The sample is from the right population, his customers. However, because he is surveying such a small number of people and only asking his best customers (who are probably the most satisfied, or they would not buy so much from him), the results are going to be biased, most likely positive, and not representative of his entire customer base.
No, Because, when to do some sort of analysis (such as this one), you need to take (for example) a Random sample from the population of the problem that is being analyzed.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Pete is conducting a survey to determine his customers’ overall satisfaction about the quality of his company’s products.
Let an example a Random sample from the population of the problem that is being analyzed.
In this example (problem), Pete wants to evaluate overall satisfaction of customers, so he should not send the surveys only to the customers who have purchased the largest number of items, but to the randomly selected customers, in order to obtain representative results of the overall satisfaction.
If he sends the surveys only to the customers who have bought the largest number of items, he will obtain very high satisfaction of customers, as results, of course, and this will not be representative results.
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Jane is is charge of making a banner for the basketball game this Saturday. She measures how long the banner is before painting it. She finds it measures 10 meters, which measurement did Jane find?
Answer:
The measurement which Jane finds to be 10 meters is the length of the banner.
Step-by-step explanation:
The measurement of 10 meters which Jane found after measuring how long the banner is before painting is the LENGTH of the banner.
This is clear from the unit of what she finds (meters). It only indicates the measurement of one part of the banner, even though a banner has two parts, the length and width.
It is possible to find the AREA, or PERIMETER, or LENGTH.
But what she finds is the LENGTH of the banner. If it was Area or Perimeter, the unit would have been square meters.
Answer:
length
Step-by-step explanation:
for answer above: TYSM I NEEDED THAT SO BADLY i struggled with math my entire life and hardly understand when people teach math that really helped explain that problem tysm!!!
best estimate for the quotient of 2 5/6 divided by 1/3
Answer:
the best answer for this is 8.5, if you choose to round up it would be about 9
Step-by-step explanation:
To estimate the quotient of 2 5/6 divided by 1/3, convert the mixed number to an improper fraction and multiply by the reciprocal of the divisor.
Explanation:To find the best estimate for the quotient of 2 ⅝ divided by ⅓, we can convert the mixed number to an improper fraction and then multiply by the reciprocal of the divisor. First, convert 2 ⅝ to an improper fraction: 2 x 6 + 5 = 17/6. Next, multiply 17/6 by the reciprocal of 1/3: 17/6 x 3/1 = 51/6. Simplifying the fraction gives the answer as 8 1/2. Therefore, the best estimate for the quotient is 8 1/2.
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Adam recorded the number of flower blooms on each of his ten rose bushes. 9, 10, 4, 12, 15, 17, 18, 10, 12, 13 If he combined the number of blooms into one data set, which box plot correctly displays the data? A) A B) B C) C D) D
Answer:
The correct option is;
A)
Step-by-step explanation:
The box plot diagram will be constructed as follows
From the question data we have that;
9, 10, 4, 12, 15, 17, 18, 10, 12, 13
Rearranging we have
4, 9, 10, 10, 12, 12, 13, 15, 17,18,
The minimum = 4
The maximum = 18
Median = 12
The lower quartile Q₁ = 10
The upper quartile Q₂ = 15
Therefore, the correct option for the flower blooms on Rose brushes is A.
Answer:
The box plot that correctly displays the data is A.
Correct statement, question and graph:
Adam recorded the number of flower blooms on each of his ten rose bushes.
9, 10, 4, 12, 15, 17, 18, 10, 12, 13
If he combined the number of blooms into one data set, which box plot correctly displays the data?
A)
B)
C)
D)
Source:
Previous question that can be found at brainly
Step-by-step explanation:
1. Let's order the data from smallest to largest.
4, 9, 10, 10, 12, 12, 13, 15, 17, 18
2. Let's find the median, this way:
Median = (5th number + 6th number)/2
Median = 12 + 12/2 = 24/2 = 12
3. Let's find out the quartiles.
The first quartile is the median of the data points to the left of the median.
4, 9, 10, 10, 12
Q₁ = 10
The third quartile is the median of the data points to the right of the median.
