Answer:
a: sample mean: 130.2 pounds
This is not the population mean
Step-by-step explanation:
To find the mean weight of the sample, add up all the values and divide by the total number of values entered. In this case, 10, so we have...
mean: (136 + 99 + 118 + 129 + 125 + 170 + 130 + 128 + 120 + 147)/10 =
1302/10 = 130.2
This is not the population mean. It is the mean of the sample. We would have to know more information to make a conjecture about the population mean.
Final answer:
The population mean of the students' weights is determined by summing all the weights and dividing by the number of students, resulting in 130.2 pounds.
Explanation:
To find the population mean (denoted as μ), we add up all the weights of the ten students in the population and divide it by the total number of students. Let's do the calculation:
The weights of the students are 136, 99, 118, 129, 125, 170, 130, 128, 120, and 147 pounds.
The sum of these weights is 136 + 99 + 118 + 129 + 125 + 170 + 130 + 128 + 120 + 147 = 1302 pounds.
Since there are 10 students in the population, we divide the total weight by 10 to find the mean:
μ = ΣX / N = 1302 / 10 = 130.2 pounds
Therefore, the population mean (μ) is 130.2 pounds.
A scale on a map shows that 2.5 centimeters represents 15 kilometers. What number of actual kilometers are represented by 17.5 centimeters on the map?
Answer:
105
Step-by-step explanation:
to get this you must first divide 17.5 by 2.5 to see how many times to multiply 15 by 2.5
sorry if it does not make scence
Graph the relation and its inverse. Use open circles to graph the points of the inverse. x –3 4 6 9 y 5 6 –9 –10
Answer:
See attached picture.
Step-by-step explanation:
Graph the function as (x,y) points.
(-3,5)
(4,6)
(6,-9)
(9,-10)
These are graphed in black on the picture.
To graph the inverse, switch the points from (x,y) to (y,x).
(5,-3)
(6,4)
(-9,6)
(-10,9)
These are graphed in red on the picture.
Identify the domain and range of the following graph.
domain and range are both infinite
What is the volume of this Hamsta' snacks box with a width of 1.5 inches,a length of 2.5 inches,and a height of 4 inches
Answer: 15 cubic inches.
Step-by-step explanation:
The volume of rectangular prism is given by :-
[tex]V=l\times w\times h[/tex], where l is length , w is width and h is height.
Given : Hamsta' snacks box has a width of 1.5 inches,a length of 2.5 inches,and a height of 4 inches.
Then, the volume of the box will be :-
[tex]V=2.5\times 1.5\times 4=15\text{ cubic inches}[/tex]
Hence, the volume of this Hamsta' snacks box is 15 cubic inches.
An 8-pound boneless ham contains 36 servings of meat. How many servings would an 2 pound ham make? Show your work using equivalent ratios.
Answer:
9 servings of meat.
Step-by-step explanation:
The first ratio you are given is 8:36. You are trying to figure out what 2:__ is.
8/36 x 2/X
Multiply 2 x 36 and get 72. Now divide 72 by 8 to get 9.
Answer:
The answer really is 9 servings of meat.
Step-by-step explanation:
I had the same question and I got it right...but mine said: Write a proportion that could be used to solve this problem. Do not solve it.
Jason has two bags with 6 tiles each.
Without looking, Jason draws a tile from the first bag and then a tile from the second bag. What is the probability of Jason drawing an even tile from the first bag and an even tile from the second bag?
Answer:
1/4.
Step-by-step explanation:
I am assuming that there are 3 even and 3 odd tiles in each bag.
Probability( drawing an even tile form one bag) = 3/6 = 1/2.
The probability of drawing an even from the first and an even from the second = 1/2 * 1/2 = 1/4 (answer).
The individual probabilities are multiplied because the 2 events are independent.
Answer:
9/36
Step-by-step explanation:
What is the area of this triangle?
Round to the nearest hundredth.
Answer: 2.94 ft²
Step-by-step explanation:
Observe the figure attached:
The line LM divide the triangle into two right triangles.
