X Use FOIL to solve (x+2)(x+1): Write x squared as x2
x2+3x+2
x+2x+2
Ox-2x-2
0/2
X
Answers
After using FOIL, the final answer will be
x2 + 3x + 2
What is the FOIL method?
The typical way of multiplying two binomials is known as the FOIL method since FOIL is a shorthand for it. The acronym FOIL stands for the following four terms that describe the item: (Each binomial "initial" term is multiplied together.) The FOIL method is a memory aid for the procedures involved in multiplying two binomials. The result of multiplying the first term, outer term, inner term, and last term is the product of two binomials: (a+b)(c+d)=ac+ad+bc+bd.
Solution explained:
A/Q we have
(x+2)(x-1)
= x * x + x + 2x + 2 (After expanding and applying distributive property)
= x2 + x + 2x + 2
= x2 + 3x + 2
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Related Questions
triangle with side of 8 and 11 and angle of 38
Answers
The area of the triangle is 43.81 square units
The side a = 8 units
The side b = 11 units
The perimeter of the triangle = 32 units
First we have to find the third side of the triangle
a + b + c = 32
Substitute the values in the equation
8 + 11 + c = 32
19 + c = 32
c = 32 - 19
c = 13 units
Then the area of the triangle = [tex]\sqrt{s(s-a)(s-b)(s-c)}[/tex]
The value of s = (a + b + c) / 2
= (8 + 11 + 13) / 2
= 32/2
= 16
Substitute the values in the equation
The area of the triangle = [tex]\sqrt{16(16-8)(16-11)(16-13)}[/tex]
Subtract the terms
= [tex]\sqrt{(16)(8)(5)(3)}[/tex]
= [tex]\sqrt{1920}[/tex]
= 43.81 square units
Hence, the area of the triangle is 43.81 square units
The complete question is:
Find the area of a triangle , two sides of which are 8 cm and 11 cm and the perimeter is 32 cm.
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X1. A restaurant owner keeps track of the food
prepared for guests for several days. Based on this
data, what is the constant of proportionality, if any
for this scenario? Show or explain how you know.
Vegetables Guests
Prepared
(Pounds)
Friday 15
Saturday 35
Sunday 25
Day
(number)
12
28
20
Answers
The constant of proportionality is the ratio of the number of guests to the food prepared is 0.8.
What are the ratio and proportion?The ratio is the division of the two numbers.
For example, a/b, where a will be the numerator and b will be the denominator.
Proportion is the relation of a variable with another. It could be direct or inverse.
As per the given tabel,
Suppose the number of guest ∝ food prepared.
Take the first data,
12 ∝ 15
12 = k(15)
k = 12/15 = 0.8
Hence "The constant of proportionality is the ratio of the number of guests to the food prepared is 0.8".
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The given question is incomplete, the complete question follows,
What value of x is in the solution set of the inequality 4x - 12 ≤ 16 + 8x?
O-10
997
-9
-8
O-7
Answers
Answer:
-7
Step-by-step explanation:
Given inequality:
[tex]4x - 12 \leq 16 + 8x[/tex]
Subtract 4x from both sides:
[tex]\implies 4x - 12-4x \leq 16 + 8x -4x[/tex]
[tex]\implies -12\leq 16+4x[/tex]
Subtract 16 from both sides:
[tex]\implies -12-16\leq 16+4x-16[/tex]
[tex]\implies -28\leq 4x[/tex]
[tex]\implies 4x \geq -28[/tex]
Divide both sides by 4:
[tex]\implies 4x \div 4 \geq -28 \div 4[/tex]
[tex]\implies x \geq -7[/tex]
This means that x is equal to or greater than -7.
Therefore, the value of x that is in the solution set of the inequality is -7 as -10, -9 and -8 are all less than -7.
Answer:
x ≥ -7
Step-by-step explanation:
Given inequation,
→ 4x - 12 ≤ 16 + 8x
Then the value of x will be,
→ 4x - 12 ≤ 16 + 8x
→ 4x - 8x ≤ 16 + 12
→ -4x ≤ 28
→ x ≥ 28/-4
→ [ x ≥ -7 ]
Hence, the value of x is -7.
complete the equivalent fraction 1/7=x/35
Answers
What is the y-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:3? m
Answers
The y-coordinate of the point that divides the directed line segment from J to K into a ratio of is 5.