12, 13, 15, 17, 18
Q₃ = 15
The box plot that correctly displays Q₁, median and Q₃ is box plot A.
In Box B, Q₁ = 9, median = 10 and Q₃ = 14In Box C, Q₁ = 9, median = 10 and Q₃ = 12 with values from 6 to 12In Box D, Q₁ = 5, median = 9 and Q₃ = 14PLZ IF ANY1 HELPS ME ON THIS ASAP GETS 25 POINTS
1 odd number
2 prime number
3 odd number and prime number
4 none (is out of the diagram)
5 odd number and prime number
Answer:
Ok here's the answer
Step-by-step explanation:
Odd numbers are whole numbers that cannot be divided exactly into pairs. Odd numbers, when divided by 2, leave a remainder of 1. 1, 3, 5, 7, 9, 11, 13, 15 … are sequential odd numbers. Odd numbers have the digits 1, 3, 5, 7 or 9 in their ones place.
Here are the first few prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101,
so you need to put 1 in the odd number section
put 2 in the prime number section
put 3 in the middle section which is the similarities
don't put 4 anywhere because it's neither an odd number nor a prime number
put 5 in the middle section which is the similarities
Solve this system of equations using substitution
y = - 4
x + 2y = 10
Step 1: Substitute for y in the second equation. Which is
the resulting equation?
Answer:
x + 2(-4) = 10
x - 8 = 10
x = -18
y = -4
(-18, -4)
Step-by-step explanation:
Answer:
x + 2(-4) = 10
Step-by-step explanation:
Substituting -4 for y in the second equation results in x + 2(-4) = 10. This simplifies to x - 8 = 10 and then x = 18.
Please, when the problem statement includes possible answer choices, share them.
The sound intensity of rustling leaves is 100 times the reference intensity use your graph to determine the sound intensity of wrestling we use in the decibels
We can begin by noting a few things:
• dB represents the sound intensity in decibels
• I represents intensity
• I0 represents reference intensity
Assuming the reference intensity (I0) is the base level of hearing represented by the equation 1 • 10^(-12) watts per meter^2, we can incorporate 100 into the equation.
If the sound intensity of rustling leaves (I) is 100 times the reference intensity (I0), we can set up an equation to solve:
I = 100 • 10^(-12)
Now to calculate the intensity of rustling leaves in decibels:
dB = 10 • log10(100 • (1 • 10^(-12)) / (1 • 10^(-12)))
dB = 10 • log10(100) = 10 • 2 = 20 dB
Therefore, the sound intensity of rustling leaves is 20 decibels.
Nathan read 2 books in 10 months. What was his rate of reading in books per month
Step-by-step explanation:
Nathan read 2 books in 10 months.
The time taken to complete 1 book = [tex]\frac{10}{2}[/tex] = 5 months
To complete 1 book it takes 5 months.
The rate of reading a book per month = [tex]\frac{1}{5}[/tex] = 20%
Two apples and five bananas cost £4.20
Three apples and seven bananas cost £5.95
Work out the cost of an apple and the cost of a banana
The cost of an apple is 0.7 dollars and the cost of a banana is 0.35 dollars.
What is a linear equation?A linear equation is an algebraic equation of degree one. In general, the variable or the variables(in the case of a linear equation in two variables) the variables are x and y.
Given, Two apples and five bananas cost £4.20.
Assuming no. of apples to be x and no. of bananas to be y.
∴ 2x + 5y = 4.20...(i) and,
Three apples and seven bananas cost £5.95.
∴ 3x + 7y = 5.95...(ii)
Now multiplying eqn(i) by 3 and eqn(ii) by 2 to cancel out x in both equations.
So, 6x + 15y = 12.6...(iii) and 6x + 14y = 11.9...(iv)
Subtracting eqn(iv) from eqn(iii) we get y = 0.7 and substituting value of y in eqn(iv) we get x = 0.35
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From a standard deck of cards, what is the probability of choosing...
a) a red and then a club without replacement?
b) a 3, then a 7, then a face card without replacement?
c) a diamond, then a heart, then a black card without replacement?
d) a number card then a face card with replacement?
