Answer:
Step-by-step explanation:
1st angle = (2x+6)° = (56 + 6)°= 62°. 2nd angle = x = 28°. Thus, 62° and 28° are the required angles. Answer.
How many times smaller is 2.9 × 10^3 than 3.654 × 10^5?
126
79
1.26
0.79
The number 2.9 × 10^3 is 126 times smaller than 3.654 × 10^5. Because its ratio is 126. It can be calculed by the concept of ratio.
What is ratio?
It is the way of representation of a quantity relative to the other quantity. Its symbol is :. For example size of 2 relative to 5 is represented by 2:5 or 2/5.
To find how many times 2.9 × 10^3 is smaller than 3.654 × 10^5, take ratio of 3.654 × 10^5 and 2.9 × 10^3 as follows:
[tex]=\frac{3.654\times 10^5}{2.9 \times10^3}\\[/tex]
Now, subtract the indices as follows:
[tex]=\frac{3.654\times 10^2}{2.9}\\[/tex]
Now, divide the number as follows:
[tex]=1.26\times 10^{2}\\[/tex]
Now, write in simplest form as follows:
[tex]=126[/tex]
Hence, 2.9 × 10^3 is 126 times smaller than 3.654 × 10^5. It can be calculed by the concept of ratio.
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Answer:
126 times smaller
Step-by-step explanation:
How do you find the unit rate of a number
The formula for the test statistic used for a two sample test of means where the population variances are unknown and unequal is:
t = X1−X2√s12/n1+s22/n2X1-X2s12/n1+s22/n2 Match the variables to their description.
------------->
The variables of the test statistic can be concluded as [tex]s_{1} ^{2}[/tex], [tex]s_{2} ^{2}[/tex] as the variance of two samples, [tex]n_{1}[/tex], [tex]n_{2}[/tex] as the respective size of the two samples, [tex]t[/tex] as the t-distribution test statistic, and [tex]x_{1}[/tex], [tex]x_{2}[/tex] as the mean of the two samples.
It is given to us that the test statistic is used for a two sample test of means where the population variances are unknown and unequal.
Pooled standard deviation estimates cannot be used when the two groups have unequal variances. Instead, we have to find out the standard error for each group separately.
The formula for this type of test statistic is given by -
[tex]t=\frac{x_{1} -x_{2} }{\sqrt{\frac{s_{1} ^{2} }{n_{1} } +\frac{s_{2} ^{2} }{n_{2} } } }[/tex] ------- (1)
Here, the variables can be defined as below -
[tex]s_{1} ^{2}[/tex], [tex]s_{2} ^{2}[/tex] = The variance of two samples
[tex]n_{1}[/tex], [tex]n_{2}[/tex] = The respective sizes of the two samples
[tex]t[/tex] = t-distribution test statistic
[tex]x_{1}[/tex], [tex]x_{2}[/tex] = Mean of the two samples
Thus, the variables of the test statistic can be concluded as [tex]s_{1} ^{2}[/tex], [tex]s_{2} ^{2}[/tex] as the variance of two samples, [tex]n_{1}[/tex], [tex]n_{2}[/tex] as the respective size of the two samples, [tex]t[/tex] as the t-distribution test statistic, and [tex]x_{1}[/tex], [tex]x_{2}[/tex] as the mean of the two samples.
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Josh is 6 years older than 5 times Kim's age. The sum of their ages is less than 54.
What is the oldest Kim could be? Show all your work.
I
Answer:
8
Step-by-step explanation:
Josh is 6 years older than 5 times Kim's age. The sum of their ages is less than 54. What is the oldest Kim could be?
J + k < 54 when J = 5k + 6 so:
5k + 6 + k < 54
6k + 6 < 54
subtract 6 from both sides:
6k + 6 - 6 < 54 - 6
6k < 48
divide both sides by 6:
6k/6 < 48/6
k < 8
Kim could be 8 at maximum.
find a monic quadratic polynomial $f(x)$ such that the remainder when $f(x)$ is divided by $x-1$ is $2$ and the remainder when $f(x)$ is divided by $x-3$ is $4$.
f(x) = x + 1 is the monic quadratic polynomial used here
Given,
The monic quadratic polynomial f(x)
The remainder when f(x) divided by x - 1 is 2
The remainder when f(x) divided by x - 3 is 4
We have to find f(x).