The coordinates of point that divides the line segment into m:n ratio can be obtained as follows,
Coordinates of point = [tex](\frac{mx_{2}+ nx_{1} }{m+n} \frac{my_{2}+ ny_{1}}{m+n} )[/tex]
The coordinate of point J is (-3,1)
The coordinate of point K is (-8,11)
Consider the point that divides the line segment into 2:3 ratio as P(x,y).
The coordinates of point that divides the line segment into 2:3 ratio can be calculated as follows,
[tex]Coordinates of P = (\frac{3(-3)+2(-8)}{2+3}, \frac{3(1)+2(11)}{2+3} )[/tex]
[tex]= (\frac{-9-16}{5}, \frac{3+22}{5} )\\\\= (\frac{-25}{5} \frac{25}{5} )[/tex]
= (-5,5)
Hence the answer is The y-coordinate of the point that divides the directed line segment from J to K into a ratio of 2:3 is 5.
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1 4/5 is what fraction of 1 2/3
Answers
The fraction that 1 4/5 is of 1 2/3 is 1 2/25.
What is fraction?A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
Let the fraction be illustrated as x
Therefore, 1 2/3 of x = 1 4/5
5x/3 = 9/5
Cross multiply
5x × 5 = 3 × 9
25x = 27
Divide
x = 27 / 25
x = 1 2/25.
The fraction is 1 2/25.
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A bowling alley charges a flat fee to rent shoes. There is an additional fee for each game played. The function y=2. 5x+3 represents the cost y of bowling x games. Interpret the parameters of the function.
Answers
The number that represents the shoe rental charge is $3 and the price per game is $2.5.
Given:
The function y=2.5x+3 represents the cost y of bowling x games.
y = 2.5x+3
In the equation the 2.5 represents additional fee.
For 1 game = 2.5*1 = 2.5
For 2 games = 2.5 * 2
= 5
3 is the flat fee for renting the shoes.
Therefore the number that represents the shoe rental charge is $3 and the price per game is $2.5.
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The sum of 2 numbers is 27. One half of the first number plus one third of the
second number is 11. Find the numbers.
Answers
Answer:
x = 12, y = 15
Step-by-step explanation:
x + y = 27
1 / 2 x + 1 / 3 y = 11
y = 27 - x
1 / 2 x + (27 - x) / 3 = 11
1 / 2 x + 9 - 1 / 3 x = 11
1 / 6 x = 2
x = 12
12 + y = 27
y = 15
On a given blueprint, 1 in. : 6 ft. If the dimensions of the bedroom on the blueprint are 0.8 inches × 2.3 inches, what are its actual measurements? A. 4.8 ft by 13.8 ft B. 9.6 ft by 27.6 ft C. 18.4 ft by 14.8 ft D. 2.875 ft by 17.25 ft
Answers
The actual measurements of bedroom are 4.8 feet and 13.8 feet. Therefore, option A is the correct answer.
Given that, on a given blueprint, 1 in. :6 ft.
What is scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object, which is its representation but of a different size (bigger or smaller).
The basic formula to find the scale factor of a figure is expressed as,
Scale factor = Dimensions of the new shape ÷ Dimensions of the original shape.
The dimensions of the bedroom on the blueprint are 0.8 inches × 2.3 inches
Here, 0.8 × 6
= 4.8 feet
2.3 × 6
= 13.8 feet
The actual measurements of bedroom are 4.8 feet and 13.8 feet. Therefore, option A is the correct answer.
