Answer:
{-14,-26}
Step-by-step explanation:
lx+20l=6
So x+20 is either 6 or -6
x=6-20=-14
x=-6-20=-26
Can 8 7 and 15 form a triangle?
It is not possible to construct a triangle whose sides are 8 cm 7 cm and 15 cm because the sum of two sides(8 cm and 7 cm) are equal to third side(15 cm).
In the given question, we have to check that it is possible to construct a triangle whose sides are 8 cm 7 cm and 15 cm.
The sum of the two sides must always be greater than the third side in order to determine whether or not the given sides may form a triangle.
To check this we firstly add the 8 and 7
8 + 7 = 15
15 = 15
Now we add 8 and 15
8 + 15 > 7
23 > 7
Now we add 7 and 15
7 + 15 > 8
22 > 8
It is not possible to construct a triangle whose sides are 8 cm 7 cm and 15 cm because the sum of two sides(8 cm and 7 cm) are equal to third side(15 cm).
To learn more about construct a triangle link is here
brainly.com/question/13065899
#SPJ4
Which of the following is a solution of equation 3x² 13x 14 0?
The solution of the given equation 3x² + 13x + 14 = 0 is given by :
option b . x = -2.
As given in the question,
Given equation is equal to :
3x² + 13x + 14 = 0
Solve the given equation by method of splitting middle term we get,
3x² + 13x + 14 = 0
⇒ 3x² + 6x + 7x + 14 = 0
⇒ 3x ( x + 2 ) + 7 ( x + 2 ) = 0
⇒ ( 3x + 7 ) ( x + 2 ) = 0
⇒ ( 3x + 7 ) = 0 or ( x + 2 ) = 0
⇒ x = -7/3 or x = -2
From the given options:
Option b . x = -2 is the solution of the equation 3x² + 13x + 14 = 0.
Therefore, the solution of the given equation 3x² + 13x + 14 = 0 is equal to : option b. x = -2.
The above question is incomplete, the complete question is:
Which of the following is one of the solution of equation 3x² + 13x + 14 = 0?
a. x = 2 b. x = -2 c. x = 3 d. x = -3
learn more about equation here
brainly.com/question/29538993
#SPJ4
9=24
(15. Jake and Adam are at the arcade. So far, Jake has spent a total of $4.00 by playing skee-ball 8
times and air hockey 4 times. Adam has spent a total of $6.50 by playing skee-ball 10 times and air
hockey 8 times.
a. How much does it cost to play skee-ball?
b. How much does it cost to play air hockey?
By linear equation, the cost of playing skee ball is $0.25 and that of air hockey is $0.50.
How are simultaneous linear equations solved?Elimination and substitution are the two most frequently used techniques for simultaneous linear equations. Some questions have a more obvious solution, frequently because it makes solving the equations easier, while others leave the method selection up to the individual.
Loss by Jake=$4
Loss by Adam=$6.50
let,
hockey played=y
skee-ball played=x
for Jake,
8x+4y=4
for Adam,
10x+8y=6.50
solving both equation simultaneously,
we will get
x=1.5/6=0.25
y=0.50
To know more about linear equation visit:-
brainly.com/question/11897796
#SPJ1
What is the difference between X₁ and X₁?
A. X₁ is a random variable, and X₁ is a specific numerical value.
B. X₁ is a random variable, and x₁ is a specific numerical value.
C. There is no difference. They are both random variables.
D. There is no difference. They are both specific numerical values.
The difference between X₁ and X₁ is "X₁ is a random variable, and X₁ is a specific numerical value".
Any variable whose value is uncertain or any function that values each result of an experiment is referred to as a random variable. Random variables are frequently identified by letters and fall into one of two categories: discrete variables, which have definite values, or continuous variables, which can take on any value within a continuous range.
A parameter's estimated value in numbers, specifically. The sample mean is the most accurate estimate of the population mean. A range or interval of values used to gauge the parameter. The value of the parameter under consideration may or may not be included in this estimation.
So we can say the difference between X₁ and X₁ is "X₁ is a random variable, and X₁ is a specific numerical value".
To learn more about random variable link is here
brainly.com/question/17238189
#SPJ4
What is 3÷7/4 because I need this or I will get a bad grade for math
Answer:
[tex]\frac{12}{7}[/tex]
Step-by-step explanation:
[tex]3 /\frac{7}{4} = \frac{12}{7}[/tex]
Here is a trick to divide fractions
Take the 2nd fraction in this case [tex]\frac{7}{4}[/tex] and flip it [tex]\frac{4}{7}[/tex]
Change the division sign to a multiplication sign and multiply
[tex]\frac{3}{1} * \frac{4}{7} = \frac{12}{7}[/tex]
The slope of the line segment A-D is the same as the slope of the line segment A-F. What are the two line segments that make this proportion equal?