Monic Quadratic Polynomial;-
A monic polynomial in algebra is a univariate polynomial with a single variable and a leading coefficient of 1. Its leading coefficient is the highest degree nonzero coefficient.
Here,
The remainder when f(x) divided by x - 1 is 2
Assume f(x) / x - 1 = 1
Then,
f(x) = (x - 1) × 1 + 2
f(x) = x - 1 + 2
f(x) = x + 1
Next,
The remainder when f(x) divided by x - 3 is 4
Assume f(x) / x - 3 = 1
Then,
f(x) = (x - 3) × 1 + 4
f(x) = x - 3 + 4
f(x) = x + 1
That is,
The monic quadratic polynomial used here is, f(x) = x + 1
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Ameekah is working with consecutive integers. if she uses x to represent her first number, what should she use to represent her second number? x x 1 x 2 2x
The second number used by Ameekah to represent the consecutive integers is (x + 1).
Explain the term consecutive integers?Integers that follow one another in a predictable counting pattern are referred to as consecutive integers. There are no numbers missed while showing consecutive integers in either a sequence, so the range between them is absolutely fixed. The consecutive integers in increasing order are referred to as consecutive integers.Let 'x' be the first number written by Ameekah.
Then, the second number will be obtained by adding one to first number.
= x + 1
Thus, the second number used by Ameekah to represent the consecutive integers is (x + 1).
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Answer:
"B" is correct, "x + 1"
Step-by-step explanation:
Have a Jocular Day
Which rule best red the following patterns 8,4,10,6,12,8,14
The rule with describes the expression 8,4,10,6,12,8,14 is the alternating numbers gets increased by 2
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the expression be represented as A
Now , the expression A is
A = 8,4,10,6,12,8,14
Taking out the alternate numbers from the expression A , we get
A₁ = 8 , 10 , 12 , 14
So ,the values of A₁ increases by 2
And ,Taking out the alternate numbers from the expression A , we get
A₂ = 4 , 6 , 8 , 10
So , the values of A₂ also increases by 2
Hence , the alternating numbers in the expression increases by 2
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a piece of wire of length l cm is cut into two pieces. one piece, of length x cm, is made into a circle; the rest is made into a square. (a) find the value of x that makes the sum of the areas of the circle and square a minimum. find the value of x giving a maximum. (b) for the values of x found in part (a), show that the ratio of the length of wire in the square to the length of wire in the circle is equal to the ratio of the area of the square to the area of the circle.3 (c) arethevaluesofxfoundinpart(a)theonlyvalues of x for which the ratios in part (b) are equal?
As we can see, the equality is equal for only one value of xx, which was the same as the one we found in part (a).
(a) [tex]x = \frac{L\pi }{4+\pi }[/tex]
(b) True
(c) Yes
What is maximum and minimum?
The smallest value in the data set is the minimum. The largest value in the data set is the maximum.
(a) The circumference of the circle is xx, which means that
[tex]P_ 1= 2\pi r\\x = 2\pi r\\r = \frac{x}{2\pi }[/tex]
The area of the circle is,
[tex]A_c = \pi r^2\\A_c = \frac{x^2}{4\pi }[/tex]
The circumference of the square is L - x, which means
[tex]P_2 = 4a \\L-x=4a\\a = \frac{L-x}{4}[/tex]
The area of the square is,
[tex]A_s = a^2\\A_s=\frac{(L-x)^2}{16}[/tex]
The sum of the areas of the circle and the square is
[tex]A = A_c + A_s\\A = \frac{x^2}{4\pi } +\frac{(L-x)^2}{16} \\A = \frac{4x^2+(L-x)^2\pi \pi }{16\pi } \\A = \frac{4x^2+(L^2 -2Lx+x^2)\pi }{16\pi } \\A = \frac{(4+\pi )x^2-2Lx\pi +L^2\pi }{16\pi }[/tex]
The derivative of the function of the total area is
[tex]A = \frac{4+\pi }{8\pi }x-\frac{L}{8}[/tex]
We solve the equation A'(x) = 0
[tex]\frac{4+\pi }{8\pi }x-\frac{L}{8}=0\\ \frac{4+\pi }{\pi }x=L\\ x = \frac{L\pi }{4+\pi }[/tex]
So, [tex]x = \frac{L\pi }{4+\pi }[/tex] is a critical point A, and it is a global minimum of A since
[tex]A"(x) = \frac{4+\pi }{8\pi } > 0[/tex] for all x.