Find the heigh "h" as following:
[tex]sin\alpha=\frac{opposite}{hypotenuse}\\\\sin(40\°)=\frac{h}{2.7}\\\\h=(2.7)(sin(40\°))\\h=1.73ft[/tex]
Apply the formula for calculte the area of a triangle:
[tex]A=\frac{Bh}{2}[/tex]
Where B (B=3.4 ft) is the base and h is the height (h=1.73ft)
Then:
[tex]A=\frac{(3.4ft)(1.73ft)}{2}=2.94ft^2[/tex]
Lila ate 1/4of her sandwich.Alexis are 3/4 of her sandwich. How much more of the sandwich did Alexis eat than lila
Answer:
2/4
Step-by-step explanation:
1/4 = 0.25
3/4 = 0.75
0.75 - 25 = 0.50
0.50 is your answer
How many square feet will we need for this hole that has 4 feet 12 feet 3 feet 2 feet 1 feet 2 feet
I think you're answer is five hundred seventy six
Regard y as the independent variable and x as the dependent variable and use implicit differentiation to find dx/dy. x5y2 − x4y + 2xy3 = 0
Answer:
dx/dy = (x^4 - 2x^5y - 6xy^2) / (5x^4y^2 - 4x^3y + 2y^3).
Step-by-step explanation:
x^5y^2 − x^4y + 2xy^3 = 0
Applying the Product and Chain Rules:
y^2*5x^4*dx/dy + 2y*x^5 - (y*4x^3*dx/dy + x^4) + (y^3* 2*dx/dy + 3y^2*2x) =0
Separating the terms with derivatives:
y^2*5x^4*dx/dy - y*4x^3*dx/dy + y^3* 2*dx/dy = x^4 - 2y*x^5 - 3y^2*2x
dx/dy = (x^4 - 2x^5y - 6xy^2) / (5x^4y^2 - 4x^3y + 2y^3)
Answer:
[tex]\frac{dx}{dy}=\frac{-2x^5y+x^4-6xy^2}{5x^4y^2-4x^3y+2y^3}[/tex]
Step-by-step explanation:
The given equation is
[tex]x^5y^2-x^4y+2xy^3=0[/tex]
Differentiate with respect to y.
[tex]\frac{d}{dy}(x^5y^2)-\frac{d}{dy}(x^4y)+\frac{d}{dy}(2xy^3)=0[/tex]
Using product rule we get
[tex]x^5\frac{d}{dy}(y^2)+y^2\frac{d}{dy}(x^5)-x^4\frac{d}{dy}(y)-y\frac{d}{dy}(x^4)+2x\frac{d}{dy}(y^3)+2y^3\frac{d}{dy}(x)=0[/tex] [tex](fg)'=fg'+gf'[/tex]
[tex]x^5(2y)+y^2(5x^4\frac{dx}{dy})-x^4(1)-y(4x^3\frac{dx}{dy})+2x(3y^2)+2y^3\frac{dx}{dy}=0[/tex]
[tex]2x^5y+5x^4y^2\frac{dx}{dy}-x^4-4x^3y\frac{dx}{dy}+6xy^2+2y^3\frac{dx}{dy}=0[/tex]
Isolate [tex]\frac{dx}{dy}[/tex] terms on left side.
[tex]5x^4y^2\frac{dx}{dy}-4x^3y\frac{dx}{dy}+2y^3\frac{dx}{dy}=-2x^5y+x^4-6xy^2[/tex]
[tex](5x^4y^2-4x^3y+2y^3)\frac{dx}{dy}=-2x^5y+x^4-6xy^2[/tex]
Isolate [tex]\frac{dx}{dy}[/tex] term.
[tex]\frac{dx}{dy}=\frac{-2x^5y+x^4-6xy^2}{5x^4y^2-4x^3y+2y^3}[/tex]
Therefore the value of [tex]\frac{dx}{dy}[/tex] is [tex]\frac{-2x^5y+x^4-6xy^2}{5x^4y^2-4x^3y+2y^3}[/tex].
Sally is a sales manager.She makes $73,000 a year.Sally has worked hard all year and receives a 6% raise.How much will sally make next year?
Answer:
$77,380
Step-by-step explanation:
If she gets a 6% raise next year she will make 106% of what she makes this year.
106% is 1.06 as a decimal. Multiply her salary by 1.06 to find out how much she will make next year...
$73,000(1.06) = $77,380
Answer:
77,380
Step-by-step explanation:
divide 73000 by 100% and you get 730, then you multiply it by 6 since you need a 6% raise. once you get this value, you simply add it to the 73000 and you get the answer
The two solids are similar and the ratio between the lengths of their edges is 2:7 what is the ratio of their surface areas?
