Answer:
6a-2b-3c+4d
Step-by-step explanation:
2a+4a = 6a
b-3b = -2b
-c-2c = -3c
-d+5d = 4d
Answer:
6a - b - 3c + 4d
Step-by-step explanation:
⭐What is a polynomial?
if "poly" means "many" and "nomial" means "terms", then polynomial means "many terms"Whenever you add polynomials, the only terms you can perform addition or subtraction on are like terms.
⭐What are like terms?
terms with the same variable AND exponentWe are asked to add the two given polynomials. Therefore, we have to add the like terms.
[tex]2a + b - c - d + (4a - 3b - 2c + 5d)[/tex]
a and a, b and b, c and c, and d and d all have the same variable with an exponent of 1.
When adding, make sure to utilize the correct addition rules.
⭐What are the rules for adding real numbers?
NEGATIVE + positive = NEGATIVEnegative + POSITIVE = POSITIVEPOSITIVE + POSITIVE = POSITIVENEGATIVE + NEGATIVE = NEGATIVE2a and 4a are positive. Therefore, 2a + 4a = 6a.
-3b is negative, but b is positive. -3b > b. Therefore, -3b + b = -2b.
-c and -2c are both negative. Therefore, -2c - c = -3c.
-d is negative, but 5d is positive. 5d > -d. Therefore, -d + 5d = 4d.
∴ [tex]2a + b - c - d + (4a - 3b - 2c + 5d) = 6a -b -3c + 4d[/tex]
⭐if this response helped you, please mark it the "brainliest"!⭐
The perimeter of a rectangle pool is 332m, if the length of the pool is 89m, what is its width?
Answer: 77m
Step-by-step explanation:
The equation for the perimeter of a rectangle is: p = 2(length) + 2(width). We are given both perimeter and the length, so we can plug in these values to solve for what is missing.
332m = 2(89) + 2(width)
332m = 178 + 2(width)
154 = 2(width)
width = 77
Just combine like terms and get the variable (width) by itself on one side of the equation to solve. Hope this helps!
Answer:
width = 77 m
Step-by-step explanation:
Perimeter = sum of all sides
As a rectangle has 2 lengths and 2 widths making a total of four sides;
P = 2 ( l + w)
332 = 2 ( 89 + w)
332/2 = 89 + w
166 = 89 + w
166 - 89 = w
77 = w
Therefore, the width of the pool is 77 m
Write the coordinates of the vertices after a reflection over the x-axis.
The coordinate of the vertices (x,y) after a reflection over the x-axis is (x, -y). It is also known as a rule.
What are coordinates?
Coordinates are two numbers (Cartesian coordinates) or a letter and a number that point to a specific point on a grid known as a coordinate plane. A coordinate plane has four quadrants and two axes: x (horizontal) and y (vertical).
A reflection of a point, line, or figure in the x-axis entailed mirroring the image over the x-axis. In this case, the x-axis is referred to as the axis of reflection.
The rule for reflecting over the x-axis is to negate the value of each point's y-coordinate while keeping the x-value constant.
For instance, when point P with coordinates (7,3) is reflected across the x-axis and mapped onto point P', P"s coordinates are (7,-3). The x-coordinate for both points remained unchanged, but the y-coordinate changed from 3 to -3.
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. An integer a is said to be a type 0 integer if there exists an integer n such that a3n. An integer a is said to be a type 1 integer if there exists an integer n such that a-3n 1. An integer a is said to be a type 2 integer if there exists an integer m such that a - 3m + 2. * (a) Give examples of at least four different integers that are type 1 integers (b) Give examples of at least four different integers that are type 2 integers (c) By multiplying pairs of integers from the list in Exercise (9a), does it appear that the following statement is true or false? If a and b are both type 1 integers, then a b is a type 1 integer.
When n is known to be an integer, the formula for m also produces an integer. The assumption is confirmed once the necessary integer m was located.
what is integer ?Positive, negative, and zero are all examples of integers. As a result, integers include numbers like 0, 1, 2, 3, as well as -1, -2, and 3. There are no additional parts, such as fractions or decimals, in integers. As a result, fractional values like 3 1/2 and decimal numbers like -7.5 are NOT integers. All positive counting numbers, zero, and all negative counting numbers that count from negative infinity to positive infinity are included in the category of integers. The fundamental arithmetic operations are included in integer operations (addition, subtraction, multiplication and division). In mathematics, integers are any numbers that are either positive, negative, or zero, with the exception of fractions. As a result, operations on integers are simple.
given
Any whole number that is a multiple of 3 is a type 0 integer. Examples are 3, 6, 9, and 12.
n=1: 3(1)=3
n=2: 3(2)=6
n=3: 3(3)=9
n=4: 3(4)=12
When n is known to be an integer, the formula for m also produces an integer.