(b) The area of the circle for [tex]x = \frac{L\pi }{4+\pi }[/tex] is
[tex]A_c = \frac{(\frac{L\pi }{4+\pi } )^2}{4\pi } \\A_c = \frac{(\frac{L^2\pi ^2}{(4+\pi )^2} )}{4\pi } \\A_c= \frac{L^2\pi }{4(4+\pi )^2}[/tex]
The area of the square for [tex]x = \frac{L\pi }{4+\pi }[/tex] is
[tex]A_s = \frac{(L-\frac{L\pi }{4+\pi } )^2}{16}[/tex]
The ratio of the area is,
[tex]\frac{A_s}{A_c} = \frac{(\frac{(L-\frac{L\pi }{4+\pi })^2 }{16} )}{(\frac{L^2\pi }{4(4+\pi )^2} )}[/tex]
[tex]= \frac{(L - \frac{L\pi }{4+\pi })^2 }{16}*\frac{4(4+\pi )^2}{L^2\pi } \\ = \frac{L^2-\frac{2L^2\pi }{4+\pi }+(\frac{L\pi }{4+\pi } )^2 }{4} *\frac{(4+\pi )^2}{L^2\pi } \\= \frac{(4+\pi)^2 }{4\pi }-\frac{4+\pi }{2}+\frac{\pi }{4}\\ = \frac{4}{\pi }[/tex]
The ratio of the length of wire in the square to the length of wire in the circle for [tex]x = \frac{L\pi }{4+\pi }[/tex] is
[tex]\frac{L-x}{x} =\frac{L-\frac{L\pi }{4+\pi } }{\frac{L\pi }{4+\pi } } \\= \frac{\frac{4L}{4+\pi } }{\frac{L\pi }{4+\pi } } \\= \frac{4}{\pi }[/tex]
As we can see (1) = (2)
(c) To prove this, we solve the equation
[tex]\frac{A_s}{A_c} = \frac{L-x}{x} \\ \frac{\frac{(L-x)^2}{16} }{\frac{x^2}{4\pi } } = \frac{L-x}{x}\\ \frac{(L-x)^2}{4}*\frac{\pi }{x^2} = \frac{L-x}{x} \\ \frac{L-x}{4} *\frac{\pi }{x} =1\\L\pi -\pi x=4x\\L\pi = (4 + \pi )x\\x = \frac{L\pi }{4+x}[/tex]
As we can see, the equality is equal for only one value of xx, which was the same as the one we found in part (a).
Hence,
(a) [tex]x = \frac{L\pi }{4+\pi }[/tex]
(b) True
(c) Yes
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You are given an integer n where 0 <= n <= 100, followed by another line of input which has a word w with length l where 1 <= l <= 50. Your task is to print n lines with the word w. The lines of your output should not have any trailing or leading spaces. Your output lines should not have any trailing or leading whitespaces.
The Python program prints the value of the integer n from the input string shown. (Refer to the coding below)
What is a python program?An arrangement of Python statements that have been specifically designed to accomplish a task is the simplest definition of a program.
A program is even our straightforward hello.py script.
Although it is only one line long and of limited use, it is a Python program by the strictest definition.
Functions assist in segmenting our program into manageable, modular portions.
Our program becomes more organized and controlled as it gets bigger and bigger.
It also makes the code reusable and prevents repetition.
