The method that can be used to randomly choose these 500 people is the use of systematic random sampling.
What is random sampling?Random sampling is defined as the method of sampling in which the whole sampling frame is being considered.
In order the survey a community of people to see whether they are willing to have their taxes increased for one year to fund the construction of the skate park, both the male and female should be considered.
The systematic random sampling will give the both male and female equal opportunity to the chosen.
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An arithmetic sequence has this recursive formula:
What is the explicit formula for this sequence?
Answer:
C
Step-by-step explanation:
the explicit formula for an arithmetic sequence is
[tex]a_{n}[/tex] = a₁ + (n - 1)d
where a₁ is the first term and d the common difference
from the recursive formula in the form
[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] + d
given
[tex]a_{n}[/tex] = [tex]a_{n-1}[/tex] - 7
with d = - 7 and a₁ = 4 , then explicit formula is
[tex]a_{n}[/tex] = 4 + (n - 1)(- 7)
Why is y = 63?? Isn’t (x-5)+51+(y-6)=180??
Answer:
coz it is
Step-by-step explanation:
the angle is 57° , so y is 63 as 63-6 = 57
Find the missing side of this right
triangle.
X
28
[?]
X =1
Enter the number that belongs in the green box.
Applying the Pythagorean theorem, the missing side of the right triangle is: √788.
What is the Pythagorean Theorem?To find the hypotenuse (c) of a right triangle, having two other legs a and b, the Pythagorean theorem states that, c = √(a² + b²).
Given the following:
c = xa = 2b = 28Plug in the values
x = √(2² + 28²)
x = √788
Missing side is: √788.
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Graph the function and identify the domain and range.
y=-3x^2
Answer:
Domain:
X is all the real numbers
or
[tex] - \infty < x < \infty [/tex]
Range:
[tex]y \leqslant 0[/tex]
or
[tex] - \infty < y \leqslant 0[/tex]
Step-by-step explanation:
This is the graph.
Which of the following rules is the composition of a dilation of scale factor 2, then a translation of three units to the right? a) (2x+3,y) b) (2x+6, 2y) c) (2x +3, 2y) d) (2x+6, y)
Answer:
The answer is C: (2x +3, 2y)
Step-by-step explanation:
When applying the dilation of a scale factor of 2, you have to apply it to both the x and y coordinate, which means you are multiplying the coordinates by 2.
Let's assume the coordinates you start with are (x, y). Apply the dilation of 2.
(x, y) -----> (2x, 2y)
Now you are moving the figure right. When moving right, this only effects the x coordinate since the x axis moves left and right. Moving right indicates you will add the number of units translated to the x coordinate.
Translation 2 units right:
(2x, 2y) -----> (2x +3, 2y)
Find the volume of the prism.
9km 8km 6km
The correct answer is option B which is the volume of the prism is 216 km³.
What is the volume of the prism?A prism is a three-dimensional solid with a triangular base called a triangular prism. The volume of the triangular prism is equal to the product of the area of the base and the height of the prism.
The volume of the prism will be calculated by using the formula below:-
V = Area of the base x Height
Since the base is a right-angle triangle so we will calculate the area of the right-angle triangle.
V = Area of the triangle x Height
V = ( 1/2 ) x 8 x 6 x ( 9 )
V = 216 km²
Therefore the correct answer is option B which is the volume of the prism is 216 km³.
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is f(x)=x^(2)-4 and f(x)=3(2-x) functions?
Answer:
Yes
Step-by-step explanation:
There is only one output value for each input value, which is the definition of a function.
Which of the following is a complex number?