You have to answer a,b,c, and d to get the full amount of 50 points!!! good luck!
Answer:
a) 13/102
b) 24/16575
c) 169/5100
d) 30/169
Step-by-step explanation:
a) 26/52 × 13/51
13/102
b) 4/52 × 4/51 × 12/50
1/13 × 4/51 × 6/25
24/16575
c) 13/52 × 13/51 × 26/50
1/4 × 13/51 × 13/25
169/5100
d) 40/52 × 12/52
10/13 × 3/13
30/169
Answer:
13/102
8/5525
169/5100
10/39
Step-by-step explanation:
a. there are 26 red cards in a standard deck and 13 clubs
P (red) = 26/52 =1/2
Then we keep the card, so there are only 51 cards left
P ( club) = 13/51
P (red, no replacement, club) = P (red) * P(club) = 1/2 *13/51 = 13/102
b. there are 4 three's in a standard deck 4 7's 12 face cards, assuming an A is not a face card (jack , queen king are face cards, 1 of each suit 3*4 =12)
P (3) = 4/52 =1/13
Then we keep the card, so there are only 51 cards left
P (7) = 4/51
Then we keep the card, so there are only 50 cards left
P (face card) = 12/50 = 6/25
P (3, no replacement, 7,no replacement, face)
= P (3) * P(7)* P (face) = 1/13 *4/51*6/25 =8/5525
c. there are 13 diamonds in a standard deck 13 hearts and 26 black cards
P (diamond) = 13/52 =1/4
Then we keep the card, so there are only 51 cards left
P (heart) = 13/51
Then we keep the card, so there are only 50 cards left
P (black) = 26/50 = 13/25
P (diamond, no replace, heart,no replace, black)
= P (diamond) * P(heart)* P (black) = 1/4*13/51*13/25 =169/5100
d assuming an aces is a number card
there are 40 number cards and 12 face cards
P (number) = 40/52 =10/13
Then we keep replace card, so there are 52 cards left
P ( face) = 12/52=1/3
P (number, replace, face) = 10/13 * 1/3 =10/39
4. Entomologists introduce 20 of one
variety of insect to a region and determine
that the population doubles every 6
hours.
part A Write an equation to model
this situation. Assume that the soulation
is continuously growing, and let t Represent
days.
part B What will the population be in 10 days?
part C How long will it take until the population reaches 100000?
Answer:
This number can be found using the Rule of 70, which describes the formula dt = 70 / r, where dt is the doubling time, and r is the annual rate of growth.
Step-by-step explanation:
24/6 = 4
20 x 2 = 40 x 2 = 80 x 2 = 160 x 2 = 320
20 ---> 320 in the first day.
Keep doing this equation. Multiply each day's end result by 2 four times for 9 more days.
[related to solved problem #3] suppose that andy sells basketballs in the perfectly competitive basketball market. his output per day and his costs are as follows: output per day total cost variable cost average total cost average variable cost marginal cost 0 $10.00 $0 -- -- -- 1 15.00 5 $15.00 $5.00 $5.00 2 17.50 7.50 8.75 3.75 2.50 3 22.50 12.50 7.50 4.17 5.00 4 30.00 20.00 7.50 5.00 7.50 5 40.00 30.00 8.00 6.00 10.00 6 52.50 42.50 8.75 7.08 12.50 7 67.50 57.50 9.64 8.21 15.00 8 85.00 75.00 10.63 9.38 17.50 9 105.00 95.00 11.67 10.56 20.00 suppose the equilibrium price of basketballs is $2.50. in the short run, how many basketballs will andy produce? 22 (enter a whole number).
In a perfectly competitive market, Andy will produce two basketballs in the short run, as this is the quantity at which the marginal cost equals the equilibrium price of $2.50.
Explanation:In a perfectly competitive market, a firm like Andy's basketball business should continue to produce and sell its product as long as the marginal cost (MC) of producing an additional unit is less than or equal to the market price, and stop at the point where MC equals the market price. Given that the equilibrium price of basketballs is $2.50, and looking at the provided information where various costs are outlined, we can determine how many basketballs Andy should produce.