What is an example of center of dilation?
As an example, if the centre of dilation were in the centre of a circle with radius 5 and was going through a scale factor 2 dilation, the radius would be 10.
The process of dilation involves growing an object's size without changing its shape. The size of the item may increase or decrease depending on the scale factor. Using dilation math, a square with side 5 units may be made wider to have side 15 units, but the shape of the square remains the same.
Enlargements that generate a bigger picture are called dilations. Reduction describes the dilatation that shrinks the picture. The starting figure is stretched or contracted during a dilatation. The scale factor (or ratio) and the centre of a dilatation are both described. Occasionally, the words "dilate" and words like "magnify," "disptend," "expand," "inflate," and "swell" are used interchangeably. All of these words suggest "expanding in size or volume," but the word "dilate" specifically refers to increased diameter.
Learn more about dilation at
https://brainly.com/question/13176891?referrer=searchResults
#SPJ4
Write a function rule to represent the situation. the total cost C for p pounds of lithium each pound costs $3.89 Write a function rule using C and p as variables. enter your response here (Type an equation.)
Answer: C = P$3.89
Step-by-step explanation:
Find the slope of the line. (Use/ for fraction, if needed)
(2,-3) (8,-2)
The slope of the line that contains points (2, -3) and (8, -2) is equal to 1/6.
How to calculate the slope of a line?In Mathematics, the slope of any straight line can be determined by using this mathematical equation;
Slope (m) = (Change in y-axis, Δy)/(Change in x-axis, Δx)
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Based on the information provided, we can logically deduce the following data points on the line:
Points on x-axis = (2, 8).Points on y-axis = (-3, -2).Substituting the given data points into the slope formula, we have the following;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (-2 - (-3))/(8 - 2)
Slope (m) = 1/6
Read more on slope here: brainly.com/question/3493733
#SPJ1
Can y’all help me with this?
I just need to know what to do when it’s negative cause I’ve been doing positive the whole time..
Answer:
1/5
Step-by-step explanation:
When raised to the negative power, the numerator is inversed,
2^(-1) = 1/2
10^-1 = 1/10
2^-2 = 1/2^2 or 1/4
4^(-1/2) = 1/(4^(1/2)) = 1/2
25^(-1/2) = 1/25^(1/2) = 1/5
Which customer has the smallest total bill, including tax and tip?
Customer #2 has the smallest total bill, including tax and tip.
How to know the customer with lowest bill?From the information, three business associates are at their favorite local café for lunch. They have finished their meals and just received their bills. Each bill is labeled at the top as Customer #1, Customer #2, or Customer #3.
For customer #1:
(1.06(12.95))(1.15) = 15.79;
The tip is 0.15(1.06(12.95)) = 2.06.
For customer #2:
1.06x = 11.65; x = 10.99; 20%
The tip = 0.2(10.99) = 2.20;
total = 11.65+2.20 = 13.85.
For customer #3:
1.06(11.50) + 0.18(11.50) = 14.26;
The tip is (0.18)(11.50) = 2.07.
Learn more about tax on
https://brainly.com/question/25783927
#SPJ1
Three business associates are at their favorite local café for lunch. They have finished their meals and just received their bills. Each bill is labeled at the top as Customer #1, Customer #2, or Customer #3. Note: Sales tax is 6%, and tips are rounded to the nearest $0.25. Customer #1: The bill, before sales tax has been added, is $12.95. This customer plans to leave a 15% tip, calculated after the tax has been added. Customer #2: The bill, after sales tax has been added, is $11.65. This customer plans to leave a 20% tip, calculated before the tax was added. Customer #3: The bill, before sales tax has been added, is $11.50. This customer plans to leave an 18% tip, calculated before the tax is added.
1. Which customer has the smallest total bill, including tax and tip?
What are the 3 types of 3D models describe each?
Solid Modeling: This type of model involves the creation of a 3D object with a fixed boundary, usually a closed surface. Surface Modeling: This type of model involves the creation of a 3D surface using curves, patches, and surfaces. Wireframe Modeling: This type of model involves creating a 3D object with a wireframe of interconnected lines and points.
