textsf{y + 4 = (4 * x) + (4 * -2)}[/tex][tex]\textsf{y + 4 = 4x + (-8)}[/tex][tex]\textsf{y + 4 = 4x - 8}[/tex]Subtract 4 from both sides
[tex]\textsf{y + 4 - 4 = 4x - 8 - 4}[/tex][tex]\textsf{y = 4x - 8 - 4}[/tex][tex]\textsf{y = 4x - 12}[/tex]Using the information that was provided in the problem statement we were able to determine that the equation in slope-intercept form was y = 4x - 12.
Answer:
y = 4x - 12
Step-by-step explanation:
Given:
slope of 4, and point (2, -4)
Here, we're being asked to write the equation in Slope-Intercept Form. As we have been given the slope and a point on the line, we can use the Point-Slope Form to be able to find that equation.
First, know the two forms:
⇒ Point-Slope Form: y - y₁ = m(x - x₁)
where: m is the slope, and (x₁, y₁) is the given point
⇒ Slope-Intercept Form: y = mx + b
where: m is the slope, and b is the y-intercept
Now, substitute the given values into the Point-Slope Form:
⇒ y - y₁ = m(x - x₁)
⇒ y - (-4) = 4(x - 2) [simplify]
⇒ y + 4 = 4x - 8
Change to the Slope-Intercept Form:
⇒ y + 4 = 4x - 8 [subtract 4 from both sides]
⇒ y + 4 - 4 = 4x - 8 - 4
⇒ y = 4x - 12
Therefore, the equation of the line in slope-intercept form is: y = 4x - 12
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Which answer choice shows the decimal 23.476 written in expanded form?
Answer: 23.476 = 20+3+0.4+0.07+0.006
Step-by-step explanation:
I think you were supposed to write down the choices but I will guess the answer is this one:
23.476 = 20+3+0.4+0.07+0.006
Hope I helped!
Please help!!!!!!!
picture below
Answer:
the first equation could be something along the lines of [tex]y=3x^{2}[/tex] then the second is [tex]y=3x^{2} -3\\[/tex]
Step-by-step explanation:
this is how shifting works
what is 8.31752 to the correct 3 decimal places
Answer:
8.31752 to correct 3 decimal places =
Step-by-step explanation:
8.318
brainiest pls it helps