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identify the vertex axis of symmetry and domain and range. x: -2, -1, 0. -1, -2 g(x): -6, -3, 0, -3, -6
Answers
The vertical axis of symmetry is x = -1
the domain is {-2 2}
the range is {-6, 0}
What is domain and range?The domain refers to all possible value in the input of a graph. The input is the x coordinate and the possible values here is within the interval
-2 ≤ x ≤ 2The range refers to all possible value in the out put of a graph. The out put is the y coordinate and the possible values here is within the interval
-6 ≤ y ≤ 0Axis of symmetry refers to where the graph is bisected, the problem asked of vertical axis of symmetry. Therefore the line will be between the y coordinates
The vertical axis of symmetry and this x = -1
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Project: Chef for a DayImagine you are the pastry chef at your favorite restaurant. The manager has just told you that you have a large crowd coming in for lunch tomorrow and you need to prepare. This project includes a recipe for chocolate chip cookies. You are expecting 60 people, but the recipe does not serve that many people, so you will need to adjust the ingredients so there will be enough.
Chocolate Chip Cookies (makes 12 servings)
1 ¼ cups all-purpose flour
½ teaspoon baking soda
¼ teaspoon salt
¾ cup sugar
1 egg
2 tablespoons milk
1 ¾ cup chocolate chips
Read each question below carefully and provide complete answers.
1. This recipe serves 12 people, but you need to serve 60 people. What number will you need to multiply the amount of each ingredient by to adjust the recipe? How did you determine this number?
2. Show the steps involved in finding out how much flour you will need to make 60 servings of chocolate chip cookies, as if you were teaching someone how to multiply with fractions. Please do not use decimals in your work or in your final answer.
3. Show the steps involved in finding out how much baking soda you will need to make 60 servings of chocolate chip cookies, as if you were teaching someone how to multiply with fractions. Please do not use decimals in your work or in your final answer.
4. Rewrite the rest of the chocolate chip cookie recipe for 60 servings. Be sure to show your work for each ingredient and express each amount as a fraction.
_____teaspoons salt
_____cups sugar
_____eggs
tablespoons milk
_____ cups chocolate chips
5. How many more eggs do you need for 60 servings than you need for 12 servings? How did you obtain this number?
6. If you wanted to make exactly 78 servings of chocolate chip cookies, what number would you need to multiply the original amount of each ingredient by to adjust the recipe? How did you determine this number?
7. Consider you make a mistake with the salt and multiply wrong which adds more salt then needed. Your cupcakes might not taste the greatest. Another mistake might be you incorrectly find the wrong amount to make. You make too little or not enough. What we do after the mistake is the important part. These mistakes are really not a big deal but in some instance in life we make bigger mistakes that weigh heavy on us. God is a loving and forgiving God. Isaiah 41:10 Fear not, for I am with you; be not dismayed, for I am your God; I will strengthen you, I will help you, I will uphold you with my righteous right hand.
Reflect on a time when you made a mistake. It can be a big mistake, a small mistake, or somewhere in between. Please don’t go into specifics but talk about how you handled the situation with God’s help and how you felt after. Please write a paragraph of at least 5 sentences.
NEED HELP FAST ITS A PROJECT!
Answers
The number needed to multiply the amount of each ingredient by to adjust the recipe is 5. It's determined by dividing the number of people that needs to be served by the number of people the provided ingredients will serve.
The steps involved in finding out how much all-purpose flour needed to make 60 servings of chocolate chip cookies is multiplying Quantity of flour provided by number needed to multiply each ingredients with.The steps involved in finding out how much baking soda needed to make 60 servings of chocolate chip cookies is multiplying Quantity of baking soda provided by number needed to multiply each ingredients with.Quantity of other ingredients needed expressed as a fraction:1 ¼ teaspoons salt
3 ¾ cups sugar
5 eggs
10 tablespoons milk
10 ½ cups chocolate chips
The number of eggs needed for 60 servings than 12 servings is 4 eggs. This is obtained by subtracting eggs needed for 12 servings from eggs needed for 60 servingsThe number needed to multiply the amount of each ingredient by to adjust the recipe to 78 servimgs is 6 ½. It's determined by dividing the number of people that needs to be served by the number of people the provided ingredients will serve.How to adjust given ingredients to the required number of servingsThe ingredients provided serves = 12 peopleNumber of people that needs to be served = 60 people1. Number needed to multiply the amount of each ingredient by to adjust the recipe = Number of people that needs to be served ÷ The ingredients provided serves