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Which of these is a correct step in constructing congruent angles?
A. Use a straightedge and draw an arc across the first arc from a leg of the given angle
B. Use a straightedge to measure the width between the points where the first arc cuts both legs of the given angle
C. Use a compass and draw an arc across both the legs of the given angle
D. Use a compass and join points to make the new leg of the congruent angle
Answer:
C. Use a compass and draw an arc across both the legs of the given angle.
Step-by-step explanation:
Noah ordered a meal delivery from a local restaurant. the cost of his meal, before tax, was $15.20. if the sales tax is 6.5%, what was the total cost of his meal? show or explain your thinking.
The total cost of the meal was $16.189.
What is the sales tax?
A sales tax is a consumption tax that is added to the price of goods and services. It is usually a percentage of the purchase price, and the percentage varies depending on the location and type of product or service.
We are trying to find the total cost of the meal including the sales tax. To do this, we need to calculate the amount of tax and add it to the cost of the meal.
The cost of the meal before tax is $15.20 and the sales tax rate is 6.5%. To find the amount of sales tax, we can multiply the cost of the meal by the sales tax rate as a decimal.
$15.20 x 0.065 = $0.989
The amount of sales tax is $0.989.
To find the total cost of the meal, we can add the amount of sales tax to the cost of the meal before tax.
$15.20 + $0.989 = $16.189
Hence, The total cost of the meal was $16.189.
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a board that is 12 feet long must be cut into two pieces that have lengths in a ratio of 3 to 2. find the legnths of the two pieces.
The first piece is 7.2 feet long, and the second piece is 12- 7.2 = 4.8 feet long.
The ratio of the two pieces is 3 to 2. This means that the length of the first piece is 3/5 of the total length, and the length of the second piece is 2/5 of the total length.
If we let x be the length of the first piece, the length of the second piece is:
12 - x
Since the ratio of the two pieces is 3 to 2, we can set up the equation:
(3/5) * 12 = x
Solving for x:
x = 7.2
So, the first piece is 7.2 feet long, and the second piece is 12- 7.2 = 4.8 feet long
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Is 1.5 in the same as one and a half in?
Yes 1.5 is the same as one and a half
Answer: Yes
Step-by-step explanation:
1/2 = a half 1/2 also = 0.5 1 + 0.5 = 1.5 or 1 and 1/2
Convert 46.1031 to Four significant figures
The required converted number is 46.10 which is 46.1031 rounded to four significant figures.
What is the place value strategy?Place value strategies are defined as math strategies that use to assist you in resolving your elementary math problems, using your place values, such as tens and hundreds.
To convert 46.1031 to four significant figures, we must first identify the four most significant digits. In this case, the four most significant digits are 46.10.
To express 46.1031 in four significant figures, we round it to 46.10.
Therefore, 46.1031 rounded to four significant figures is 46.10.
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consider an undirected graph with n vertices and m edges. what are the minimum and maximum number of connected components that the graph could have, respectively?
The maximum is N*(N-1)/2 and the minimum is N-1 if there are N vertices.
Proof:
Consider an adjacency matrix where each entry is either 1 (to denote the presence of an edge) or 0 (to indicate the absence of an edge) (to indicate the absence of an edge). Each row of the upper triangle must have at least one "1" in order for a graph to be connected.
By merely placing one 1 in each row of the upper triangle, the minimum is reached. Now, if the adjacency matrix is N by N, the first row will have N-1 elements in the upper triangle, the second row will have N-2 elements, the third row will have N, the fourth row will have N, and so on until the last row will have 0 items. Consequently, there are N total rows "with an upper triangle", each with only one 1. Hence, the number of edges in N-1.
The maximum occurs if every element of the upper triangle has one. Now, the number of elements in the upper triangle of the whole matrix is
1 + 2 + ... + (N-2) + (N-1) = N*(N-1)/2.