Andy should look at the marginal cost for each output level and compare it to the equilibrium price. He will produce up to the point where marginal cost equals the equilibrium price. The table shows the last unit he should produce at a marginal cost of $2.50 is the second basketball. Producing the third basketball would have a marginal cost of $5.00, which is higher than the equilibrium price, indicating that producing the third basketball would lead to a loss. Therefore, in the short run, Andy will produce two basketballs per day.
help with properties of rhombus,rectangles and squares
Answer:
a = 3
b = 4
c = 5
Step-by-step explanation:
This is a rhombus. A property of a rhombus is that their diagonals perpendicularly bisect each other. In other words, if the point in the center is A, then HA = MA and EA = OA. So: 3 = a and 4 = b.
Since angle HAO forms a right angle, we can use the Pythagorean Theorem to say that HA^2 + AO^2 = OH^2: 3^2 + 4^2 = 9 + 16 = 25.
OH^2 = 25
OH = 5
Hope this helps!
Answer:
a = 3
b = 4
c = 5
Step-by-step explanation:
Rhombus has all sides equal
c = EH = sqrt(4² + 3²) = 5
Diagonals are Perpendicular bisectors of each other
b = 4
a = 3
Sarah saved $15 buying the dress
at a 20%-off sale. What was the
regular price of the dress?
Answer:
$18
Step-by-step explanation:
since she saved 20% you turn the percentage into a decimal which is .20 then multiply it by 15 because that's how much she saved and you get $3 which you add to $15 and you get the regular price which is $18
Jill spent of her money on a new shirt end of her Money on pants with a fraction of her money has she spent money on pants what fraction of her money has she spent
Answer:
This means Jill has spent exactly half of her money and she has exactly half of her money too left.
The fraction of her money she has spent = (1/2)
Step-by-step explanation:
The total fraction of money Jill has spent = (fraction of money she spent on a new shirt) + (fraction of money she spent on pants) = (1/6) + (1/3) = (3/6) = (1/2)
This means Jill has spent exactly half of her money and she has exactly half of her money too left.
Hope this Helps!!!
Seven people went to the movies.
The number of adults was one more
than the number of children. How
many adults and children went to the
movies?
Answer:
4 adults 3 children
Step-by-step explanation:
Final answer:
To solve the problem, we set c as the number of children, and deduced that a = c + 1 for the number of adults, leading to 3 children and 4 adults going to the movies.
Explanation:
The question is about solving a basic algebra problem involving a small group of people going to the movies. To find out how many adults and children went to the movies, we can set up an equation based on the information provided. Let c represent the number of children. Since the number of adults is one more than the number of children, we have a = c + 1 for the number of adults. Together, they total seven people, so we can write the equation c + (c + 1) = 7. Simplifying this equation gives us 2c + 1 = 7. Solving for c, we subtract 1 from both sides to get 2c = 6, and then divide by 2 to find c = 3. This means there were 3 children. Since there is one more adult than children, a = 3 + 1 = 4, which gives us 4 adults. Therefore, there were 3 children and 4 adults that went to the movies.
Express the square root 75 in
simplest radical form.
The square root 75 in simplest radical form will be [tex]5\sqrt{3}[/tex].
We have to Express the square root 75 in simplest radical form.
We know that An expression that uses a root, such as a square root, cube root is known as a radical notation.
First find the factors of 75.
The factors of 75 will be,
[tex]3\times5\times5[/tex].
Now,
[tex]\sqrt{75} =\sqrt{3\times5\times5}[/tex]
since 5 is in pair under the root so it will come out from the root,
[tex]\sqrt{75}=5\sqrt{3}[/tex]
Thus the simplified radical form is [tex]5\sqrt{3}[/tex].
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When you start choose a pokemon starter in this game
there your choices are: Bulbasaur (green one), Squirtle
(blue one), & Charmander (red one). If you chose one
at random, what would be the probability of choosing
Squirtle?