So, we know that the program is for the given integer n:
Defining the integer variable "N" that accepts a user-supplied integer value.
The user-end string value is input using another variable "W" that is declared in the next step.
A for loop using the range method and an integer variable is declared after all input values have been entered.
This loop prints the string value.
The Python program prints the value of the supplied string.
N= int(input("Enter a value of integer N (0 <= N <= 100): "))#defining an integer variable N that inputs integer value from the user-end
W = input("Enter the word W (length of 1 <= L <= 50): ")#defining a string variable W that inputs the value fom the user-end
for n in range(N):#defining a for loop that uses the range method with integer variable and prints the string value
print(W)#printing the string value
Therefore, the Python program prints the value of the integer n from the input string shown.
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Complete question:
You are given an integer N where 0 <= N <= 100, followed by another line of input which has a word W with length L where 1 <= L <= 50. Your task is to print N lines with the word W. The lines of your output should not have any trailing or leading spaces.
Your output lines should not have any trailing or leading whitespaces
Input
3
Hello
Output
Hello
Hello
Hello
**WILL MARK BRAINLIEST AND GIVE 30 POINTS**
Fill in the blanks to solve the system of equations. Enter only 1 term in each blank.
Answer:
1st blank = 6x
2nd blank = 12
3rd blank = 2
4th blank = 2
5th blank = 8
6th blank = 5
13. Grace is an egg farmer who sells eggs in two different-sized containers: a
dozen eggs for $5 or a 30-egg flat for $10.80. She is going to start selling an
18-ege carton as well and is wondering what price to charge. She wants to
set the unit price of the 18-egg carton between the unit prices for the other
two sizes. What price range can she choose from for the new size?
Answer:
6.48 <= x <= 7.5
Step-by-step explanation:
(5/12)×18=7.5
(10.80/30)×18=6.48
6.48 <= x <= 7.5
What is the volume of the following triangular prism?
The required volume of the triangular prism will be 126 cubic meters.
What is the volume of a triangular prism?The triangular prism is the amount of space occupied by an object. It is determined by the number of unit cubes required to completely fill the solid.
V = 1/2 x H x W x L
The volume of the triangular prism will be
Volume of triangular prism = 1/2 x 9 x 6 x 13
Volume of triangular prism = 9 x 3 x 13
Volume of triangular prism = 27 x 13
Volume of triangular prism = 351 cubic yards
Thus, the volume of the triangular prism will be 126 cubic meters.
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A 7 ft tall person is walking away from a 20 ft tall lamppost at a rate of 5 ft/sec. Assume the scenario can be modeled with right triangles. At what rate is the length of the person's shadow changing when the person is 16 ft from the lamppost?
In similar triangles, both the two triangles must satisfy the two properties. One is the side proportional, and the other is equal in angles. There are three criteria in similarity. They are AA similarity, SSS similarity, and SAS similarity. The below one satisfies the AA similarity.
The length of the shadow is changing rate at 2.69 [tex]\frac{ft}{sec}[/tex].
What do you mean by length?
The measurement or size of something from end to end is referred to as its length. To put it another way, it is the greater of the higher two or three dimensions of a geometric shape or object. For instance, the length and width of a rectangle define its dimensions.
According to data in the given question,
We have the given information:
The height of the person is 7 ft.
The person is walking away from the post at a rate of 5ft/sec.
The height of the lamppost is 20ft.
Let the person's distance from the bottom of the light post be x ft.
And his shadow's length is y ft.
Form the similar triangles,
[tex]\frac{x+y}{20}=\frac{y}{7}\\[/tex]
7(x+y) = 20y
7x+7y = 20y
20y-7y = 7x
13y = 7x
y = [tex]\frac{7}{13}x[/tex]
Now, we will differentiating wrt t,
[tex]\frac{dy}{dt}=\frac{7}{13}\frac{dx}{dt}................(1)[/tex]
We know that,
[tex]\frac{dx}{dt}=5\frac{ft}{sec}[/tex]
Putting the value of [tex]\frac{dx}{dt}[/tex] in equation (1),
[tex]\frac{dy}{dt}=\frac{7}{13}.5=\frac{35}{13}=2.69\frac{ft}{sec}[/tex]
Therefore, the length of the shadow is changing rate at 2.69 [tex]\frac{ft}{sec}[/tex].