OA. -8√-3/1/2
OB. 3√/+√√
9
5
OC. 9-17
OD. 5-2V7
2√7
4
Answer:
[tex]B)~ 3\sqrt{\dfrac 75} + \sqrt{- \dfrac 95 }[/tex]
Step-by-step explanation:
[tex]3\sqrt{\dfrac 75} + \sqrt{- \dfrac 95 }\\\\\\= 3\sqrt{\dfrac 75} + i\sqrt{\dfrac 95 }\\\\\text{It is now in the standard form of a complex number (a+bi).}[/tex]
A chef randomly pulls cupcakes from a box containing 6 cupcakes of the same shape and size. There is 1 cupcake with vanilla frosting, 3 cupcakes with chocolate frosting, and 2 cupcakes with pink frosting. He draws 1 cupcake and then draws out another cupcake without replacing the first one. Find the probability of picking 1 cupcake with chocolate frosting followed by another cupcake with chocolate frosting, and show the equation used, and solve it.
Answer:
To pull our the first chocolate, it would be a probability of 1/2.
To pull the second chocolate out, it would be a probability of 2/5.
Hope that helps, you just use ratios, the first cupcake needs to be chocolate, and there are 3 chocolate cupcakes out of the 6. Make that into a fraction 3/6, and simplify into 1/2.
The same goes for the second cupcake.
15
5. At the Redbridge School, of pupils have a pet dog, & have a cat and have a
The rest have no pets.
A)What fraction of the children has no pet? Write this in its simplest form.
B)There are 250 pupils at the School. How many children have no pets?
C)At the Bluebell School, 23% have no pets. What percentage increase of pupils at
the Bluebell School have no pets compared to the Redbridge School?
A percentage is a way to describe a part of a whole. The number of people who don't have pets is 50 people.
What are Percentages?A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.
To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.
Given at the Red bridge School, 1/3 of pupils have a pet dog 2/5 have cat and 1/15 have a hamster.
A.) Number of people who don't have pets = 1 - 1/3 - 2/5 - 1/15
= (15-5-6-1)/15
= 3/15
= 1/5
B.) Given there are 25 people at the school. Therefore, the number of people who don't have a pet is,
Number of people who don't have pets = (1/5) × 250 = 50
C.) The percentage increase of pupils at the Bluebell School that has no pets compared to the Red bridge School is,
Percentage increase = (23%-20%)/20% × 100% = 15%
Hence, the number of people who don't have pets is 50 people.
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Find the slope of the line.
Answer:
2
Step-by-step explanation:
we know the line goes through the origin, so we have point (0,0). next, find another point the line goes through. for example, point (2,4)
the slope formula for points (x1, y1) and (x2, y2) is (y2 - y1) / (x2 - x1). plug in the 2 points to get (4-0)/(2-0) = 4/2 = 2
The box is 450 square. The length is 10 inches and the width is 5 inches. What is the height of the box
Answer:
9 inches
Step-by-step explanation:
I assume you mean the volume of the box is 450.
In that case, to figure out for the volume we multiply 10 by 5. This gives us 50.
450/50=9
The height of the box is 9 inches
Give brainliest please!
hope this helps :)
whate is answer of 36-[100÷5{60-32(8÷4-1)}]
Answer:
[tex]67\frac{23}{28}[/tex]
Step-by-step explanation:
[tex]36-\left[100\div \:560-32\left(8\div \:4-1\right)\right]\\\\100\div \:560-32\left(8\div \:4-1\right)\\\\=100\div \:560-32\cdot \:1\\\\=\frac{100}{560}-32\cdot \:1\\\\=\frac{100}{560}-32\\\\=-\frac{891}{28}\\\\\\=36-\left(-\frac{891}{28}\right)\\\\36-\left(-\frac{891}{28}\right)\\\\=36+\frac{891}{28}\\\\\frac{36\cdot \:28}{28}+\frac{891}{28}\\\\\frac{36\cdot \:28+891}{28}\\\\=\frac{1899}{28}\\\\\\\frac{1899}{28}(1899\div28)=67\frac{23}{28}[/tex]
Find the length of the arc in terms of pi
Answer:
[tex]9\pi[/tex]
Step-by-step explanation:
[tex]\text{Arc length,}~ s = r\theta\\\\~~~~~~~~~~~~~~~~~~=12 \times \left( \dfrac{135\pi}{180} \right)\\\\~~~~~~~~~~~~~~~~~~=9\pi[/tex]
If you rolled two dice, what is the probability
that you would roll a sum of 3?
second
1
first
2 3
5
4
6
1
[?]