Answer:
1/3 or 33.3%
Step-by-step explanation:
theres 3 total, and one squirtle so it's 1/3
Find the expression for the area of the figure. Give your answer as a simplified radical.
Answer:
D
Step-by-step explanation:
Area of rectangle= length × breadth
Area of figure
[tex] = ( \sqrt{15x}) ( \sqrt{10x} ) \\ = \sqrt{(10x)(15x)} \\ = \sqrt{150 {x}^{2} } \\ = \sqrt{6(25 {x}^{2}) } \\ = (\sqrt{6} )( \sqrt{( {5x})^{2} } ) \\ = ( \sqrt{6} )(5x) \\ = 5x \sqrt{6} [/tex]
Help me prove that sec(a-b) =seca*secb/1+tana*tanb
Use:
[tex] sec a=\frac{1}{cos a}[/tex]
Answer:
See below.
Step-by-step explanation:
Write the sec's as 1 / cos and the tan's as sin / cos
I will write sin as s and cos as c:
Left side = 1 / ( cos)a - b) = 1 / (ca cb + sa sb)
Right side = 1 / ( ca cb ( 1 + sa sb / ca cb))
= 1 / ( ca cb * ( ca cb + sa sb) / ca cb)
The 'ca cb' cancels out so
Right side = 1 / (ca cb + sa sb) = left side..
A baby gains 11 pounds in its firat year of life. The baby gained 4 pounds during the first four months and
second four months. How much did the baby gain in the last four months?
3 1/4 pounds
3 1/2 pounds
4 pounds
5 pounds
Answer:
I think it's 3.5
Step-by-step explanation:
Distributive property for
14x+21y+7z
Answer:
7(2x+3y+z)
Step-by-step explanation:
Find the area of the triangle below.
A.√3/2
B.√3
C.2√3
D.2√2
Answer: A
A= 1/2 x b x h
1/2(1)(1 sq rt 3)= .866
Sq rt 3 /2 = .867
Step-by-step explanation:
Original price of a book: $90.50
Tax: 4%
Answer:
The tax is $3.62
So the price now is $94.12
Answer:
$94.12
Step-by-step explanation:
If the original price is $90.5 then you would have to multiply
90.50*104%,you multiply 104% because 100% is sopposed to be the original price and the tax adds up the price by 4% so,
100%+4%=104%
104%*90.50=$94.12
Find the radius r of the sphere.
Given:
The volume of the sphere = 12348π in³
To find the radius of the sphere.
Formula
The volume of a sphere of radius r is
[tex]V = \frac{4}{3} \pi r^{3}[/tex]
According to the problem,
[tex]\frac{4}{3} \pi r^{3} = 12348\pi[/tex]
Eliminating π from both the side.
or, [tex]\frac{4}{3} r^{3}= 12348[/tex]
or, [tex]r^{3}=\frac{(12348)(3)}{4}[/tex]
or, [tex]r^{3}=9641[/tex]
or, [tex]r=\sqrt[3]{9261}[/tex]
or, [tex]r=21[/tex]
Hence,
The radius of the sphere is 21 inches.
Answer:
21 inches
Step-by-step explanation:
The volume of a sphere is given by
V = 4/3 pi r^3
We know the volume
12348 pi = 4/3 pi r^3
Divide each side by pi
12348 pi/pi = 4/3 pi r^3 /pi
12348 = 4/3 r^3
Multiply each side by 3/4
12348 *3/4 = 4/3*3/4 r^3
9261 = r^3
Take the cubed root of each side
9261^ (1/3 ) = r^3 ^1/3
21 =r
¿Cuál es el valor de la razón de cambio cuando tenemos un vaso con agua a temperatura ambiente al congelador por 15 minutos?
Answer: [tex]2 \°C/min[/tex]
Step-by-step explanation:
The rate of change is a measure in which one variable is modified in relation to another. In this case we have the variables:
Temperature in [tex]\°C[/tex]
Time in [tex]min[/tex]
Now, to calculate the rate of change, we have to divide one variable by the other. In this case the change in temperature [tex]\Delta T[/tex] divided by the time variation [tex]\Delta t[/tex].