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Write 0.431 as a percent.
Answer:
43.1%
Step-by-step explanation:
A pet store clerk suggested 5 small fish for a 6-gallon fish tank. What size tank would be suggested to hold 40 small fish?.
For containing the 40 small fish, the size of the fish tank required is
48 -gallon.
Explain the meaning of the term unitary method?The unitary approach includes determining the value of an individual unit, from which we can calculate the values of the necessary number of units. By using the unitary technique, we may calculate the value of a particular unit from the values of several other units, and then we can use this value to calculate the value of the necessary number of units.As the stated question-
For 5 small fish -----> 6-gallon fish tank required.
Then, for 1 small fish,
1 small fish -----> 6/5 -gallon fish tank required.
For the total of 40 small fish.
40 small fish -----> 40x6/5 -gallon fish tank required.
40 small fish -----> 48 -gallon fish tank required.
Thus, for containing the 40 small fish, the size of the fish tank required is
48 -gallon.
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Ffgggggggggggggggggggggggggggggggggggg
Answer:
Step-by-step explanation:
Cosine is adjacent over hypotenuse.
So for Angle Z, the adjacent leg is 12 and the hypotenuse leg is 20.
The Cosine ratio is 12/20.
16 is not used and would be the opposite leg to Angle Z
D is 2, it got cut off
a swimming pool open 12 3/4 hours each day. the life gurads work shifts that are 3/4 hour long . how many shifts are there each day?
Answer:
17
Step-by-step explanation:
I hope this helps!!!
3/4 3/4 3/4 3/4= 3 hours
3 hours equals 4 shifts
you do this 4 times and it equals 12 hours, and 16 . Then you have 3/4 left which equals a shift. So 16+1=17
if a 10 percent increase in the price of good x results in a 20 percent decrease in the quantity of good y demanded, which of the following is true?
Elastic demand for a good is defined as when the price of a good rises by 10% while the quantity required falls by 20%.
What is Elastic demand?When a product's price changes, consumer demand is said to be elastic. Consumers will purchase significantly more if the price drops just a little. They won't buy as much if prices increase somewhat instead opting to wait for them to level out.
If all other variables remain constant, the ratio of a product's percent change in demand to its percent change in price determines whether a product's demand is elastic or inelastic.
It is neither elastic nor inelastic for an item's price to alter in proportion to its change in demand. In other words, a product has elastic demand if demand fluctuates more than price does.
Hence, Elastic demand for a good is defined as when the price of a good rises by 10% while the quantity required falls by 20%.
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Construct a polynomial function with the stated properties. Reduce all fractions to lowest terms. Third-degree, with zeros of −3, −1, and 2, and a y-intercept of −14.
The polynomial equation with zeroes of -3, -1, 2 and y-intercept of -14 is x^3 +2x^2 -5x -20.
what are zeroes of a function?The zeros of a function f(x) are values of the variable x such that the values satisfy the equation f(x) = 0. The zeros of a function are also called the roots of a function.
if -3, -1, 2 are zeroes of y(x) with an intercept d then
y(x) = (x-a)(x-b)(x-c) + d
where a = -3, b = -1, c = 2, d = -14
Substituting we have
y(x) = (x+3)(x+1)(x-2) -14
let us expand the first two linear factors
(x+3)(x+1) =x^2 +3x + x + 3 which is x^2 + 4x + 3
multiply this result with (x-2), we have
(x-2)(x^2 + 4x +3)
x^3 + 4x^2 +3x -2x^2 -8x -6
simplifying it becomes x^3 +2x^2 -5x -6
y(x) = x^3 +2x^2 -5x -6 -14
y(x) = x^3 +2x^2 -5x -20
In conclusion the polynomial function is x^3 +2x^2 -5x -20
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Solve the proportion
Answer:
Step-by-step explanation:
98
Answer:
8
Step-by-step explanation:
the dunking booth is the shape of a cube represented below x 3. write a polynomial that represents the volume of the dunking booth. write your answer in descending order. please use the palette below to enter your answer.