= 60/12
= 5
2. Steps involved in finding out how much flour you will need to make 60 servings of chocolate chip cookies.
Quantity of flour provided = 1 ¼ cups
Flour needed for 60 servings = Quantity of flour provided × number needed to multiply each ingredients with
= 1 ¼ × 5
= 5/4 × 5
= 25/4
= 6 ¼
3. Steps involved in finding out how much baking soda you will need to make 60 servings of chocolate chip cookies
baking soda needed for 60 servings = Quantity of baking soda provided × number needed to multiply each ingredients with
= ½ × 5
= 5/2
= 2 ½
4. Teaspoons salt = ¼ × 5 = 5/4 = 1 ¼
Cups sugar = ¾ × 5 = 15/4 = 3 ¾
Eggs = 1 × 5 = 5
tablespoons milk = 2 × 5 = 10
Cups chocolate chips = 1 ¾ × 6 = 7/4 × 6 = 42/4 = 10 ½
5. The number of eggs needed for 60 servings than 12 servings = eggs needed for 60 servings - ieggs needed for 60 servings
= 5 - 1
= 4
6. Number needed to multiply the amount of each ingredient by to adjust the recipe to 78 servings = Number of people that needs to be served ÷ The ingredients provided serves
= 78/12
= 6 ½
7. One time I made a mistake of keeping bad company, it really affected my studies because I lost concentration in school. My parents were disappointed in me but they helped me get back on the right track.
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You go out to dinner and tip the waiter 21%. If your bill was $86.20, then what was your bill after
tipping 21%? Round to the nearest hundredth.
Answers
Answer:
The bill after tipping 21 percent would be $104.30.
Step-by-step explanation:
$86.20 x 0.21 = $18.102
$86.20 + $18.102 = $104.302
$104.302 ≈ 104.30
Hope my answer helped! Have a great afternoon.
This scale drawing shows a parking lot with an actual length of 315 meters. What is the width of the actual parking lot?
Answers
The width of the actual parking lot, given the length of the scale drawing and the actual length, is 235 m
How to find the width?The scale is given in the question to be 1 cm : 50 m. This means that for every 1 cm on the scale drawing, the actual dimensions are 50m.
Given that the width of the parking lot on a scale drawing is 4. 7 cm, the width of the actual parking lot will be:
= Width of parking lot on scale drawing x Number of meters per centimeter in drawing
= 4. 7 x 50
= 235 m
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The selling price of an item is $600. It is marked down by 10% , but this sale price is still marked up from the cost of $450. Find the markup from
cost to sale price.
Answers
$135 is markup price when cost is $450.
What is the cost price and an example?
Cost price, for instance, equals selling price plus profit ( when selling price and profit is given ) Cost is equal to Selling price plus Loss ( when selling price and loss is given ) Cost price = 100 Selling Price + 100 + Profit (where the Selling Price and Profit Percentage are supplied)selling price of item = $600
cost = $450
10%×$650=$585
$585-$450=$135
$135 is markup price .
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Please help me please
Answers
Answer:
x = 2
Step-by-step explanation:
The image shows a large rectangle with a similar, smaller triangle inside of it. The small leg on the small rectangle is 4, and the small leg on the large rectangle is 12. This tells me that the scale factor is 3.
If the scale factor is 3, then
[tex]6*3=6+6x[/tex]
Simplify
[tex]18=6+6x\\12=6x\\x=2\\[/tex]
you receive a $60 gift card to a move theater. a ticket to an afternoon show costs $6 and a ticket to an evening show costs $10. the rules of the gift card state that you can only buy a maximum of 8 total tickets with the card. let x
Answers
The constraints for this situation in the form of a system of inequalities is 6x + 10 y = 60.
Given:
you receive a $60 gift card to a move theater. a ticket to an afternoon show costs $6 and a ticket to an evening show costs $10. the rules of the gift card state that you can only buy a maximum of 8 total tickets with the card.
x = the number of afternoon tickets and y = the number of evening tickets.
6x ≤ 60
10y ≤ 60.
so
6x + 10 y = 60.
Therefore the constraints for this situation in the form of a system of inequalities is 6x + 10 y = 60.