1,1 1,2 1,3 1,4 1,5 1,6
2 2,1 2,2 2,3 2,4 2,5 2,6
3 3,1 3,2 3,3 3,4 3,5 3,6
4,1 4,2 4,3 4,4 4,5 4,6
5 5,1 5,2 5,3 5,4 5,5 5,6
6,1 6,2 6,3 6,4 6,5 6,6
6
Probability =
Desired Outcome
All Outcomes
Simplify your fraction, then enter the numerator AND DENOMINATOR.
Thank youuuu
Answer:
2 / 36 = 1/18
Step-by-step explanation:
there are 2 ways to get 3
1 then 2 or 2 then 1 , 2 out of a possible 36 outcomes
3z+35=47 solve
help, i need answer
Answer:
z=4
Step-by-step explanation:
subtract 47-35
3z=12
divide both sides by 3
z=4
A circular disc has circumference 250 cm.
Calculate the radius of the disc.
[tex]\textit{circumference of a circle}\\\\ C=2\pi r ~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=250 \end{cases}\implies 250=2\pi r\implies \cfrac{250}{2\pi }=r\implies \stackrel{cm}{39.79}\approx r[/tex]
What is the probability of rolling a 6 sided die 4 times and getting an even number all 4 times?
Directions: Name each polygon and tell if it is regular or irregular.
Answer:
regular pentagon. 2 irregular. 3 irregular. 4 regular octagon. 5 regular nonagon. remember that regular polygon is a polygon that
Suppose you have entered 97-mile biathlon that consists of a run and a bicycle race. During your run, your average velocity is 8 miles per hour, and during your bicycle race, your average velocity is 27 miles per hour. You finish the race in 5 hours. What is the distance of the run? What is the distance of the bicycle race?
The distance of the run Will be 16miles and the Distance of the bicycle race will be 81 miles.
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.
Distance = average velocity × time
Let the time and distance of the run, respectively, be t₁ and.d₁
Let those of the bicycle race be t₂ and d₂
From the question,
t₁ + t₂ = 5
d₁ = 8t₁
d₂ = 27t₂
Total distance = 97
8t₁ + 27t₂ = 97
8 ( 5 - t₂ ) + 27t₂ = 97
40 - 8t₂ + 27t₂ = 97
40 + 19 t₂ = 97
19t₂ = 57
t₂ = 3 hours
t₁ + t ₂ = 5
t₁ = 5 - t₂
t₁ = 5 - 3 = 2 hours
Now the distances are calculated as:-
d₁ = 8t₁ = 8 x 2 = 16 miles
d₂ = 27t₂ = 27 x 3 = 81 miles
Therefore the distance of the run Will be 16miles and the Distance of the bicycle race will be 81 miles.
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In which number does the digit 3 have a value that is ten times greater than the value of the digit 3 in the number 145,317?
A number where the digit 3 has a value ten times greater than the 3 in 145,317 can be 143,417.
How to work with place values?
In any number, the place value refers to the "place" that a digit has on a number. The first one is the units place, the second is the tens place, and so on.
As more in the left is the place value, the largest value it represents.
Particularly, in 145,317
The 3 is on the third place, so it represents the value 300.
For example, in 143,417
The 3 is more in the left than before, this time on the fourth place, this time the value of the 3 is 3,000.
Then, a number where the digit 3 has a value ten times greater than the 3 in 145,317 can be 143,417.
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please help i need to turn this in
Answer:
a) -3
b) 9
c) -3
Step-by-step explanation:
a)
[tex]2^5 * 2^{-8} = 2^a[/tex]
In cases where we have a multiplication with exponents we keep the integer as it is and we add the exponents. 5 + -8 = -3. Therefore a is 3.
b)
[tex]\frac{4^7}{4^-{2}} = 4^b[/tex]
In cases when we have a division with exponents we keep the integers as it is and we subtract the exponents. 7 - (-2) = 7 + 2 = 9. Therefore, b is 9
c)
[tex]\frac{7^9}{7^c} = 7^{12}[/tex]
We are dividing again however we are finding the denominator.