The dunking booth is the shape of a cube represented below (x+3). Therefore, the polynomial of volume of the dunking booth is
(x +3) (x+3)².
Lets talk about the cube prism
- It has cube faces each two opposite faces are congruent
- It has three dimensions.
- Its volume = a³
In our problem the dunking booth is a cube prism with dimensions: x + 3
Side = x +3
therefore,
V = a³ = ( x +3)³
= (x)³ + 3× (x)²× 3 + 3× x × (3)² + (3)³
= x³ + 9x² + 27x + 27
Regrouping ,
= x³+ 27+ 9x² + 27x
Rewrite 27as 33.
x³+ 3³+9x²+ 27x
Since both terms are perfect cubes, factor using the sum of cubes formula,
a³+b³ = (a + b)(a²- ab+ b²) where a=x and b=3.
(x+3)(x− x⋅3 + 32)+ 9x²+ 27x
Simplify.
(x+3)(x²− 3x + 9)+ 9x²+ 27x
⇒ (x+3)(x²− 3x + 9)+ 9x(x+3)
Now,
x+3 out of (x+3)(x²− 3x + 9)+ 9x(x+3) .
⇒ (x+3)(x²− 3x + 9 + 9x)
Add −3x and 9x.
(x+3) (x²+ 6x+ 9)
Rewrite the polynomial.
(x+3)(x²+ 2⋅x⋅3+ 3²)
Factor using the perfect square trinomial rule a²+2ab+b² = (a + b)² , where a = x and b = 3.
(x+3)(x+3)².
Therefore, the polynomial is (x+3)(x+3)².
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x+3(2x-4) just checking answer
[tex]\fbox{7x-12}[/tex]
Distributive property:
[tex]x+(3)(2x)+(3)(-4)[/tex]
[tex]x+6x+-12[/tex]
Combine like terms:
[tex](x+6x)+(-12)[/tex]
[tex]7x-12[/tex]
please someone help me with this! (the answer is not 6c to the power of 6 btw)
8c to the power of 18
The ratio of minutes to gallons of water flowing through a garden hose is 2 to 12 carlota says that an equivalent ratio of minutes to gallons is 6 to 1 is Carlota correct?
Answer:
no
Step-by-step explanation:
2 : 12 = 1 : 6
A study was conducted to compare the proportion of drivers in Boston and New York who wore seat belts while driving. Data were collected, and the proportion wearing seat belts in Boston was 0.581 and the proportion wearing seat belts in New York was 0.832 Due to local laws at the time the study was conducted, it was suspected that a smaller proportion of drivers wear seat belts in Boston than New York. (a) Find the test statistic for this test using Ha: p8くPN. (Use standard error-0.116.) (3 decimal places) (b) Determine the p-value (3 decimal places) (c) Based on this p-value, which of the following would you expect for a 95% confidence interval for pB-PNY? All values in the interval are negative. Some values in the interval are positive and some are negative. All values in the interval are positive (d) What is the correct conclusion? There was no significant difference between the proportion of drivers wearing seat belts in Boston and New York. The proportion of Boston drivers wearing seat belts was significantly lower than the proportion of New York drivers wearing seat belts. The proportion of Boston drivers wearing seat belts was significantly higher than the proportion of New York drivers wearing seat belts
(A.)test statistic for this test using Ha: p8くPN is Z = -2.164 (B.) p-value (3 decimal places) is 0.015. (C.) Based on this p-value, which of the following would you expect for a 95% is negative. (D.) the correct conclusion is The proportion of Boston drivers wearing seat was significantly lower than the proportion of new York drivers wearing seat belts.
A.)
According to given data find the test statistic for this test using Ha:
p1 = 0.581
p2 = 0.832
standard error = SE = 0.116
Test statistics :-Z = [tex]\frac{p1 - p2}{SE}[/tex]
Z = [tex]\frac{0.581 - 0.832}{0.116}[/tex] = -2.164
Z = -2.164
B.)