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Which situation cannot be represented by the equation 8−x=3?
Responses
ASAP PLEASE
Responses
Sunnyville had 3 fewer inches of rain than Pleasantville. Pleasantville had 8 inches of rain. What is x, the amount of rain in Sunnyville?
Jackson walked 8 dogs. Henry walked 3. What is x, the number of dogs the boys walked all together?
Joe had $8 and bought a piece of pizza. He had $3 left over. What is x, the cost of the pizza?
The difference between Amal's score and Katie's score was 3. Amal had 8 points, but Katie had fewer. What is x, the amount of Katie's score?
Answers
This is because it is the total of dogs, so it would be 8+3=x
You work a basic week of 40 hours and your basic rate is $19.50 per hour. A rival company offers you an annual salary is $36.000. Except for the pay, everything is identical between the conpanies. Do you accept or reject the rival company's offer, and why ?
Answers
I will have to reject the offer of the rival company since it's lesser than $40560.
How to calculate the amountFrom the information, the person works a basic week of 40 hours and the basic rate is $19.50 per hour. It should be noted that there are 52 weeks in a year. The total amount will be:
= 40 × 19.50 × 52
= $40560
The rival company offers you an annual salary is $36000.
I'll reject the rival company's offer since it's lower.
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1. Use substitution to solve each system of equations
y = -2
y = 3x - 20
Answers
Answer:
[tex]x=6, y=-2[/tex]
Step-by-step explanation:
[tex]-2=3x-20 \\ \\ 3x=18 \\ \\ x=6 \\ \\ \therefore x=6, y=-2[/tex]
Answer:
The answer is x = 6. If you want to solve the equation by inputting the x and y value, then take the x value and input it into the equation as well as the y value.
Step-by-step explanation:
To solve this equation, plug in the value equal to y and solve for x. The first thing you have to do is make the equation -2 = 4x - 20, since we already have the value for y which is given in the question. Then add 20 to both sides of the equation. We now have 18 = 3x, divide both sides by 3 and you have your answer.
Hence, X = 6.
How to do q14 pleaseeeee someone help me i really need help
Answers
The mean of the previous four tasks was 77%.
What is Mean?
The mean is just the average of the given set of values. It represents a data set's values being distributed evenly.
Solution:
Mean = Sum of Observation / Total Number of Observation
Let, the sum of previous four values be x
According to the question,
78 = x + 82 / 5
here, 5 is the total number of observations
so,
x can be calculated by cross multiplication
390 - 82 = x
x = 308
Since, we have the sum of the four values and the numer of observations is 4, then mean would be
Mean = 308/4
Mean = 77%
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A television can be purchased cash for $1800 or on hire purchase for a deposit of 20% and 18 monthly payments of $90. If taken on hire purchase calculate:
A) the deposit
B) the hire purchase price
C) Hence, the amount saved if the television is bought for cash.
Answers
Find the slope of the line shown of the graph to the right
Answers
The slope will be 1, for the right.
What is the slope of line?
Given two line-side coordinates, use the slope formula to determine the slope of the line. The slope is defined as the ratio of the change in the y values to the change in the x values using the formula m=(y2-y1)/(x2-x1). x1 and y1 are represented by the first point's coordinates. The second points are located at x2, y2, and their locations. Whichever point you choose to classify as the first and which as the second doesn't matter.
We know that formula two find the slope of the line joining two points which is
m = (4-3)/(4-3)
m = 1
Hence the slope of the line is shown in the graph is 1.
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X1. A restaurant owner keeps track of the food
prepared for guests for several days. Based on this
data, what is the constant of proportionality, if any
for this scenario? Show or explain how you know.
Vegetables Guests
Prepared
(Pounds)
Friday 15
Saturday 35
Sunday 25
Day
(number)
12
28
20
Answers
The constant of proportionality is the ratio of the number of guests to the food prepared is 0.8.
What are the ratio and proportion?
The ratio is the division of the two numbers.
For example, a/b, where a will be the numerator and b will be the denominator.
Proportion is the relation of a variable with another. It could be direct or inverse.
As per the given table,
Suppose the number of guest ∝ food prepared.