1. Solid Modeling: This type of model involves the creation of a 3D object with a fixed boundary, usually a closed surface. It is often used in industrial design and architecture. The model consists of a series of interconnected faces and edges which are used to create a solid object. This type of modeling is useful for creating realistic models of objects with complex shapes.
2. Surface Modeling: This type of model involves the creation of a 3D surface using curves, patches, and surfaces. The model is composed of a series of connected surfaces which can be used to create a smooth surface. This type of modeling is often used in animation and video game development.
3. Wireframe Modeling: This type of model involves creating a 3D object with a wireframe of interconnected lines and points. It is often used in engineering and CAD systems to create a 3D representation of a design. The model consists of a series of connected lines, points, and curves which can be used to create a model of an object. This type of modeling is useful for creating simple models of objects with basic shape
Learn more about Modeling here
brainly.com/question/20214135
#SPJ4
When a company runs all 50 of its machines, it takes 72 hours to finish a job. If the company only runs 30 of its machines, it takes 120 hours to finish the same job. An equation for the inverse variation between the number of machines, x, the company runs and the time, y, in hours, it takes to finish the job is y=k/x . What is the value of K?
Answer: 3600
Step-by-step explanation: If y = k/x is the formula, solving for k gives xy = k, so 72(50) = 3600; or 30(120) = 3600.
May someone explain this to me in step-by-step? I'd greatly appreciate it!
Thank you.
Answer:
x = 9
Step-by-step explanation:
x = the missing side
24/8 = x/3
8(x) = 24(3)
8x = 72
x = 9
====================================================
Explanation:
The slanted left-most sides of the figures are 24 and 8, when moving from left to right.
Let's reverse the direction and move from right to left. The jump from 8 to 24 is "times 3", which is the scale factor when moving from the smaller figure to the larger figure.
The smaller figure has 3 up top. Apply the "times 3" scale factor to get 3*3 = 9 as the top side length of the larger figure.
In other words, every side of the smaller figure is tripled to get the larger figure.
----------------
Here's another way to solve.
24/8 = x/3
24*3 = 8*x .... cross multiplying
72 = 8x
8x = 72
x = 72/8
x = 9 is the final answer.
i need help with this
The trinomials in factor form are listed below:
Case A: (x + 2)²
Case B: (x - 3) · (x - 9)
Case C: (x - 7) · (x + 6)
Case D: (x - 9) · (x + 1)
How to factorize trinomials of the form x² + b · x + c
Herein we find four case of trinomials of the form x² + b · x + c that must be factorised, this can be done by using the following algebraic property:
x² - (r₁ + r₂) · x + r₁ · r₂ = (x - r₁) · (x - r₂)
Where r₁, r₂ are real roots of the quadratic equation.
Now we proceed to factorise each trinomial (quadratic equation), that is, their factor form:
Case A
x² + 4 · x + 4
x² + (2 + 2) · x + 2 · 2
(x + 2) · (x + 2)
(x + 2)²
Case B
x² - 12 · x + 27
x² - (3 + 9) · x + (- 3) · (- 9)
(x - 3) · (x - 9)
Case C
x² - x - 42
x² - (7 - 6) + (- 7) · 6
(x - 7) · (x + 6)
Case D
x² + 8 · x - 9
x² - (- 9 + 1) · x + (- 9) · 1
(x - 9) · (x + 1)
To learn more on quadratic equations: https://brainly.com/question/17177510
#SPJ1
For which value the given polynomial x³ 3x² 4x 12 is zero *?
When x = 4, the given polynomial is equal to zero.
The given polynomial is x³ 3x² 4x 12.
To find the value of x for which the polynomial is equal to zero, we need to solve the equation
x³ 3x² 4x 12 = 0
This can be done by factoring the polynomial, which gives us
(x – 4)(x² + 3x + 3) = 0
The value of x for which the polynomial is equal to zero is x = 4.
To prove this, we can substitute x = 4 in the original equation and verify.
x³ 3x² 4x 12 = 0
(4)³ 3(4)² 4(4) 12 = 0
64 + 48 + 16 + 12 = 0
130 = 0
This shows that when x = 4, the given polynomial is equal to zero.
Learn more about polynomial here:
https://brainly.com/question/11536910
#SPJ4
A farmer estimates that he has 9,000 bees producing honey on his farm. The farmer becomes concerned when he realizes the population of bees seems to be decreasing steadily at a rate of 5% per year. If the number of bees in the population after x years is represented by f(x), which statements about the situation are true? Check all that apply.
The correct options regarding given function are (b), (c) and (f).
What is a function?