Answer:
The ratio of their surface areas is [tex]\frac{4}{49}[/tex]
Step-by-step explanation:
we know that
If two figures are similar, then the ratio of its corresponding sides is equal and this ratio is called the scale factor
In this problem the scale factor is equal to the ratio [tex]\frac{2}{7}[/tex]
and
Remember that
If two figures are similar, then the ratio of its surface areas is equal to the scale factor squared
therefore
In this problem the ratio of their surface areas is [tex](\frac{2}{7})^{2}=\frac{4}{49}[/tex]
Final answer:
The ratio of the surface areas of two similar solids with a linear dimension ratio of 2:7 is 4:49.
Explanation:
The question deals with the concept of geometric similarity and the ratio of surface areas for similar solids. When two solids are similar, the ratio of their surface areas is the square of the ratio of their corresponding linear dimensions. Therefore, if the ratio between the lengths of their edges is 2:7, then the ratio of their surface areas would be the square of this ratio, which is (22):(72) or 4:49.
53.4*16.2 please please
Answer:
865.08
Step-by-step explanation:
✯Hello✯
↪ The answer is 865.08
↪ Times both of them by 10 so they are whole numbers
↪ Then it will be 534 x 162 = 86508
↪ Then divide by 100
❤Gianna❤
To multiply 53.4 and 16.2, calculate 534 * 162, then adjust the result by placing the decimal point two places from the right to get 865.08. This gives the final product of 865.08.
To find the product of 53.4 and 16.2, follow these steps:
First, ignore the decimal points and multiply the numbers as if they were whole numbers:534 * 162 = 86508Next, count the total number of decimal places in the original numbers.Here, 53.4 has one decimal place and 16.2 also has one decimal place, making a total of two decimal places.
Place the decimal point in the product, moving it two places from the right:86508 becomes 865.08Therefore, 53.4 * 16.2 equals 865.08.
Need help with this
Answer:
[tex]\large\boxed{\tan x(\cot x-\cos x)=1-\sin x}[/tex]
Step-by-step explanation:
[tex]Use\\\\(\tan x)(\cot x)=1\\\\\tan x=\dfrac{\sin x}{\cos x}\\\\\text{distributive property:}\ a(b-c)=ab-ac\\======================\\\\\tan x(\cot x-\cos x)=(\tan x)(\cot x)-(\tan x)(\cos x)\\\\=1-\left(\dfrac{\sin x}{\cos x}\right)(\cos x)=1-\sin x[/tex]
Simplify the expression (Picture provided)
Answer:
b. secx
Step-by-step explanation:
We have given a trigonometric expression.
csc(x)/cot(x)
We have to simplify it.
Since we know that
csc(x) is reciprocal to sin(x).
cscx = 1/sinx
cot(x) is ratio of cos(x) and sin(x).
cotx = cosx/sinx
Then, given expression becomes,
[tex]\frac{1/sinx}{cosx/sinx}[/tex]
[tex]\frac{1}{sinx}[/tex] × [tex]\frac{sinx}{cosx}[/tex]
[tex]\frac{1}{cosx}[/tex]
csc(x)/cot(x) = secx
Given: Circle X with a Radius r and circle Y with radius s Prove: Circle x is similar to circle y
Answer:
Step-by-step explanation:
To prove that Circle X is similar to Circle Y, we need to show that their corresponding angles are equal and their corresponding sides are proportional. We can compare the ratios of the circumference to the diameter for both circles, which are equal, implying that the angles in the two circles are equal and Circle X is similar to Circle Y.
Explanation:To prove that Circle X is similar to Circle Y, we need to show that their corresponding angles are equal and their corresponding sides are proportional. Since the radii of the two circles are different (r for Circle X and s for Circle Y), we cannot directly compare their sides. However, we can compare their ratios. If we divide the circumference of Circle X by its diameter, we get the value of pi (π), which is approximately 3.14. Similarly, if we divide the circumference of Circle Y by its diameter, we would also get pi (π). This means that the ratios of the circumference to the diameter for both circles are equal, which implies that the angles in the two circles are equal and therefore, Circle X is similar to Circle Y.
A set of numbers is shown below:
{0, 0.8, 1, 3, 6}
Which of the following shows all the numbers from the set that make the inequality 7x + 1 ≥ 8 true?