Take the first data,
12 ∝ 15
12 = k(15)
k = 12/15 = 0.8
Hence "The constant of proportionality is the ratio of the number of guests to the food prepared is 0.8".
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What is the meaning of a 95% confidence interval for a population mean?
Answers
A 95% confidence interval is a set of data that contains the real mean of the population 95% of the time. This is not the same as a range that includes 95% of the possible values.
What is Confidence Interval?
In statistics, a confidence interval defines the possibility that a population parameter will fall between a set of values for a certain proportion of the time.
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A biologist uses a box-shaped fish trap that measures 1/4 meter by 2/3 meter by 3/5 meter. What is the volume of the trap in cubic meters?
Answers
Answer:
1/10 or 0.1 m^3
Step-by-step explanation:
V = 1/4 * 2/3 * 3/5 = 6/60 = 1/10 m^3 = 0.1 m^3
The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A.
Answers
The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A it is true.
The (i,j) minor of a matrix A is the matrix Aij obtained by deleting row i and column j from A. A determinant of an n×n matrix can be defined as a sum of multiples of determinants of (n−1)×(n−1) sub matrices.
This is done by deleting the row and column which the elements belong and then finding the determinant by considering the remaining elements. Then find the co factor of the elements. It is done by multiplying the minor of the element with -1i+j. If Mij is the minor, then co factor, [tex]c_{ij}[/tex] [tex]= -1^{i+j}[/tex] + [tex]m_{ij}[/tex].
Each element in a square matrix has its own minor. The minor is the value of the determinant of the matrix that results from crossing out the row and column of the element .
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A 60 inch board is to be cut into three pieces so that the second piece is four times as long as the first piece and the third piece is five times as long as the first piece if X represents the length of the first piece find length of all three pieces
Answers
The length of the first piece is 6 inches.
The length of the second piece is 24 inches.
The length of the third piece is 30 inches.
What is the length of each piece?The length of the first piece = x
The length of the second piece = 4 ×x = 4c
The length of the third piece = 5 × x = 5x
Total length of the board = 60
Sum of the length of the three pieces = total length of the board
x + 4x + 5x = 60
10x = 60
x = 60 / 10
x = 6
The length of the second piece = 4 ×6 = 24
The length of the third piece = 5 × 6 = 30
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Simplify the expression.
the linear expression quantity negative 1 over 4 times r minus 8 minus 5 over 7 times r end quantity minus the linear expression quantity negative 3 over 4 times r plus 9 end quantity
negative 48 over 28 times r minus 1
negative 3 over 14 times r plus negative 17
negative 3 over 14 times r minus 1
9 over 28 times r plus negative 17
Answers
The value of the linear expression quantity negative 1 over 4 times r minus 8 minus 5 over 7 times r end quantity minus the linear expression quantity negative 3 over 4 times r plus 9 end quantity is B. negative 3 over 14 times r plus negative 17
What is an expression?Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.
Based on the information given, the expression will be:
= (-1/4r - 8 - 5/7r) - (-3/4r + 9)
Collect like terms
-1/4r - 5/7r + 3/4r - 8 - 9.
= - 3/14r - 17
In conclusion, the correct option is B.
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Answer:
Step-by-step explanation:
b
[tex]\frac{2\sqrt{3 }-1 }{3\sqrt{3}+4 }[/tex]
Answers
If you are tossing a six-sided die, what is the probability of getting either a 1 or a 2 on your first toss and a 1 or a 2 on your second toss?.
Answers
The probability of getting either 1 or 2 on first and second toss is 1/9
How to calculate the probability?
Probability is numerical description for how likely something is to happen. To know probability something event we just divide no the outcome by total possible of the outcome.
The probability of either 1 or 2 side on first toss is
= no the outcome / total possible the outcome
= 2/6
= 1/3
For second toss is same as first toss
= 2/6
= 1/3
Since the second toss is independent, it is called an independent event. So, we just need to multiply the probability on the first toss by the probability on the second toss,
= 1/3 * 1/3
= 1/9
Thus, the probability of getting either 1 or 2 on first and second toss is 1/9
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