An association between each element of a non-empty set A and at least one element of a different non-empty set B is called a function.
The set of values that we are permitted to enter into our function is known as the domain of a function.
A function's range is the collection of values it gives as outputs.
The options given are:
a)The function f(x) = 9,000([tex]1.05^{x}[/tex]) represents the situation.
b)The function f(x) = 9,000([tex]0.95^{x}[/tex]) represents the situation.
c)After 2 years, the farmer can estimate that there will be about 8,120 bees remaining.
d)After 4 years, the farmer can estimate that there will be about 1,800 bees remaining.
e)The domain values, in the context of the situation, are limited to whole numbers.
f)The range values, in the context of the situation, are limited to whole numbers.
Now given,
Number of bees initially = 9000
Rate of decay = 5%
f(x) = Number of bee population after x years
So, f(x) = 9000([tex]0.95^{x}[/tex])
After 2 years, number of bees is
f(2) = 9000(0.95²) = 8122.5 ≈ 8120
After 4 years, number of bees is
f(4) = 9000(0.95⁴) = 7330.56≈7330
The domain of the function is number of years(x) which can be whole as well as decimal numbers.
The range of the function is number of bees after x years, which should be a positive integer number. So whole numbers are the domain.
Therefore the correct options regarding given function are (b), (c) and (f).
To learn more about function,follow the link.
https://brainly.com/question/25638609
#SPJ1
PLS HELP FAST! Calculate the average rate of change on the interval
The average rate of change for the quadratic function in the graph is 1
What is average rate of change of quadratic function?The proportion of change along the y-axis to change along the x-axis represents the average rate of change between the two points.
Since the graph of a quadratic function is curved and lacks a constant rate of change between any two distinct locations, it is referred to as the average rate of change rather than the slope.
The average rate of change between points (2, 0) and (3, 1) is
= (0 - 1) / (2 - 3)
=-1 / -1
= 1
The average rate of change within the interval 1 to 3 is 1
Learn more about average rate of change at:
https://brainly.com/question/2170564
#SPJ1
Grouping symbols, Exponents, Multiply & Divide, Add & Subtract (GEMDAS). it is called by ____
Grouping symbols, Exponents, Multiply & Divide, Add & Subtract (GEMDAS). It is called by GEMS.
An effective acronym for teaching pupils the hierarchy of operations is PEMDAS.
The PEMDAS rule explains to pupils how to solve multi-step arithmetic problems and in what sequence to complete the operations to arrive at the right solution.
Groupings, Exponents, Multiplication or Division, Subtraction or Addition is referred to as GEMS. All grouping symbols, including parentheses, brackets, and braces, are referred to as groupings. The acronym GEMS has been adopted to take the role of PEMDAS. These can be used in place of one another.
To learn more about PEMDAS rule link is here
brainly.com/question/29172059
#SPJ4
What are the 5 types of inequality math?
The four ways to depict an inequality: solution graph, interval notation, set notation, and equation notation.
What is meant by inequality?In mathematics, an inequality displays the connection between two values in an unbalanced algebraic statement. One of the two variables on the two sides of the inequality may be greater than, greater than or equal to, less than, or less than or equal to another value, according to inequality signals.
There are four ways to depict an inequality: solution graph, interval notation, set notation, and equation notation.
A comparison of any two values, known as an inequality, demonstrates whether one value is less than, larger than, or equal to the value on the opposite side of the equation. A relationship in a real-world scenario can be demonstrated by writing an inequality.
To learn more about inequality refer to;
brainly.com/question/25275758
#SPJ4
Drives Co. sells portable hard drives. They can sell 905 drives when the price is $66/drive, and they can sell 800 drives when the price is $87/drive. If x represents the number of drives sold, determine the following. a. Drive Co.'s revenue function: R(X) = b. The price per drive when revenue is maximized: $ c. The maximum profit made from the sale of these drives if Drive Co. incurs production costs of $179 per drive and has fixed costs of $250: $
a. Drive Co.'s revenue function R(X) = (-x^2/5)-247x.
b. The price per drive when revenue is maximized is $370.6.
c. The maximum profit made from the sale of these drives if Drive Co. incurs production costs of $179 per drive and has fixed costs of $250 is $6030.
What is a function?
The characteristic that every input is associated to exactly one output defines a function as a relationship between a set of inputs and a set of allowable outputs.
Drive Co. sells portable 905 hard drives when the price is $66/drive and can sell 800 hard drives when the price is $87/drive.
Let p be the price of hard drive and x be the number of hard drives.