{1, 3, 6}
{3, 6}
{0, 0.8, 1}
{0, 0.8}
Answer:
I'm pretty sure it'd be set {3,6}
Answer:
A
Step-by-step explanation:
How dose finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation.
Help please!!!!!!!!!!!!
Answer:
[tex]\log_{9}{\dfrac{13}{x}}=\log_{9}{\boxed{13}}-\log_{9}{x}[/tex]
Step-by-step explanation:
The rule is ...
log(a/b) = log(a) -log(b) . . . . all logs to the same base
Then for a/b = 13/x, this becomes ...
log(13/x) = log(13) -log(x)
If the base of logarithms is 9, then this is ...
log9(13/x) = log9(13) -log9(x)
help fast, please
A. Expand the following and state the Law that is indicated.
1. log4(3x)
2. log3(27/x)
3. log4(x5)
ANSWER
1.
[tex]log_{4}(3x) = log_{4}(3) + log_{4}(x)[/tex]
2.
[tex]log_{3}( \frac{27}{x} ) = 3 - log_{3}(x)[/tex]
3.
[tex]log_{4}( {x}^{5} ) = 5 log_{4}(x) [/tex]
EXPLANATION
1. The given logarithmic expression is
[tex] log_{4}(3x) [/tex]
Use the product rule:
[tex] log_{a}(mn) = log_{a}(m) + log_{a}(n) [/tex]
We apply this rule to obtain:
[tex]log_{4}(3x) = log_{4}(3) + log_{4}(x)[/tex]
2. The given logarithmic expression is
[tex] log_{3}( \frac{27}{x} ) [/tex]
We apply the quotient rule:
[tex]log_{a}( \frac{m}{n} ) = log_{a}(m) - log_{a}(n) [/tex]
This implies that;
[tex]log_{3}( \frac{27}{x} ) = log_{3}(27) - log_{3}(x) [/tex]
We simplify to get;
[tex]log_{3}( \frac{27}{x} ) = log_{3}( {3}^{3} ) - log_{3}(x) [/tex]
Apply the power rule:
[tex] log_{a}( {m}^{n} ) = n log_{a}(m) [/tex]
[tex]log_{3}( \frac{27}{x} ) = 3 log_{3}( {3}) - log_{3}(x) [/tex]
simplify;
[tex]log_{3}( \frac{27}{x} ) = 3 (1) - log_{3}(x) [/tex]
[tex]log_{3}( \frac{27}{x} ) = 3 - log_{3}(x)[/tex]
3. The given logarithmic expression is;
[tex] log_{4}( {x}^{5} ) [/tex]
Apply the power rule of logarithms.
[tex]log_{a}( {m}^{n} ) = n log_{a}(m) [/tex]
This implies that,
[tex]log_{4}( {x}^{5} ) = 5 log_{4}(x) .[/tex]
Alma's math teacher said that there was 10 factorial (10!) possible different orders in which the problems on the next exam could be arranged. What does 10! mean?
A- 10^100
B- 10(9+8+7+6+5+4+3+2+1)
C- 10(9)(8)(7)(6)(5)(4)(3)(2)(1)
D- 10,000,000,000
Answer:
The 10! means 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 ⇒ answer C
Step-by-step explanation:
* Lets explain how to solve the problem
- Factorial number means a number which is multiply itself to its
decreasing numbers
- In mathematics, the factorial of a non-negative integer n, denoted by
n! is the product of all positive integers less than or equal to n
- That means n! = n × (n-1) × (n-2) × (n-3) × ...........× 1
- Ex: 5 ! = 5 × 4 × 3 × 2 × 1 = 120
* Lets solve the problem
- There was 10 factorial 10! possible different orders
- The meaning of 10! is the multiplication of all the numbers from
10 to 1
∴ 10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
* The 10! means 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
The correct choice is C, 10(9)(8)(7)(6)(5)(4)(3)(2)(1). The expression 10! (ten factorial) means the product of all integers from 1 to 10, which is calculated as 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1.
Therefore, the correct choice is C. For example, 4! equals 4 × 3 × 2 × 1 = 24.
The expression 10!, read as 'ten factorial', represents the product of all integers from 1 to 10. It is calculated as follows:
10! = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1
So, the correct choice for what 10! means is:
C- 10(9)(8)(7)(6)(5)(4)(3)(2)(1)
For example, the factorial of 4 is calculated as 4! which equals 4 × 3 × 2 × 1 = 24.