According to given Determine the p-value (3 decimal places).
p - valueit is left tailed test.
p - value for left tailed test is,
p - value = P(Z < test statistics )
p - value = P(Z < -2.164)
P - value = 0.015
C.)
Based on this p-value, which of the following would you expect for a 95%
confidence level = 95% = 0.95
significance level = α = 0.05
P -value is less than 0.05
so, reject null hypothesis at α = 0.05
That is [tex]P_{B}[/tex] < [tex]P_{NY}[/tex]
so, based on P - value , All values in the 95% confidence interval
PB - PNY is negative.
D.)
According to given data What is the correct conclusion?
Reject null hypothesis at α = 0.05
so, [tex]P_{B}[/tex] < [tex]P_{NY}[/tex]
Hence, The proportion of Boston drivers wearing seat was significantly lower than the proportion of new York drivers wearing seat belts.
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What is the value of 16/2
Answer: 8
Step-by-step explanation: 16/2 is simply 16 ÷ 2 in fraction form,
16 ÷ 2 = 8
Expand and fully simplify (x+5)(x+4)(x+4)
Answer: (x+5)(x+2)^2
Step-by-step explanation: Expanding (x+5)(x+4)(x+4) gives:
(x+5)(x+4)(x+4) = x(x+4)(x+4) + 5(x+4)(x+4)
= x^2(x+4) + 4x(x+4) + 5x(x+4) + 20(x+4)
= x^3 + 4x^2 + 5x^2 + 20x + 16x^2 + 80x + 20x + 80
= x^3 + 9x^2 + 45x + 80
Fully simplifying this expression gives:
x^3 + 9x^2 + 45x + 80 = (x+5)(x^2+4x+16)
= (x+5)(x+2)^2
assume three dictionaries are assigned to the variables, canadian capitals, mexican capitals, and us capitals. these dictionaries map provinces or states to their respective capitals. write code that creates a new dictionary that combines these three dictionaries, and associate it with a variable named nafta capitals.
The code is written in nafta capital python.
canadian_capitals = {"Alberta":"Edmonton", "British Columbia":"Victoria", "Manitoba":"Winnipeg"} ( I created the first dictionary with the variable name called canadian_capital. Notice the province of Canada is mapped to to their respective capitals.)
mexica_capitals ={"Aguascalientes":"Aguascalientes", "Baja California":"Mexicali", "Baja California Sur":"La Paz"} ( I created the second dictionary with the variable name called mexican_capital. The states are also mapped to their respective capitals.)
us_capitals ={"Alabama":"Montgomery", "Alaska":"Juneau", "Arizona":"Phoenix"} ( I created the third dictionary with the variable name called us_capital. The states are also mapped to their respective capitals.)
nafta_capitals = {} (This is an empty dictionary with the variable name nafta_capitals to combine the 3 dictionaries.)
nafta_capitals.update(canadian_capitals) (I updated the empty dictionary with the canadian_capitals dictionary.)
nafta_capitals.update(mexica_capitals) (I also added the mexica_capitals dictionary to the nafta_capitals dictionary.)
nafta_capitals.update(us_capitals) I also added the us_capitals dictionary to the nafta_capitals dictionary.
print(nafta_capitals) ( The whole 3 dictionaries have been combined to form the nafta_capitals dictionary. The print function displays the already combine dictionaries.)
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singapore's area of land is 130 square kilometers and its population density is 8,350 people per square km. the number of people in singapore is closest to:
The number of people in Singapore is 1085500 people .
In the question ,
it is given that ,
the Singapore's land area is = 130 square kilometer ,
the population density of Singapore is = 8350 people per square kilometer ,
So , the number of people in Singapore can be calculated using the formula ,
Number Of People = (population density of Singapore)×(land area of Singapore)
Substituting the value of population density and land area , we get
hence , Number Of People = 8350 × 130
= 1085500 people .
Therefore , the number of people are 1085500 .
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