When x = 905, then p = 66.
So, (x1,p1) = (905,66)
Similarly, when x = 800, then p = 87.
So, (x2,p2) = (800,87)
So, the equation of line between x and p is given as -
p-p1=[(p2-p1)/(x2-x1)}(x-x1)
Plugging in the values -
p-66=[(87-66)/(800-905)](x-905)
p-66=(21/-105)(x-905)
-105p+6930=21x-19005
-105p-21x=-19005-6930
-105p-21x=-25935
p=(-21x/105)-247
p=(-x/5)-247
So, the price function p(x) = (-x/5)-247.
Now, derive the revenue function -
Revenue = Number of drives × price per drive
Revenue = x · p(x)
Revenue = x · (-x/5)-247
Revenue = (-x^2/5)-247x
Therefore, the revenue function R(x) = (-x^2/5)-247x.
For maximum revenue -
dR/dx = R'(x) = 0 and R''(x)<0
dR/dx = -2x/5-247 = 0
-2x/5 = 247
x = -1235/2
x = -617.5
Therefore, the number of drives at maximum revenue is 618 drives.
The price per drive is -
p(618) = {-618/5}-247
p(618) = -370.6
Therefore, the price per drive is $370.6.
Now, the profit S(x) = Revenue R(x) - Total Cost C(x)
C(x) = fixed cost + variable cost
Variable cost = number of drives × price per drive
C(x) = 250 + 179x
Substituting the values -
S(x) = [(-x^2/5)-247x] - [250+179x]
S(x) = (-x^2/5)-68x-250
In order to get maximum profit differentiate the equation and equate it to 0.
dS/dx = 0
dS/dx = -2x/5-68 = 0
-2x/5 = 68
x = 340/-2
x = -170
d^2S/dx^2 = -2/5<0
So, maximum profit will be at x = 170.
S max = S(170) = [(170)^2 /5] - 68 (170) - 250
= 5780 - 11560 - 250
= -6030
Therefore, the maximum profit earned is $6030.
To learn more about function from the given link
https://brainly.com/question/17043948
#SPJ1
50 POINTS!
Argument A
A chemistry professor claims that preparing a description of reduction-oxidation chemical reactions requires balancing the component half-reactions for oxidation and reduction by adding molecules or electrons into the chemical equation. Based on the professor's expertise in chemistry, we should conclude that reduction-oxidation chemical equations should be balanced in this way.
Argument A is (strong/weak)
Argument A is strong based on the logic.
What is logic?We know that logic is the process whereby we can be able to decode if an argument is true or false when we look at the premises and the conclusion. It is normal that the premise of the argument should be able to give rise to the conclusion.
In this case, we must note that the professor is an authority figure in chemistry and what he says must be taken as trust worthy as shown in the deductive argument that led to this conclusion as shown above.
Learn more about logic:https://brainly.com/question/2141979
#SPJ1
Greta has two pet lizards, Draco and Lizzy. For every 11 crickets Greta feeds Draco, she always feeds Lizzy 8 crickets. Last week, Greta fed Draco 77 crickets.
How many crickets did Greta feed Lizzy?
The answer is 56 crickets.
What is a ratio?The quantitative relation between two amounts shows the number of times one value contains or is contained within the other. for example-"the ratio of computers to students is now 2 to 1"
Given here: Greta has two pet lizards, Draco and Lizzy. For every 11 crickets Greta feeds Draco, she always feeds Lizzy 8 crickets. Thus the ratio is 11:8 Therefore if Draco got 77 crickets ten lizzy should get 8×7=56 crickets.
Hence, The answer is 56 crickets.
Learn more about ratios here:
https://brainly.com/question/13419413
#SPJ1
What is the slope of the relationship?
Select the correct answer from each drop-down menu. 4 rows with circles and triangles, left to right. Row 1, circle, triangle, 2 circles, triangle. Row 2, triangle, circle, 2 triangles, circle, triangle. Row 3, circle, 2 triangles, circle, triangle. Row 4, triangle, 2 circles, 2 triangles. The ratio of the number of circles to the number of triangles in simplest form is . The number of circles that need to be added to make the ratio 1 : 1 is .
The ratio of the number of circles to the number of triangles in simplest form is 3:4. The number of circles that need to be added to make the ratio 1 : 1 is 3.
How to determine the ratio in simplest form?First of all, we would have to determine the total number of circles and the number of triangles based on the information provided in the chart (see attachment) as follows;
Total number of circles, C = 9 circles.