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Maddox has 21 to spend on souverniers as gift for his friends. He wants to buy each friend a keychain and a pin. The equation 3f + 4f =21 can be used to find f, the number of friends for which he can buy souvenirs
[tex]\huge\textbf{Hey there!}[/tex]
[tex]\mathsf{3f + 4f = 21}[/tex]
[tex]\textbf{COMBINE the LIKE TERMS}[/tex]
[tex]\mathsf{(3f + 4f) = 21}[/tex]
[tex]\mathsf{3f + 4f = 21}[/tex]
[tex]\mathsf{7f = 21}[/tex]
[tex]\textbf{DIVIDE 7 to BOTH SIDES}[/tex]
[tex]\mathsf{\dfrac{7f}{7} = \dfrac{21}{7}}[/tex]
[tex]\textbf{SIMPLIFY it!}[/tex]
[tex]\mathsf{f = \dfrac{21}{7}}[/tex]
[tex]\mathsf{f = 3}[/tex]
[tex]\huge\textbf{Therefore, your answer should be: }[/tex]
[tex]\huge\boxed{\mathsf{f = 3}}\huge\checkmark[/tex]
[tex]\huge\textbf{Good luck on your assignment \& enjoy}\\\huge\textbf{your day!}[/tex]
PLEASE HELP ASAP TYSM
Answer:
77 cups
Step-by-step explanation:
88 ounces/ day = 11 cups/ day
A week = 7 days
=> 11 x 7 = 77 cups/week
Can 8cm 5cm 10cm form the sides of a right-angled triangle?
No, the given measurement of the sides of a triangle does not forms a right angled triangle.
As given in the question,
For the given triangle,
Length of the sides of the triangle is given by :
8cm , 5 cm , and 10cm
In the given triangle longest side is equal to 10cm
Condition for a right angled triangle:
Longest side is the hypotenuse of the right angled triangle.
By Pythagoras theorem we have,
( Hypotenuse )² = ( Side1)² + ( Side 2)²
R.H.S. ( Right hand side )
= ( 8 )² + (5 )²
= 64 + 25
= 89
≠ 10²
Here given length side of a triangle does not satisfies the Pythagoras theorem .
Therefore, the given sides of a triangle is not representing a right angled triangle.
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A billiard ball starts 86\,\text{cm}86cm86, start text, c, m, end text from the corner pocket, as shown. The ball rolls 120\,\text{cm}120cm120, start text, c, m, end text in another direction, hits a rail, and rolls another 100\, \text{cm}100cm100, start text, c, m, end text into the pocket.
The angle is 45 degrees between the trajectories the ball takes before and after hitting the rail.
What are 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.
We have LHS = RHS (left hand side = right hand side) in every mathematical equation.
We have LHS = RHS (left hand side = right hand side) in every mathematical equation. To determine the value
To determine the value A statement is not an equation if it has no "equal to" sign.
A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation.
Hence, The angle is 45 degrees between the trajectories the ball takes before and after hitting the rail.
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What are the two types of graphs?
A Graph comprise of nodes and edges. The nodes are sometimes also denoted to as vertices and the edges are lines or arcs that joins any two nodes in the graph.
1. Finite Graphs: A graph is said to be limited if it has a finite number of vertices and a finite number of edges.
2. Infinite Graphs: A graph is said to be infinite if it has an unlimited number of vertices as well as an unlimited number of edges.
3. Trivial Graph: A graph is said to be trivial if a finite graph consists of only one vertex and no edge.
4. Regular Graph: A simple graph is called to be regular if all vertices of graph G are of equal degree.
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The senior class plans a school trip to washington dc. students should bring money for meals and souvenirs. they are told to bring at least $65 but no more than $135. write a compound inequality that represents the range of the amounts of money a student can bring.
The compound inequality represents the range of the amounts of money a student can brings $65 ≤ x ≤ $135
Start by setting up the inequality with the variable x, representing the amount of money a student can bring:
x
2. The inequality should be less than or equal to the maximum amount of money a student can bring, which is $135:
x ≤ 135
3. The inequality should also be greater than or equal to the minimum amount of money a student can bring, which is $65:
65 ≤ x
4. Combine the two inequalities to get the compound inequality:
65 ≤ x ≤ 135
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Which of the following graphs does NOT describe y as a function of x?
The second graph does not represent the y as a function of x.
