Answer:
3x - 2(x +1) =-2
3x - 2x - 2 =-2
x = - 2 +2
x = 0
hope it helps
49 is 73% of what number?
Answer:
67.1
Step-by-step explanation:
Writing the statement '49 is 73% of what number?' where x is the number we are trying to find:
[tex]49 = 73\% \: of \: x[/tex]
To find the percentage of a number, we multiply the number by the decimal equivalent of the percentage, so can be rewritten as:
[tex]49 = \frac{73}{100} \times x[/tex]
[tex]49 = 0.73x[/tex]
[tex] \frac{49}{0.73} = x[/tex]
[tex]x = 67.1 \: rounded \: to \: 3 \: signifiant \: figures[/tex]
What is not an ordered pair?
The pairs which cannot be written or expressed in the notation of (a,b) and do not follow a specific order are not ordered pairs .
What are Ordered Pairs ?
The Ordered Pair is defined as a pair of elements that have specific importance for order of their placements. Ordered pairs are used in coordinate geometry to represent a point on a coordinate plane.
So , the numbers that do not follow the specific order of placements cannot be called as Ordered Pairs .
Two Ordered Pairs [tex](a_{1} ,b_{1} )[/tex] and [tex](a_{2} ,b_{2} )[/tex] can be considered as equal if and only if [tex]a_{1} =a_{2}[/tex] and [tex]b_{1} =b_{2}[/tex] .
Every point on Coordinate Plane is represented by ordered pair (x, y) where "first element x" is called x coordinate and "second element y" is called y-coordinate.
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True or False: an equilateral triangle is always an acute triangle, but an acute triangle is never an equilateral triangle.
True
False
Answer: False.
Step-by-step explanation: An equilateral triangle is always an acute triangle because all of its angles are congruent (equal) to 60 degrees. An acute triangle is a triangle with all its angles are less than 90 degrees, so an equilateral triangle with all angles of 60 degrees is an acute triangle. An acute triangle doesn't necessarily have to be an equilateral triangle.
answer : the answer is false
Demond' GCSE math exam i next week. A part of hi reviion he attempted 31 quetion on hi leat favourite topic of percentage. He got 21 quetion fully right on the firt attempt. Two day later he tried all 31 quetion again and thi time got 29 correct. A) What percentage of quetion did he get correct on hi firt attempt?
b) What percentage of quetion did he get correct on hi econd attempt?
c) What i the percentage improvement in Demond' reult?
Percentage of questions attempt by Desmond's in his math's exam is given by :
a) In his first attempt percentage of question answered by Desmond is 67.74%.
b) In his second attempt percentage of question answered by Desmond is 93.55%.
c) Improvement in the percentage of question answered by Desmond is 25.81%.
As given in the question,
Total number of questions attempted by Desmond = 31
Number of questions fully right in first attempt of Desmond = 21
a ) Correct percentage of questions in the first attempt
= ( 21 / 31 ) × 100
= 67.74%
b) Number of questions fully right in second attempt of Desmond = 29
Correct percentage of questions in the second attempt
= ( 29 / 31 ) × 100
= 93.55%
c ) Improvement in the percentage comparing both the attempts
= ( 93.55 - 67.74 ) %
= 25.81%
Therefore, the percentage of questions attempt by Desmond is given as follow :
a) In his first attempt percentage of question answered by Desmond is 67.74%.
b) In his second attempt percentage of question answered by Desmond is 93.55%.
c) Improvement in the percentage of question answered by Desmond is 25.81%.
The above question is incomplete , the complete question is :
Desmond's GCSE math's exam is next week. As part of his revision he attempted 31 questions on his least favorite topic of percentages. He got 21 questions fully right on the first attempt. Two days later he tried all 31 questions again and this time got 29 correct.
a) What percentage of question did he get correct on his first attempt?
b) What percentage of question did he get correct on his second attempt?
c) What is the percentage improvement in Desmond's results?
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Find the distance between the points (2,10) and (10,10).
Answer: The distance is 8.
The amount of potage placed on a firt-cla letter depend on the weight of the letter
58 2/3 % as a fraction in simplest form
Answer:
29/50
Step-by-step explanation:
Simplify the expression to a polynomial in standard form: (2x+3)(3x^2-6x+2) (2x+3)(3x 2 −6x+2)
Answer:
6x^3 + x^2 - 12x^2 - 18x - 6x - 6 = 6x^3 - 18x^2 - 12x - 6.
Step-by-step explanation:
simplify the expression (2x+3)(3x^2-6x+2)
First, we'll use the distributive property to expand the product of the two binomials:
(2x+3)(3x^2-6x+2) = 2x(3x^2-6x+2) + 3(3x^2-6x+2)
Next, we'll expand the product of each term in the first binomial with each term in the second binomial, using the distributive property again:
= 2x3x^2 + 2x(-6x) + 2x2 + 33x^2 + 3*(-6x) + 3*2
We can now simplify the resulting terms by combining like terms and combining the coefficients:
= 6x^3 -12x^2 + 4x + 9x^2 -18x + 6
we will combine the like terms
= 6x^3 - 18x^2 + 4x + 6
This is our final expression in standard form
what is the slope of the line connecting (5,1) and (-1,3)? Please exlplain how you got the answer. I will mark you brainliest.
The slope of the line connecting the points (5,1) and (-1,3) will be - 1/3.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The slope of the line is given as,
m = (y₂ - y₁) / (x₂ - x₁)
The points are given below.
(5, 1) and (-1, 3)
The slope of the line is given as,
m = (3 - 1) / (- 1 - 5)
m = 2 / (-6)
m = - 1/3
The slope of the line connecting the points (5,1) and (-1,3) will be - 1/3.
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Which best describes the triangle or triangles if anything that can be formed with sides measuring 60 cm 100 cm times 40 cm? 
The statement which best describes the triangle or triangles, if any, that can be formed with the sides measuring 60 centimeters, 100 centimeters, and 40 centimeters include the following: A. No triangle.
What is the Triangle Inequality Theorem?In Mathematics, the Triangle Inequality Theorem is represented by this mathematical expression:
b - c < a < b + c
Where:
a, b, and c represent the side lengths of this triangle.
By applying the Triangle Inequality Theorem to the side lengths of this triangle, the number of triangles that can be formed would be determined as follows:
60 + 40 > 100 (False and no triangle).
In conclusion, we can logically deduce that the two (2) short side lengths does not exceed the long side lengths and as such no triangle can be formed with the sides measuring 60 centimeters, 100 centimeters, and 40 centimeter.
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Complete Question:
Which best describes the triangle or triangles, if any, that can be formed with the sides measuring 60 centimeters, 100 centimeters and 40 centimeter?
A. No triangle
B. One unique scalene triangle
C. infinitely small similar scalene triangles
D. Two unique scalene triangles.
Solving systems of equations by elimination worksheet
1. y = 6x-11
-2x-3y = -7
2. 2x-3y = -1
y = x-1
1. steps to find the value of x
The first step is to equalize the form of the equation.
y = 6x-11 = -6x+y= -11
-2x-3y = -7
thus becoming:
-6x+y= -11
-2x-3y = -7
Then eliminate y:
-6x+y= -11 | times -3| becomes 18x-3y=33
18x-3y=33
-2x-3y = -7
y in the equation can be eliminated to become:
20x=40
x=40/20
x=2
steps to find the value of y:
The first step is to equalize the form of the equation.
y = 6x-11 = -6x+y= -11
-2x-3y = -7
thus becoming:
-6x+y= -11
-2x-3y = -7
Then eliminate x:
-2x-3y = -7 | multiplied by 3| becomes -6x-9y=-21
-6x+y= -11
-6x-9y=-21
x in the equation can be eliminated to become:
10y=10
y=-10/10
y=1
2.
1. steps to find the value of x
The first step is to equalize the form of the equation.
2x-3y = -1
y = x-1 becomes -x+y=-1
thus becoming:
-2x-3y = -1
-x+y=-1
Then eliminate y:
-x+y=-1| times -3| to 3x-3y=3
-2x-3y = -1
3x-3y=3
y in the equation can be eliminated to become:
-5x=-4
x=4/5
Steps to find the value of y:
The first step is to equalize the form of the equation.
2x-3y = -1
y = x-1 becomes -x+y=-1
thus becoming:
-2x-3y = -1
-x+y=-1
Then eliminate x:
-x+y=-1| multiplied by 2| becomes -2x+2y=-2
-2x-3y = -1
-2x+2y=-2
x in the equation can be eliminated to become:
-5y=1
y=-1/5
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write an equation of the perpendicular bisector of the segment with endpoints G (-2,0) and H(8,-6)
The equation of the perpendicular bisector of the segment with endpoints G (-2,0) and H(8,-6) would be, y = -(3/4)x + (9/2)
What is Perpendicular bisector of the segment?
A perpendicular bisector is a line that cuts another line segment through the junction point at a straight angle. As a result, a perpendicular bisector always cuts a line segment through its midway. The term bisect means to divide equally or uniformly.
The midpoint of the segment GH is the point (3,-3).
The slope of the line perpendicular to GH is the negative reciprocal of the slope of GH, which is -6/8 = -3/4
The slope-intercept form of the equation of the line is y = mx + b, where m is the slope and b is the y-intercept.
The point-slope form of the equation of the line is y - y1 = m(x - x1)
So we have
y - (-3) = (-3/4)(x - 3)
y + 3 = (-3/4)x + (9/2)
We can find the equation of the perpendicular bisector of the segment G(x1, y1) and H(x2, y2) by using the midpoint of the segment, (x1 + x2)/2, and (y1 + y2)/2, and the slope of the segment, (y2 - y1)/(x2 - x1)
so our final equation is y = -(3/4)x + (9/2)
Therefore, equation of the perpendicular bisector of the segment with endpoints G (-2,0) and H(8,-6) would be, y = -(3/4)x + (9/2)
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Examine the triangle below, solve for x, rounded to two decimal places
On solving the question, The value of x in Right Angle Triangle is .The value of x is .[tex]16\sqrt{2}[/tex]
What is a Right Angle Triangle ?A right triangle, also known as a right-angled triangle, right-perpendicular triangle, orthogonal triangle, or previously rectangled triangle, is a triangle with one right angle, or two perpendicular sides. The foundation of trigonometry is the relationship between the sides and various angles of the right triangle.
A right triangle's three sides are related in Euclidean geometry by the Pythagorean theorem, also known as Pythagoras' theorem. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse.
In the triangle 2 angles are respectively.
The third angle is = 45
The triangle is issosceles triangle
So the side which is not x is 16.
Now by using pythagorus Theorem
The value of x is .[tex]16\sqrt{2}[/tex]
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3 years ago, the residents of Planet X found a black hole leading to another galaxy. Since then,
they have been leaving Planet X at a rate of 120 residents per year.
The following equation describes this situation:
-120-3=-360
What does - 360 tell us?
Choose 1 answer:
A total of 360 residents left Planet X in the past three years. or
360 residents left Planet X each year. or
None of the above
A aggregate of 360 residers left Planet X in the once three times.
What's Linear Equation?
A direct equation is an algebraic equation of the form y = mx b, where m is the pitch and b is the y- intercept, and only a constant and a first- order( direct) term are included. The variables in the antedating equation are y and x, and it's sometimes appertained to as a" direct equation of two variables."
The point- pitch form, standard form, and pitch- intercept form are the three main types of direct equations.
At a pace of 120 occupants every time, they've been departing earthX.
So, by the formuls;
- 120x 3 = 360
thus, A aggregate of 360 residers left Planet X in the once three times.
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A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below.
Which two atoms are of elements in the same group in the periodic table?
Answer:
Step-by-step explanation:
the way to determine if two atoms are of elements in the same group in the periodic table is to look at the number of valence electrons in the outermost energy level of the atom. Elements in the same group have the same number of valence electrons. For example, elements in Group 1 have 1 valence electron, elements in Group 2 have 2 valence electrons, and so on.
It's worth mentioning that the group in the periodic table is also known as family or column.
3. Karrie was late to work 14 times last year.
she worked 250 days last year, what perc
of the days was she late?
On solving the provided question, we can say that percentage of the days was she late = 14/250 * 100 = 5.6%
What is percentage?A percentage in mathematics is a figure or ratio that is stated as a fraction of 100. The abbreviations "pct.," "pct," and "pc" are also occasionally used. It is frequently denoted using the percent symbol "%," though. The amount of percentages has no dimensions. With a denominator of 100, percentages are basically fractions. To show that a number is a percentage, place a percent symbol (%) next to it. For instance, if you correctly answer 75 out of 100 questions on a test (75/100), you receive a 75%. To compute percentages, divide the amount by the total and multiply the result by 100. The percentage is calculated using the formula (value/total) x 100%.
Karrie was late to work = 14 times last year.
she worked = 250 days last year
percentage of the days was she late = 14/250 * 100 = 5.6%
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Boden's account has a principal of $800 and a simple interest rate of %3.2 Complete the number line. How much money will be in the account after 4 years, assuming Boden does not add or take out any money?
Answer:
The simple interest is calculated by multiplying the principal amount by the interest rate and the number of years.
Simple Interest = Principal x Interest Rate x Time
The simple interest on Boden's account is:
800 x 3.2% x 4 = 800 x 0.032 x 4 = $256
To find the total amount in the account after 4 years, we add the interest to the principal:
800 + 256 = $1056
So, Boden's account will have $1056 after 4 years.
Evaluate the expression for m = 2
–5(m − 14) − m2 =
Answer: 56
Step-by-step explanation:
-5(2-14)-2^2
REMEMBER PEMDAS
-5(2-14)-> -10+70-2^2
-10+70-4=56
PLEASE HELP ME it’s sooo many questions
Answer:
D
The parallelogram proves that D is correct
edward deposited 9000 into a savings account 5 years ago the simple interest rate is 2 how much did edward earn interest
Answer:
900
Step-by-step explanation:
[tex]I=Prt=(9000)(0.02)(5)=900[/tex]
what expression is equivalent to 6(x+2y) + 3 + 4y + 5
Answer:
6(x+2y) + 3 + 4y + 5
6x+12y+3+4y+5
Simplified: 6x+16y+8
Step-by-step explanation:
WILL MAKE BRAINLIEST !!!Solve each quadratic function using the quadratic formula. Remember to get the equation equal to zero if it’s not already and leave the answer in its simplest form.
Therefore , solving the provided question we cans say that
quadratic equation - x^2-5x-4 = 0 and x = 1 , 3
What is quadratic equation?A quadratic equation is x ax2+bx+c=0, which is a quadratic polynomial in a single variable. a 0. The Fundamental Theorem of Algebra ensures that it has at least one solution since this polynomial is of second order. Solutions may be simple or complicated. An equation that is quadratic is a quadratic equation. This indicates that it has at least one word that has to be squared. The formula "ax2 + bx + c = 0" is one of the often used solutions for quadratic equations. where are numerical coefficients or constants a, b, and c. where the variable "X" is unidentified.
Here,
Given :
we have
quadratic equation -
x^2-5x-4 = 0
x(x-1) -3(x-3) =
(x-1)(x-3) = 0
x = 1 , 3
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PLS ANSWER ASAP ILL GIVE BRAINLIEST AND A LOT OF POINTS PLEASEEE THANK YOU
Answer:
25√x^21
Step-by-step explanation:
x 21/25
9th and 10th Graders 11th and 12th Graders
Turkey 112 150
Ham 64 58
Vegetarian 24 32
A segmented bar chart was created showing the lunch preference by grades. What percent would the bar for 11th and 12th graders show for preferring a vegetarian sandwich?
Answer:
12.73%
Step-by-step explanation:
24 + 32 = 56(veggie sandwich)
112 + 150 = 262
262 + 64 = 326
326 + 58 = 384
384 + 56(veg sand) = 440
440 = total number of students
Divide 100 by 440 and you get 0.23
Multiply that by 56 and you get 12.73%
:)
Which graph BEST represents the equation:
y=10−2x
the equation 10-2x is plotted below.
What is equation straight line?
Y = mx + c is the general equation for a straight line, where m denotes the line's slope and c the y-intercept. It is the version of the equation for a straight line that is used most frequently in geometry. There are numerous ways to express the equation of a straight line, including point-slope form, slope-intercept form, general form, standard form, etc. A straight line is a geometric object with two dimensions and infinite lengths at both ends. The formulas for the equation of a straight line that are most frequently employed are y = mx + c and axe + by = c. Other versions include point-slope, slope-intercept, standard, general, and others.
The equation of the line y=10−2x
m=-2
intercept = 10
Hence the equation 10-2x is plotted below.
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Graph the line with slope -3 passing through the point (4, - 1)
A graph of the line with slope -3 passing through the point (4, -1) has been plotted in the image attached below.
What is the point-slope form?Mathematically, the point-slope form of a straight line can be calculated by using this mathematical expression:
y - y₁ = m(x - x₁) or y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)
Where:
m represents the slope.x and y are the points.From the information provided above, we have the following slope and data points on the line:
Points = (4, -1).Slope, m = -3At point (4, -1), a linear equation of this line can be calculated in point-slope form as follows:
y - y₁ = m(x - x₁)
y - (-1) = -3(x - 4)
y + 1 = -3x + 12
y = -3x + 12 - 1
y = -3x + 11
Next, we would use an online graphing calculator to plot the above linear equation in slope-intercept form as shown in the graph attached below.
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Is it possible to define all terms in geometry?
No, it is not possible to define all terms in geometry. The point, line, and plane are only a few of the many undefined terms in geometry. All other concepts in geometry may be defined from these three undefined terms.
Who named geometry?The father of geometry, Euclid was a brilliant mathematician. Learn more about Euclid and the history of some of the math ideas we use today to see how important they have become.
The terms "ge" and "metria," which both imply "measuring," are the origins of geometry. For more than 2000 years, the Greeks' method of approaching geometry has served as the foundation for geometry.
The study of various mathematical or actual-world forms, figures, and sizes is known as Geometry. We learn about various angles, transformations, and similarities between the forms in geometry. The point, line, and plane are the main building blocks of geometry.
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No, it is practically not possible to define all terms in geometry. Points, lines, and planes are just a few of the many terms not defined in geometry.
Which term is not defined in geometry?The point, line, and plane are only adequately described by examples and descriptions, hence they are regarded as undefined words in geometry. Give the points, lines, and planes a name. Points that are on the same line are known as collinear points.
A legal document's definitions are often located at the outset, or at the start of a standalone portion like a schedule or section.
The study of different mathematical or real-world shapes, sizes, and figures is known as Geometry. You will learn about points, lines, planes, angles, parallel lines, triangles, similarity, quadrilaterals, transformations, circles, and area in geometry.
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The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who is 40 or older is chosen at random, what is the probability that they have completed a bachelor's or master's degree? Round your answer to the nearest thousandth.
....................
What is the formula of a pair?
An ordered pair is a set of two values, (x,y), that represents a point on a coordinate plane. The x-coordinate represents the horizontal position and the y-coordinate represents the vertical position. The formula for an ordered pair is (x,y). where x and y are the coordinates.
Albert has $30 to buy pies and cupcakes for a party. He can buy 2 pies for $8.00 each and wants to use money he has left to buy as many cupcakes as he can
Answer: Depends on how much a cupcake costs
Step-by-step explanation: If Albert has $30 and spends it on two $8 pies, he has $14 left. If cupcakes are $1 each, then he can get 14 cupcakes. If cupcakes are $0.50 each, then he can get 28 cupcakes. If cupcakes are $0.25 each, then he can get 56 cupcakes.