Total number of triangles, T = 12 triangles.
Therefore, the ratio of the number of circles to the number of triangles is given by
C:T = 9:12
Dividing both sides of the ratio by 3, we have the following ratio in simplest form:
C:T = 3:4
In order to make the ratio 1:1, the number of circles that need to be added can be calculated as follows;
9 + x:12=1:1
(9 + x)/12 = 1/1
9 + x = 12
x = 12 - 9
x = 3 circles.
Read more on ratio here: brainly.com/question/820673
#SPJ1
Which function is the result of translating y = x2 downward by 3 units and to the left by 4 units?.
The outcome of translating y = x^2 downward by 3 units and to the left by 4 units is y = (x+4)^2-3.
What exactly is Graph?A graph is a mathematical depiction of a network that describes the connection between lines and points.
We must determine which function results from translating y = x^2 downward by 3 units and to the left by 4 units.
A translation is a movement of the graph that is either horizontally or vertically parallel to the axis.
Replace x with x+4 y = (x+4)^2-3 to shift the graph four units to the left.
As a result, y = (x+4)^2-3 is the result of translating y = x^2 by 3 units downward and 4 units to the left.
To learn more on Graph click:
https://brainly.com/question/17076087
#SPJ4
What is the slope of y =- 3x 10?
Answer:
The Slope would be 3
Functions!!!
Pls help my teacher didn’t do her job and teach
Answer:
1=yes
2=no
3=no
4=no
5=yes
6=yes(im not sure on this last one)
Step-by-step explanation:
If no vertical line can intersect the curve more than once, the graph does represent a function.
Answer:
Graph 1= It's a function
Graph 2= No
Graph 3= No
Graph 4= No
Graph 5= Yes
Graph 6= Yes
Step-by-step explanation:
1. Which of the following would be in the solution set to the system of inequalities given below?
y>4x+7
8x-2y> 10
a No solution
b (-4,1)
c Both (-4,1) and (6,2) are solutions
d (6,2)
Option A will be the solution set of given linear inequalities.
What exactly are linear inequalities?
In mathematics, inequality denotes a mathematical expression in which neither side is equal. In Math, an inequality occurs when a connection produces a non-equal comparison between two expressions or two integers. The equal sign "=" in the phrase is substituted by any of the inequality symbols, such as greater than symbol (>), less than symbol (<), greater than or equal to symbol (≥), less than or equal to symbol (≤), or not equal to symbol ((≠). In mathematics, there are three types of inequalities: polynomial inequalities, rational inequalities, and absolute value inequalities.
Hence,
For given inequalities
y>4x+7
8x-2y>10
there will be no solution as the graph of these inequalities does not coincide anywhere.
To know more about linear inequalities visit the link
https://brainly.com/question/11897796?referrer=searchResults
#SPJ1
(-4,0) is the solution of the set to the system of inequalities
What is Inequality?
A relationship between two expressions or values that are not equal to each other is called 'inequality.
The given two inequalities are
y<-3x-6 and 4x-2y<-8
Let us check for (-4, 0)
0<-3(-4)-6
0<6
4x-2y<-8
4(-4)-2(0)<-8
-16<-8
So (-4, 0) is the solution of the inequalities.
Now let us check for (0, 2)
replace y value as 2 and x as 0.
2<-3(0)-6
2<-6
Which is not true.
Hence, (-4,0) is the solution of the set to the system of inequalities.
To learn more on Inequality click:
brainly.com/question/28823603
#SPJ1
The shortest route from London to Bristol is 120 miles.
A lorry is expected to take 2 hours to travel this route.
The lorry actually travels by a different route which increases the distance by 20%, but it still arrives in 2 hours.
By how many more mph than the expected speed does the lorry travel?
Answer:
12 mph
Step-by-step explanation:
First we're going to start by finding the difference in miles from the first route to the second route.
The first route is 120 miles and the second is 20% more than the first. To find the difference you should first multiply the 120 by 20%.
120*0.2=24
You then need to add the additional 24 miles to the original 120 to find the distance of the second route.
120+24=144
After we will begin to find the mph expected speed for both routes.
The first route was 120 miles and it was expected to take 2 hours to get there. This means you need to divide 120 by 2 to find out how many miles they were traveling within one hour.
120/2=60
So the expected mph for the first route would be 60.
We want to repeat the same thing for the second route.
144/2=72
The mph for the second route was 72.
Now you need to find out how much faster the mph was for the second route than the first by subtracting the first from the second.
72-60=12
The second route was 12 mph faster than the first.