What is the function?
A function is defined as a relation between a set of inputs having one output each. In simple words, a function is a relationship between inputs where each input is related to exactly one output.
The x value of a point where a vertical line intersects a function represents the input for that output y value.
If we can draw any horizontal line that intersects a graph more than once, then the graph does not represent a function because that y value has more than one input.
If we draw a line parallel to the y-axis it cuts the graph in more than one point.
So, that does not represent a function.
Here, we have given four graphs
Among this, the second graph intersects the x-axis two times,
Hence, the second graph does not represent y as a function of x.
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plsss helppppppppppppppppp
Answer:
hard
Step-by-step explanation:
ybfhf
Evaluate. 9^2+2⋅4−5
Please help (40 points)
Answer: 84
Step-by-step explanation:
9^2+2*4-5
Let's solve according to PEMDAS and calculate the exponent first.
That leaves us with
81+2*4-5
Next, it's time to multiply.
81+8-5
From then on, we can just add and subtract to get the final answer:
84
Which of the following is equivalent to the quadratic equation below after completing the square?
x² +6x-3=12
A. (x+6)² = 12
B. (x+3)² = 24
C. (x+6)² =9
D. (x+3)² = 9
(15 + y ) - (a+ u) }{3 ^ {2} -x}
After simplification, the value of expression is,
⇒ 15 + y - 9a + ax - 9u + ux
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;
The expression is,
⇒ (15 + y) - (a + u) (3² - x)
Now, Simplify the expression as;
⇒ (15 + y) - (a + u) (3² - x)
⇒ (15 + y) - (a + u) (9 - x)
⇒ (15 + y) - (9a - ax + 9u - ux)
⇒ 15 + y - 9a + ax - 9u + ux
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The length of a rectangle is twice its width.
The perimeter of the rectangle is 42 cm.
Label the diagram with the correct length and width for the rectangle.
cm
cm
દ
Answer: W = 7, L = 14
Step-by-step explanation: L = 2W. 2L + 2W = 42. Plug in L and we get 4W + 2W = 42. 6W = 42. W = 7. L = 14
Which best describes the offspring of protists?
always genetically identical to one parent
always genetically identical to both parents
never genetically identical to one parent
sometimes genetically different than both parents
The best description of the offspring of Protists is D. sometimes genetically different than both parents
How do Protists reproduce ?Asexual reproduction in protists includes methods such as binary fission, budding and fragmentation, in these methods the offspring are always genetically identical to one parent.
Sexual reproduction in protists can be through conjugation, meiosis, or syngamy, in this case the offspring are not always genetically identical to one or both parents. It is possible for the offspring to be genetically different from both parents due to the genetic recombination that occurs during sexual reproduction.
So, the statement that best describes the offspring of protists is "sometimes genetically different than both parents" as it depends on the type of reproduction method used.
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A company has 120 people who assemble toys. If 60% of these people assemble yoyo's, how
many more workers must transfered from other departments so that 70% of the people are assembling yo-yo's?
Answer:
12 people
Step-by-step explanation:
Total people in the company = 120
No. of People who assemble yo- yo's = 120 × (60/100
= 72
Now, we need 70% of the total people to assemble yoyo = 120 × (70/100)
= 84
We already have 72 people assembling yoyo,
No. of more people needed = 84 - 72 = 12
Hence, if we have 12 more people from other departments, 70% of the total people would be assembling yo-yo's.
Help me out pleasereeeee
Answer:
90°
Step-by-step explanation:
So we know that ∠PRM is 120° and that line m would be 180°, we would subtract 120 from 180 to get 60°.
So ∠PRQ is 60°.
All the angles of a triangle equals to 180°.
∠PQR is given as 30°. So we will need to add 60+30=90.
180-90=90. So ∠QPR is 90°.
There are several sets of three different numbers whose sum is 15 which can be chosen from {1,2,3,4,5,6,7,8,9}. How many of these sets contain a 5 ?
Answer is 4 of these sets contain a 5 in sets of three different numbers whose sum is 15
These problems are really brute force, there is no real clever way. I only just listed all possible combinations
HOWEVER, notice in answer.
5 1 9
5 2 8
5 3 7
5 4 6
Since ALL the sets contain a 5, we just subtract 5 from 15.
So we need TWO terms in a set and they add up to 10, and also are unique.
This is quite easy.
1 9
2 8
3 7
4 6
5 5 (does not work because cannot repeat digit)
thus , answer is 4 of these sets contain a 5 in sets of three different numbers whose sum is 15
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a teacher offers gift cards as a reward for classroom participation. the teacher places the gift cards from four different stores into a bag and mixes them well. a student gets to select two gift cards at random (one at a time and without replacement). each outcome in the sample space for the random selection of two gift cards is equally likely. what is the probability of each outcome in the sample space? startfraction 1 over 16 endfraction one-sixth one-fourth one-half
The probability of each outcome is 1/12 or 0.083.
The probability of each outcome in the sample space can be calculated using the formula for permutations. The formula for permutations is nPk = n!/(n-k)!. In this case n is the number of gift cards (4) and k is the number of gift cards to be selected (2). In this example, the sample space consists of 16 possible outcomes, and each outcome is equally likely. Thus, the probability of each outcome is 1/16. To calculate this, divide 1 by the total number of outcomes (16). This results in the probability of each outcome being 1/16.Therefore, nPk = 4P2 = 4!/2! = 12. Since each outcome is equally likely, the probability of each outcome is 1/12 or 0.083. This can be written as a fraction as 1/12 or as a decimal as 0.083.
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The area of the shaded region shown below is 214 units^2.
What's the value of x?
The value of x, considering the area of the rectangular regions, is given as follows:
x = 12.
How to obtain the area of a rectangle?The area of a rectangle is given by the multiplication of the two dimensions of the rectangle.
The area of the shaded region is obtained subtracting the area of the entire rectangle by the area of the inner white rectangle.
The area of the entire rectangle is given as follows:
(x + 8)(x + 5) = x² + 13x + 40.
The area of the white region is given as follows:
(x + 2)(x - 3) = x² - x - 6.
Hence the area of the shaded region is given as follows:
x² + 13x + 40 - (x² - x - 6)
x² + 13x + 40 - x² + x + 6
14x + 46.
As the area of the shaded region is of 214 units squared, the value of x is obtained as follows:
14x + 46 = 214
14x = 168
x = 168/14
x = 12.
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Residents in a city are charged for water usage every three months. the water bill is computed from a common fee,
along with the amount of water the customers use. the last water bills for 40 residents from two different
neighborhoods are displayed in the histograms.
The interval that contains the median water bill is D: $200 - $225.
The data in tabular form is as follows: ata :
Class interval ------- Frequency -------- Cummulative frequency
100 to 125, ----------- 1 --------------------1
125 to 150 -----------2--------------------3
150 to 175----------- 5 --------------------8
175 to 200----------- 10 ------------------18
200 to 225-----------13------------------ 31
225 to 250 ------------8 -----------------40
Median class = Cumulative frequency / 2
Cumulative frequency= 40
So
Median class = 40 / 2
Median class = 20
The class interval containing the 20th frequency is "200 - 225"
Therefore it is concluded that the interval which contains the median water bill is $200 - $225.
"
Complete question
A histogram titled Neighborhood Monthly water bill has monthly water bill (dollars) on the x-axis and frequency on the y-axis. 100 to 125, 1; 125 to 150, 2; 150 to 175, 5; 175 to 200, 10; 200 to 225, 13; 225 to 250, 8.
Which interval contains the median water bill?
$150–$175
$175–$200
$200–$225
$225–$250
"
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5 + 12.5v ≥ 170 what is v
Answer:
v ≥ 13.2 or v ∈ [13.2; ∞ )--------------------------
Given:
5 + 12.5v ≥ 170Solve it in below steps:
5 + 12.5v ≥ 170 Given12.5v ≥ 170 - 5 Subtract 5 from both sides12.5v ≥ 165v ≥ 165/12.5 Divide both sides by 12.5v ≥ 13.2 AnswerAnswer:
[tex] \sf \: v \geqslant 13.2[/tex]
Step-by-step explanation:
Now we have to,
→ find the required value of v.
The equation is,
→ 5 + 12.5v ≥ 170
Then the value of v will be,
→ 5 + 12.5v ≥ 170
→ 12.5v ≥ 170 - 5
→ 12.5v ≥ 165
→ v ≥ 165 ÷ 12.5
→ [ v ≥ 13.2 ]
Hence, the value of v is 13.2.
3(2x-7)= 3
What are the solutions