9 - (c) = 12
Subtract from both sides: -c = 3, To make c positive we just make the value negative, c = -3. Therefore c is -3
Sara made hot chocolate mix to give to
her neighbors. She mixed 4 cups of sugar
with 2 cups of cocoa. Then she poured 12/2
cups of the mix in each jar. How many jars
did she fill?
If a prism is placed into a basin of water (density: 32.5 lbs/ft^3 ) displaces 3.3 lbs of water, what is the volume of the water that was displaced (in cubic inches)?
Please help
The volume of water that was displaced is 0. 000019 cubic meters.
What is volume?Volume is known to be the amount of space or capacity occupied by a three-dimensional solid shape.
It is denoted in cubic units.
How to calculate the volumeThe formula for calculating volume is;
Volume = mass ÷ density
Given that mass = 3. 3 Ibs and density = 32. 5Ibs/ ft∧3
Volume = 3. 3 ÷ 32. 5 = 0. 10 Ibs
How to covert Ibs to cubic meters
Ibs = 0. 00019 m∧3 (cubic meters)
Then, 0. 10 Ibs = 0. 00019 × 0.10 ÷ 1 = 0. 000019 cubic meters.
Therefore, the volume of the water displaced is 0.000019 cubic meters.
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Submitting a Bid
You want to bid on a project for the pool shown. The project involves ordering and installing the brown tile that borders the pool, and ordering a custom-made tarp to cover the surface of the pool. In the figure, each grid square represents 1 square foot.
You pay $5 per linear foot for the tile.
You pay $4 per square foot for the tarp
It takes about 15 min to install each foot of the tile
A) estimate the total cost for the tile and the tarp
Answer:
5,125
Step-by-step explanation:
Solve for x in the triangle. Round your answer to the nearest tenth.
X
5
22°
Between which two tenths is the decimal approximation of √7?
Answer:
2.6 and 2.7
Step-by-step explanation:
The actual square root of 7 is 2.64 and that is between 2.6 and 2.7.
Please solve with explanation (high points)
So, we know that:
[tex]A=\dfrac{1}{2}ab\\P=a+b+c\\a^2+b^2=c^2[/tex]
We also know that [tex](a+b)^2=a^2+2ab+b^2[/tex]. We will use that fact to find [tex]c[/tex] in terms of [tex]A[/tex] and [tex]P[/tex].
[tex]A=\dfrac{1}{2}ab\Rightarrow 2ab=4A\\P=a+b+c\Rightarrow a+b=P-c[/tex]
Therefore:
[tex](P-c)^2=c^2+4A\\P^2-2cP+c^2=c^2+4a\\2cP=P^2-4A\\c=\dfrac{P^2-4A}{2P}[/tex]
4gal 2qt - 3gal 3qt=
I need help with this one, it's just subtracting as is. Thank you
Answer:
= .75 gallons or 3 quarts
Step-by-step explanation:
Known
1 gallon = 4 quartsProblem:
4 gallons 2 quarts - 3 gallons 3 quarts
⇒ 2 quarts: 0.5 gallons
⇒ 3 quarts: 0.75 gallons
Add on both sides
4 + 0.5 = 4.5 gallons
3 + 0.75 = 3.75 gallons
This leaves the equation at:
4.5 gallons - 3.75 gallonsThis equals 3 quarts or 0.75 gallons.
A manager finds a moderate negative correlation between the number of computer sales and the number of microwave sales in his store.
Which statement is true?
The correlation is most likely a coincidence.
The correlation is most likely due to a lurking variable.
The correlation is most likely a causation.
The true statement is the correlation is most likely due to a lurking variable.
What is negative correlation?
Correlation is a statistical measure used to measure the relationship that exists between two variables. Negative correlation is when there is an inverse relationship between the two variables. If one variable increases, the other variable decreases.
Assume that the store is located near a school where the students live on an allowance. So, students do not have time to buy both computers and microwaves. When students buy computers they do not have enough money to buy microwaves. This explains the negative correlation.
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