Similarly, for 10!, you multiply all integers from 10 down to 1.
What is the point-slope form of a line with slope 6 that contains the same point (1,2)
The point-slope form of the line with slope 6 that contains the point (1, 2) is y - 2 = 6(x - 1).
The point-slope form of a line is given by:
[tex]\[ y - y_1 = m(x - x_1) \][/tex]
where m is the slope of the line and [tex]\( (x_1, y_1) \)[/tex] is a point on the line.
Given that the slope m = 6 and the point [tex]\( (x_1, y_1) = (1, 2) \)[/tex], we can substitute these values into the point-slope form:
y - 2 = 6(x - 1)
So, the point-slope form of the line with slope 6 that contains the point (1, 2) is y - 2 = 6(x - 1).
In the figure, ΔGTS is similar to ΔFHS. What's the length of side GT?
A. 13.8
B. 12.8
C. 8.4
D. 2.7
[tex]GT=\frac{HF.TS}{SF}=\frac{4.8\times 21}{12}=8.4 [/tex]
Marcus needs 108 inches of wood to make a frame how many feet of wood Does Marcus need for the frame
Answer: 9 feet.
Step-by-step explanation: The formula to convert inches to feet is to divide the amount in inches by 12. 108/12 = 9.
30 points !!! Polygon ABCDE is reflected to produce polygon A?B?C?D?E?. What is the equation for the line of reflection? a. Y = 0 b. X = 0 c. X = 2 d. Y = 1
The equation for the line of reflection is x = 0 if the polygon ABCDE is reflected to produce polygon A'B'C'D'E'
What is geometric transformation?It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.
We have a polygon ABCDE is reflected to produce polygon A'B'C'D'E' in the picture.
As we know, the reflection is the geometric transformation which create a mirror image of the object, but size or shape does not change.
The y-axis is the axis of reflection in this case.
The equation for the y-axis is x = 0
Thus, the equation for the line of reflection is x = 0 if the polygon ABCDE is reflected to produce polygon A'B'C'D'E'
Learn more about the geometric transformation here:
brainly.com/question/16156895
#SPJ2
Bob has 3 packs of model cars. He gave away 4. He has 11 left. How many were in a pack
Answer:15
Step-by-step explanation:he has 3 packs of model cars. 15 is in each pack if he gave away four he would have 11 left.
What is measure of angle A?
Enter your answer as a decimal in the box. Round only your final answer to the nearest hundredth.
Answer:
The measure of the angle A is [tex]53.13\°[/tex]
Step-by-step explanation:
we know that
In the right triangle ABC
The tangent of angle A is equal to the opposite side to the angle A divided by the adjacent side to angle A
so
[tex]tan(A)=\frac{BC}{AB}[/tex]
substitute
[tex]tan(A)=\frac{4}{3}[/tex]
[tex]<A=arctan(\frac{4}{3})=53.13\°[/tex]
Jenny has two congruent kleenex boxes. The first box has a volume of 72 in2, a length of 3 inches and a width of 4 inches. What is the height of the second box?
Answer:
The height of the second box is [tex]6\ in[/tex]
Step-by-step explanation:
we know that
If the two boxes are congruent
then
The volume of the first box is equal to the volume of the second box
The length of the first box is equal to the length of the second box
The width of the first box is equal to the width of the second box
The height of the first box is equal to the height of the second box
so
Find the height of the first box
Remember that
The volume of the box is equal to
[tex]V=LWH[/tex]
substitute the values and solve for H
[tex]72=(3)(4)H[/tex]
[tex]H=72/(12)=6\ in[/tex]
Help please ! (Photo attached)
Answer:
30.9 ft
Step-by-step explanation:
R is inversely proportional to A R = 12 when A = 1.5 a) Work out the value of R when A = 5 b) Work out the value of A when R = 9
Answer:
a) R = 3.6
b) A = 2
Step-by-step explanation:
To find the value, start by modeling the inverse proportionality by using the base equations with the original givens.
y = k/x
12 = k/1.5
18 = k
Now we use that to model the equation
R = 18/A
And we can now use that to solve parts a) and b)
a)
R = 18/A
R = 18/5
R = 3.6
b)
R = 18/A
9 = 18/A
2 = A