Hence, assuming the ambient temperature of the glass is [tex]30 \°C[/tex] and the elapsed time [tex]15 min[/tex] we have:
[tex]\frac{\Delta T}{\Delta t}=\frac{30 \°C}{15 min}=2 \frac{\°C}{min}[/tex]
PLEASE HELP!!! SHOW ALL YOUR WORK WORTH 30 Points!!!!
Answer:
A
1) horizontal translation of 2 units towards left
2) vertical translation of 10 units upwards
B)
1) k = -2
2) k = 10
C)
1) g(x) = f(x + 2)
2) g(x) = f(x) + 10
Step-by-step explanation:
A & B)
1) horizontal translation of 2 units towards left
2) vertical translation of 10 units upwards
C)
1) g(x) = f(x + 2)
2) g(x) = f(x) + 10
1. What is 26% written as a decimal?
Answer:
.26 = 26% hope this helps! :)
Step-by-step explanation:
.26
100 = 1.00
26 = .26
you just move the decimal point over 2
Answer:
26% = 0.26 in decimal form
Step-by-step explanation:
You just put a 0. in front of it,
take .26
Then 100 = 1.00
and 26 = .26
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emma will roll two number cubes labeled 1 through 6. She will record the sum of the two numbers after each roll. She will roll the two cubes 540 times. How many times should Emma expect the sum to equal 5?
Answer:
75 times
Step-by-step explanation:
First of all let's ook at the 36 possible outcomes and their sums.
2=1,1
3=1,2 2,1
4=1,3 ; 2,2 ; 3,1
5=1,4 ; 2,3 ; 3,2 ; 4,1
6=1,5 ; 2,4 ; 3,3 ; 4,2 ; 5,1
7=1,6 ; 2,5 ; 3,4 ; 4,3 ; 5,2 ; 6,1
8=2,6 ; 3,5 ; 4,4 ; 5,3 ; 6,2
9=3,6 ; 4,5 ; 5,4 ; 6,3
10=4,6 ; 5,5 ; 6,4
11=5,6 ; 6,5
12=6,6
Looking at the above, there are 4 sums equal to 5 out of a total of 36 sums.
Thus, probability of getting a sum equal to 5 is;
P(5) = 5/36
Now,since the cubes are rolled 540 times, number of times a sum equal to 5 will appear will be;
(5/36) x 540 = 75 times
What is the area of this composite figure?
A figure is comprised of 1 rectangle and 2 triangles. The rectangle has a length of 16 centimeters and width of 10 centimeters. Both triangles have a base of 16 centimeters and height of 6 centimeters.
96 centimeters squared
160 centimeters squared
208 centimeters squared
256 centimeters squared
Answer:
256 cm squared
Step-by-step explanation:
Just did the Quiz, hope this helps!
The area of this composite figure is 256 centimeters squared, the correct option is D.
How to calculate the surface area of a composite figure?Surface area are derived for some standard shapes like circle, triangle, parallelogram, rectangle, trapezoid, etc.
When some shape comes which isn't standard figure, then we find its area by slicing it (virtually, like by drawing lines) in standard shapes. Then we calculate those composing shapes' area and sum them all.
Thus, we have:
[tex]\text{Area of composite figure} = \sum (\text{Area of composing figures})[/tex]
That ∑ sign shows "sum"
We are given that;
Measure of rectangle = 16x10
Measure of triangle base of 16 centimeters and height of 6 centimeters.
Now,
The area of the composite figure can be calculated by adding the area of the rectangle and the area of the two triangles.
The area of the rectangle is 16 * 10 = 160 cm^2. The area of one triangle is 1/2 * 16 * 6 = 48 cm^2. The area of two triangles is 2 * 48 = 96 cm^2.
160 + 96 = 256 cm^2.
Therefore, by the given composite figure the answer will be 256 centimeters squared.
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the common ratio in a geometric series is 4 and the first term is 3 find the sum of the first 8 terms in the series
Answer:It’s b
Step-by-step explanation:
Girl it’s sum
Answer: 65535
Step-by-step explanation: