Her teacher asked her to write the correct equation or inequality that matches the
graph. Laurie wrote the following: y ≤ 2x - 4. Her teacher marked her answer
incorrect. Explain the error that Laurie made and then write the correct solution.

Answers

Answer 1

The correct solution of Laurie's inequality expression is y ≥ 2x – 4

Given,

The inequality expression wrote by Laurie = y > 2x - 4

The graph of the inequality expression that completes this question is added as an attachment

From the attached graph, we can see that the line of the inequality is a thick or closed line

Thick and closed line are represented by the inequality signs ≤ and ≥

Since the upper region is shaded, we make use of ≥ inequality sign

Hence, the correct solution of Laurie's inequality expression is y ≥ 2x - 4

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Her Teacher Asked Her To Write The Correct Equation Or Inequality That Matches Thegraph. Laurie Wrote

Related Questions

If m ∠ F L G = ( 14 x + 5 ) ° and m ∠ H L G = ( 17 x − 1 ) ° , find m ∠ F L H .

Answers

The value of m ∠ F L H is 57°

How to determine the value

From the information given, we have that

m ∠ F L G and m ∠ H L G are congruent angles

Note that congruent angles are angles are equal or equivalent to each other

Given that;

m ∠ F L G = ( 14 x + 5 ) ∠ H L G = ( 17 x − 1 ) °

Equate the expression for both angles

14x + 5 = 17 x − 1

collect like terms

14x - 17x = -1 - 5

Subtract like terms

-3x = -6

Make 'x' the subject of formula

-3x/-3 = -6/-3

x = 2

But we know that;

m ∠ F L G = ( 14 x + 5 ) = 14(2) + 5 = 28 + 5= 33°

m ∠ F L H = 90 - 33 = 57°

Thus, the value of m ∠ F L H is 57°

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HELP! 25 POINTS

Factorise: √ab(x² +1) + x(a+b)

Answers

You can complete the square

lillian drew a scale drawing of a county park. the scale she used was 1 inch : 4 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing?

Answers

The picnic area is 20 inches wide in the drawing in her scale of 1 inch : 4 yards.

What is unitary method ?

Unitary method is a technique for first solving the value of a single digit unit and from there we can find the value of any given unit.

According to the given question lillian drew a scale drawing of a county park. the scale she used was 1 inch : 4 yards.

The picnic area is 80 yards wide in real life.

∴ The width of the picnic area in here drawing in inches will be

= 80/4 inches.

= 20 inches.

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Round 1.496 to the place value of the underlined digit.

Answers

Rounding off the given decimal to the nearest hundredth, tenth and ones place are 1.50, 1.5 and 2 respectively.

The given decimal number is 1.496.

We need to round off the given decimal number.

How to round off the decimal number?

There are some basic rules that need to be followed for rounding numbers.

We first need to know what our rounding digit is. This digit is the one that will ultimately be affected.After this, we need to check the digit to the right of this place which will decide the fate of the rounding digit.If the digit to the right is less than 5, we do not change the rounding digit. However, all the digits to the right of the rounding digit are changed to 0.If the digit to the right is 5 or more than 5, we increase the rounding digit by 1, and all the digits to the right of the rounding digit are changed to 0.

Now, rounding off 1.496 to the hundredth place is 1.50

Rounding off 1.496 to the tenth place is 1.5

Rounding off 1.496 to the ones place is 2

Therefore, rounding off the given decimal to the nearest hundredth, tenth and ones place are 1.50, 1.5 and 2 respectively.

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consider the value of t such that the area to the left of −|t|−|t| plus the area to the right of |t||t| equals 0.10.1.

Answers

We want to find the value of t such that the area to the left of −|t| plus the area to the right of |t| equals 0.1.

That is level of significance (α) = two-tail area = 0.1

what is a level of significance in research?

The significance stage (also called kind I mistakes rate or the extent of statistical importance) refers back to the chance of rejecting a null hypothesis that is in truth true. This amount stages from 0 (0.0) to at least one (1.zero) and is generally denoted through the Greek letter alpha (a).

What are the three levels of significance?

commonplace importance stages are 0.10 (1 risk in 10), 0.05 (1 risk in 20), and zero.01 (1 hazard in one hundred). The result of a speculation check, as has been seen, is that the null hypothesis is both rejected or now not.

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State whether the slopes would represent parallel lines, perpendicular lines, or neither.
-4 and 1/4
8 and -8
7 and 17
2 and 2

Answers

Answer:

neither

Step-by-step explanation:

i am goung to assume that the quarter really is just a quarter unit on the y-axis

Answer:

The line with a slope of [tex](-4)[/tex] is perpendicular to the line with a slope of [tex](1/4)[/tex] since the product of the two slopes is [tex](-1)[/tex].

Slope of [tex]8[/tex] and slope of [tex](-8)[/tex]: neither parallel nor perpendicular.

Slope of [tex]7[/tex] and slope of [tex]17[/tex]: neither parallel nor perpendicular.

The line with a slope of [tex]2[/tex] is parallel to the other line of slope [tex]2\![/tex] since the two lines have the same slope.

Step-by-step explanation:

Two lines in a cartesian plane are parallel to one another if and only if their slopes are equal. Two lines in a cartesian plane are perpendicular to one another if and only if the product of their slopes is [tex](-1)[/tex].

For example, a line with a slope of [tex]m[/tex] is parallel to another line of the same slope, [tex]m\![/tex].

Since [tex](-m)\, (1/m) = -1[/tex], a line with a slope of [tex](-m)[/tex] would be perpendicular to a line of slope [tex](1/m)[/tex].

Lenny makes 55,000 per year and gets annual raises of 20,000 how many years why will it take lenny and kenny to make the same annual salary

Answers

Answer:

14,987

Step-by-step explanation:

a bee flies at 20 feet per second directly to a flowerbed from its hive. the bee stays at the flowerbed for 14 ​minutes, and then flies directly back to the hive at 16 feet per second. it is away from the hive for a total of 19 minutes.

Answers

Distance, D = 5,760,000/2,160 = 2666.67 (approx)

What is time function?

The Excel DATE/TIME capabilities include the TIME Function. We can construct a time using distinct hour, minute, and second components with the aid of TIME.

We might want to date a report while performing financial analysis. In these circumstances, TIME can be used to transform a text string into a format that indicates the time in decimal form. Additionally, the function can be used to combine different values into a single time value.

formula= TIME (hour, minute, second)

distance = rate X time

D = RT

T = D/R

20 feet per second = 1200 feet per minute

16 feet per second = 960 feet per minute

[of minutes to flowerbed] + 14 minutes + [of minutes back to hive] = 19 minutes

(D/R) + 14 + (D/R) = 19

(D/R) + 14 + (D/R) = 19

(D/1200) + 14 + (D/960) = 19, This is the equation we can use to find the distance from the flowerbed to the​ hive.

(D/1200) + (D/960) = 5

(D(1200)(960))/1200 + (D(1200)(960))/960 = 5(1200)960

960D + 1200D = 5(1200)960

2,160D = 5,760,000

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the median of 6 consecutive integers is 9. what is the largest number

Answers

If the median of 6 consecutive integers is 9, the largest number is equal to 8.5.

Given the following data:

Median, M = 9.Number of consecutive integers, n = 6.

What is a median?

In Mathematics, a median can be defined as the middle number (center) of a sorted data set, which is when the data set is arranged in from the greatest to least or the least to greatest.

In Mathematics, the median of a data set is generally considered to be a better measure of center than the mean when there's an outlier in the data set.

For the largest number, we have:

Since consecutive integers must follow each other sequentially with a difference of 1, so the largest number is given by:

Largest number = Median + (n - 1)/2

Substituting the given parameters into the formula, we have;

Largest number = 6 + (6 - 1)/2

Largest number = 6 + (5)/2

Largest number = 6 + 2.5

Largest number = 8.5.

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charlene levington operates an oil change and tune-up service. she charges $33.95 per oil change. tune-up is $72.50 for a four-cylinder engine, $82.50 for a six-cylinder engine, and $92.50 for an eight-cylinder engine.

Answers

The charges for a week in which Charlene's facility did 35 oil changes and tuned 5 four-cylinder engines, and 7 six-cylinder will be $2313.25.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that charges per oil change are $33.95, charges for a four-cylinder engine $72.50, charges for a six-cylinder engine $82.50, and, charges for an eight-cylinder engine $92.50.

The total charges will be calculated as below:-

No oil changes done by Charlene = 35

price of 5 - four-cylinder engines = 5 × 72.50

= 362.50                                .....(1)

Price of 7 - six cylinder engines = 7 × 82.50

= 577.50                                ........(2)

Price of 2 - eight-cylinder engines = 2 × 92.50

= 185                                       ...........(3)

Now, adding (1), (2),(3)

= 362.50 + 577.50 + 185

= 1125                                        ...........(4)

Total charges for oil = 33.95 × 35

= 1188.25                                  ..........(5)

Add equations (4) and (5) to get the total charges.

= 1125 + 1188.25

= 2313.25

Therefore, the total charges will be $2313.25.

The complete question is given below:-

Charlene operates an oil change and tune-up service. she charges $33.95 per oil change. a tune-up is $72.50 for a four-cylinder engine, $82.50 for a six-cylinder engine, and $92.50 for an eight-cylinder engine. what are the charges for a week in which Charlene's facility did 35 oil changes and tuned 5 four-cylinder engines, and 7 six-cylinder?

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EVALUATING EXPI

Evaluate the expression below
when g = 10
6g²

Answers

Answer:

600

Step-by-step explanation:

Expression given:

6g²

Find its value when g = 10:

6g² = 6(10²) = 6(100) = 600

What is the length, in inches, of EG?

Answers

c² - a² = b²

30² - 5² = EG²

900 - 25 = 875

Square root of 875 = 29.58

Triangle HIJ, with vertices H(-9,-8), I(-5,-5), and J(-7,-3), is drawn on the
coordinate grid below.
what is the area, in square units, of triangle HIJ?

Answers

The area of triangle HIJ is 7 square units.

Given that, the vertices of triangle HIJ are H(-9,-8), I(-5,-5), and J(-7,-3) respectively. By using the vertices of triangle HIJ we have to evaluate its area in square units. So, let's procced to solve the question.

Area of ΔHIJ = 1/2|x₁(y₂-y₃)+x₂(y₃-y₁)+x₃(y₁-y₂)|

So, x₁ = -9, x₂ = -5, x₃ = -7 and y₁ = -8, y₂ = -5, y₃ = -3

Put all the listed values in the formula of area of triangle HIJ.

By using the above formula, we get

=1/2|-9(-5+3)+(-5)(-3+8)+(-7)(-8-(-5))|

=1/2|-9(-2)-5(5)+(-7)(-3)|

=1/2|18-25+21|

=1/2|14|

= 1/2 x 14

= 7

Therefore, the area of triangle HIJ is 7 square units.

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In the diagram below AB||CD what measure of ECF

Answers

Answer:

Step-by-step explanation:

135.8 minus 47.5

What is the equation of a line that has slope of -4/3 and passes through the point (12,-4)

Answers

Answer:

y = -4/3x + 12

Step-by-step explanation:

y - y1 = m (x - x1)

the y1 and x1 are where your coordinates go. The m is the slope.

So now we just plug it in.

y - (-4) = -4/3 (x - 12)

we can clean it up some more to make it into the y = mx + b format.

y + 4 = -4/3x - (-4/3)12

y + 4 = -4/3x + 16

y = -4/3x + 12

Find the derivative of the function by the limit process.
f(x)=(3)/(x-2)

Answers

Functions are expressed by writing a variable in terms of other variables known as the independent. The derivative of the given function is -3/(x-2)².

Derivative of a function

Given the function below;

f(x) = 3/x-2

Since it is a quotient, we can use the quotient rule to express the equation as shown:

let u = 3 and v = x -2

du/dx = 0 and dv/dx = 1

According to the rule;

dy/dx = (x-2)(0) - 3(1)/(x-2)²

dy/dx = 0-3/(x-2)²

dy/dx = -3/(x-2)²

Hence the derivative of the given function is -3/(x-2)²

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answer please !!!!!!!

Answers

Answer: 32, but I'm not sure

Step-by-step explanation:

Systems of equations with graphing

Answers

The correct option is A. x = 1(1/3) and y = 2(1/3) in the mixed fractions.

What is defined as the system of equations?

A system of equations is a collection of equations that all have the same variables.

If all of the equations are linear, you get a system of linear equations! To fix a system of equations, you must first determine the variable values that will solve all of the equations involved.A solution to an equation system is a set of variable values that satisfy all of the equations at the same time

Now, the given equation in the question are-

7x - y = 7      ........(equation 1)

and x + 2y = 6     ........(equation 2)

Multiplying both side of equation 1 with 2, we get

14x - 2y = 14         ........(equation 3)

Add equation 2 and 3.

x + 2y + 14x - 2y = 6 + 14

15x = 20

x = 4/3

x = 1(1/3)

Substitute the value of x in equation 1.

4/3 + 2y = 6

2y = 6 - 4/3

2y = 14/3

y = 7/3

or y = 2(1/3)

Therefore, the values for variables x and y are calculated as:

x = 1(1/3) and y = 2(1/3).

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Help me with this please , picture above

Answers

It’s A. No solutions.
The answer is option a.

The length of a rectangle is twice the width. The area of the rectangle is 90 square unites
A Which irrational number represents the length of each side of the square?
B Estimate the length and width of the rectangle

Answers

a) Both the length and the width of the rectangle are square roots of integers.

b) The length and the width of the rectangle are 6√5 units and 3√5 units, respectively.

How to analyze irrational numbers

Irrational numbers are numbers that not rational, that is, numbers that not of the form m / n, where m and n are integers and n is different of zero. Rational numbers may be integers or not.

Now, the statement indicates that the length and the width of rectangle have measures of 2 · x and x, respectively, and that the area of the rectangle is equal to 90 square units. The area formula is presented below:

90 = (2 · x) · x

90 = 2 · x²

x² = 45

x = √45

x = √(9 × 5)

x = √9 × √5

x = 3√5

a) Both the length and the width of the rectangle are square roots of integers.

b) The length and the width of the rectangle are 6√5 units (approx. 13.416 units) and 3√5 units (approx. 6.708 units), respectively.

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Write a simplified expression for the area of the rectangle below.​

Answers

The simplified expression for the area of the given rectangle is 12x + 40

As per the given figure:

The length of the rectangle given in the question: 3/5x + 2

The breadth of the rectangle given in the question: 20

The formula for the area of a rectangle is given by:

Area of rectangle  = Length of the rectangle * Breadth of the rectangle

Area of rectangle  = (3/5x +2)*20

=(3x + 10)/5 * 20

= (3x + 10) * 4

= 12x + 40

Area of rectangle  = 12x + 40

So, the simplified expression for the area of the rectangle with the given length and breadth is 12x + 40

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whats the transformation

Answers

Answer:translation

Step-by-step explanation:

Translation

It move from one spot to another

Reasons why the other answers are incorrect:

- Rotation: you do not see the shape turning (rotating) in any direction. It retains it’s points in the same position.

- Reflection: the shape is not reflected, it does not flip horizontally. This is shown with the same points in the same location

- Dilation: the shape appears to be the same size

the names of 0 employees are written on 0 cards. the cards are placed in a​ bag, and three names are picked from the bag. what sampling technique was​ used?

Answers

The names of 0 employees are written on 0 cards. the cards are placed in a​ bag, and three names are picked from the bag - here simple random sampling technique was used.

What is simple random sampling?

Basic irregular testing can provide you with an extremely precise image of how your motto performs with the typical individual, yet it won't give you nitty gritty data about unambiguous gatherings. Utilizing straightforward irregular testing permits scientists to make speculations about a particular populace and leave out any inclination. This can assist with deciding how to settle on future choices. It has been expressed that "the rationale behind straightforward arbitrary examining is that it eliminates predisposition from the choice method and ought to bring about delegate tests".

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How do you evaluate a function?​

Answers

Answer:

evaluating a function means finding the value of f(x) or f(y).......

Answer:

replace all the x variables with whatever x has been assigned

Step-by-step explanation:

evaluating a function means finding the value of f (x) = or y equals that corresponds to a given value of x to do this simply replace all the x variables with whatever x has been assigned for example if we are asked to evaluate f (4) then x has been assigned the value of 4

Question 10: Andrew is going to fill an empty swimming pool.
Andrew fills the swimming pool with water at a constant
rate of 2.1 litres per second.
Given 1m³= 1000 litres, estimate how long it takes to fill the pool.

7.15m
21m
1.9m

Answers

The swimming pool will take 135850 seconds to fill with water.

Given the dimensions of the pool are:

7.15 m

21 m

1.9

The swimming pool is being filled with water at a constant rate of 2.1 liters per second.

hence the volume of the swimming pool is :

volume = 7.15 × 21 × 1.9

volume = 285.285 m³

convert from meters to liters.

volume = 285.285 × 1000

= 285285 liters.

to find out the time required to fill the pool, we need to divide the volume by the flow rate.

⇒ 285285 ÷ 2.1

= 135850

hence the swimming pool will take 135850 seconds to fill with water.

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there are four even integers in the top five rows of pascal's triangle. how many even integers are in the top 10 rows of the triangle?

Answers

There are 22 even numbers in the top 10 rows.

Pascal's triangle is the triangular array of numbers that begins with 1 on the top and with 1's running down the two sides of a triangle.

The tip of the triangle starts with 1 and the 1 starts continuing to both the ends of the triangle in each row and in between there is the sum.

For example:

                  1

                1   1

             1    2   1

         1   3    3     1

In the above manner, it continues.

now, for 10 rows the pascal triangle will be:

                       1

                     1   1

                  1    2   1

              1   3    3     1

          1   4    6      4      1

      1     5   10    10    5     1  

    1    6    15   20   15    6    1

  1    7    21    35   35  21    7    1

1   8     28   56   70   56   28   8  1

1   9   36    84   126  126   84  36 9  1

for five rows in the top, the even numbers are 2, 4, 6, 4 which are 4 in total.

for 10 rows in the top, the numbers are 2, 4, 6, 4, 10, 10, 6, 20, 6, 8, 28, 56, 70, 56, 28, 8, 36, 84, 126, 126, 84, 36

Hence there are 22 even numbers in the top 10 rows.

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a man and a woman, both with brown eyes (bb), have a child. what is the percentage chance that the child will have blue eyes?

Answers

Answer and Explanation:
If a man and a woman, both with brown eyes (Bb), have a child, then the percentage chance that the child will have blue eyes will be 25%.

b. For mixing a spray to kill weeds, Howard is to
use 2 1/2 tablespoons for each gallon of water.
How many tablespoons of the spray will he
need to use for 5 gallons of water.

Answers

The 12.5  tablespoons of the spray will he need to use for 5 gallons of water.

What is arithmetic?

Arithmetic is the branch of mathematics that deals with the study of numbers using various operations on them. Basic operations of math are addition, subtraction, multiplication and division. These operations are denoted by the given symbols.

Given:

For mixing a spray to kill weeds, Howard is to use 2 1/2 tablespoons for each gallon of water.

We have to find How many tablespoons of the spray will he need to use for 5 gallons of water..

According to given question we have

2 1/2 =5/2 tablespoons for each gallon of water.

5/2 tablespoons =1 gallon of water.

1 gallon of water=5/2 tablespoons

5 gallons of water=5/2*5 tablespoons

5 gallons of water=25/2 tablespoons=12.5  tablespoons

Therefore, the 12.5  tablespoons of the spray will he need to use for 5 gallons of water.

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A bird flies from the bottom of a canyon that is 51 3/10 feet below sea level to a nest that is 737 1/10 feet above sea level.

Answers

685.8 feet

Sea level is a reference to elevation of the ocean or land interface called the shoreline.

Land that is above this elevation is higher than sea level and lower is below sea level.

The bottom of the canon is at 51 3/10 below the sea level which is also written as -51 3/10 ……(1)

The nest is at 737 1/10 feet above the sea level so it is expressed as

737 1/10  ….(2)

To find the distance between the bottom of the canyon and the bird’s nest we subtract (2) from (1)

737.1 – 51.3

= 685.8 feet

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Test each number with substitution to see which one is the correct solution for the equation.

Is -0.5, 0.5 or 4.5 the correct solution for the equation -6x+15=-12

Answers

the correct solution for the equation is 4.5

the correct solution for the equation is 4.5
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Then, take the point of view of a colonist, and describe how each action might hurt you. Expressed as a product of its prime factors in index form, a number n is n = 3 times 5 squared times x cubed. express 5n squared as a product of prime factors in index form. give your answer in terms of x. The parking garage charges $3 per hour to park for two hours or less.The garage charges $3 for each additional hour of parking, up to andincluding 5 hours. If a car uses the parking garage for more than 5hours, there is a flat fee of $20.Fill in the missing domain values for the following situation.3x(Value 1) x 2f(x) = 6 4(x - 2) (Value 2) < r 520x> (Value 3)Value 1 =Value 2 =Value 3 Which detail creates the most tension in the exposition of the story?Select the correct detail in the passage.[1] It was still too hot to play outdoors. They had had their tea, they had been washed and had their hair brushed, and after the long day of confinement in the house that was not cool, but at least a protection from the sun, the children strained to get out. Their faces were red and bloated with the effort, but their mother would not open the door, everything was still curtained and shuttered in a way that stifled the children, made them feel that their lungs were stuffed with cotton wool and their noses with dust and if they didn't burst out into the light and see the sun and feel the air, they would choke. 1. un vestido corto... una falda2. unas vendedoras malas... unos dependientes3. una corbata barata... unas camisas4. un hombre muy pobre... una mujer muy5. una cartera nueva... un cinturn6. unos trajes hermosos... unos jeans7. unos calcetines blancos... unas medias8. un impermeable caro... unos suteres who were the first europeans to make settlements in north america? irish irish spanish spanish vikings vikings portuguese When an invasive species is introduced into a new habitat where it has no natural predators, it can quickly populate. Which best predicts the effect this will have on the native species of the habitat?A.The native species will compete for resources in the habitat.B.The native species will thrive in the habitat.C.The native species will remove all of the resources in the habitat.D.The native species will destroy the habitat. Dwayne is selling hamburgers and cheeseburgers. He has 100 burger buns. Each hamburger sells for $3, and each cheeseburger sells for $3.50. Which system of inequalities represents the number of hamburgers, h, and the number of cheeseburgers, c, he must sell to have sales of at least $80? h + c 803h + 3.5c 100 h + c 803h + 3.5c 100 h + c 1003h + 3.5c 80 h + c 1003h + 3.5c 80