Answers
The system of equations is:
[tex]\begin{gathered} 6x+3y=12 \\ 8x+4y=24 \end{gathered}[/tex]To solve the system of equations by graphing, we need to make a graph of each equation. For that, we solve for y in both equations:
[tex]\begin{gathered} \text{Solving the first equation for y:} \\ 6x+3y=12 \\ 3x=-6x+12 \\ y=-2x+4 \\ \text{Solving the second equation for y:} \\ 8x+4y=24 \\ 4y=-8x+24 \\ y=-2x+6 \end{gathered}[/tex]We have two equations to graph:
[tex]\begin{gathered} y=-2x+4 \\ y=-2x+6 \end{gathered}[/tex]Comparing with the slope-intercept equation:
[tex]y=mx+b[/tex]Where m is the slope and b is the y-intercept.
We can see that the slope of the two equations is m=-2, this means that the lines will have the same rate of change of -2 in y for every 1 in x. And one graph will cross the y-axis at 4 and the other at +6.
The graph of the two equations is shown in the following image:
Where the green line is the first equation, and the red line is the second equation.
There is no solution to this system of equations because the lines do not intersect each other.
Related Questions
Linear ApplicationThe function V(x) = 20.6 +2.2x gives the value (in thousands of dollars) of an investmentafter a months.Interpret the Slope in this situation.The value of this investment is decreasing✓at a rate ofdollars per year V
Answers
SOLUTION:
Case: Interpreting slopes from linear equations
Method:
V(x) = 20.6 + 2.2x
Compared to
y = mx + b
Where m is the slope and it is being interpreted as the rise for every single run on the line graph.
As it applies,
V(x) = 20.6 + 2.2x
m = 2.2 thousand ie. 2200
It is interpreted as the amount the value increases by each month.
Final answer:
The value of this investment is increasing at a rate of $2200 each month
Let g(x) be the transformation of f(x) = IxI so that the vertex is at (-1, -3). Identify the rule for g(x) and its graph.
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EXPLANATION
Since the vertex is at (-1, -3), the only appropriate option is to translate the function one unit to the left, and again translating 3 units down, with the following form:
g(x) = |x+1| - 3
Therefore, the solution is the last option.
Determine the last possible degree of the polynomial function shown
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We are asked to determine the degree of the polynomial given its graph. To do that we can count the number of bumps in the graph. We notice that it has 4 bumps:
This type of behavior is usual of polynomials of degree 5.
Find the exact solution to the equation 42 equals 3 x squared, leaving your answer in square root form. Show your work.
State if your solution is rational or irrational. Explain.
Find the closest integer approximation to your solution and explain how you found it.
Answers
The solution is x = √ 14, it is irrational
The closest integer approximation to the solution is 4
How to determine the valueFrom the information given, we have that;
42 equals 3 x squared
This is represented as;
3x² = 42
Let's take the following steps to determine the value of x
Divide both sides by the coefficient of x²
x² = 42/3
x² = 14
Take the square root of both sides, we have;
x = √ 14
The solution is an irrational number
What is an irrational number?An irrational number is described as a number that cannot be expressed in a fractional form.
They are real numbers that expressed as quotients
Examples of irrational numbers are;
√5, √7, √11, √13
Now, let's find the square root, we have
= 3. 74
Take '7' as 1 and add to the whole number 3, we get;
= 4 ; to the closest integer
Hence, the value is 4
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suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of inches and a standard deviation of inches. what proportion of woodlice have antenna lengths that are more than inches? round your answer to at least four decimal places.
Answers
Proportion = 0.2119
P (X is less than or equal to 0.18) = P [(X-μ)/ sigma is less than or equal to (0.18-0.22)/ 0.05] = P(Z is less than or equal to -0.80). Using z-table proportion = 0.2119
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-7u^2+12u+4 factor the following expression
Answers
-( ( 7 - u )( u - 2 ) ) is the factorized form of the polynomial -7u² + 12u + 4, using the AC method.
How to factor a polynomial?Given the polynomial in the question;
-7u² + 12u + 4
Factor out -1 out of the polynomial
-1( 7u² - 12u - 4 )
Compare to the form ax² + bx + c
a = 7b = -12 c = -4To factor, compare to the form ax² + bx + c and rewrite the middle term as a sum of two terms whose product is;
a × c = 7 × -4 = -28
and whose sum is;
b = -12
Now, factor -12 out of -12x
-1( 7u² - 12(u) - 4 )
We know that -13 is the same as 2 plus -14
-1( 7u² - ( 2 - 14 )u - 4 )
Apply distributive property
-1( 7u² - 2u - 14u - 4 )
Group the terms
-1( u(7u - 2) - 2(7u - 2 ) )
-1( (7-u)(u-2) )
-( (7-u)(u-2) )
Therefore, the factorized form of the polynomial is -( ( 7 - u )( u - 2 ) ).
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-(7u+2)(u-2) is the factorized form of expression -7u²+12u+4.
What is Expression?An expression is combination of variables, numbers and operators.
The given expression is -7u²+12u+4.
We need to find the factors of this expression.
-7u²+12u+4.
This can be written as
-7u^2+14u-2u+4.
Take 7u from first two terms and 2 from last two terms in the expression.
-7u(u-2)-2(u-2)
(-7u-2)(u-2)
-(7u+2)(u-2)
Hence -(7u+2)(u-2) is the factorized form of -7u^2+12u+4.
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The Smiths have decided to put a paved walkway of uniform width around their swimming pool. The pool is a rectangular pool that measures 12 feet by 20 feet. The area of the walkway will be 60 square feet. Find the width of the walkway.
***NOTE*** This is a Quadratic Word Problem, so please the Quadratic Method!! Extra 20 BRAINLIST will be reward if work is shown step by step CORRECTLY!!
Answers
Answer:
Step-by-step explanation:
12 times 2 =24 60 into 10 so i think it will be 6
Either Table A or Table B shows a proportional relationship.
Plot the points from the table that shows a proportional relationship.
Answers
Table A shows a proportional relationship
What is proportional relationship?
When the value of independent variable changes the value of dependent variable changes. that means if the value independent variables is increase the value of dependent variable will also be increased.
In the figure we are given 2 tables
We plot both the curve on the graph we get
Table A shows a linear relationship where are Table b Does not shows a proportional relationship
Hence Table A shows a proportional relationship
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Answer:
Step-by-step explanation:
Point (2,11.9),(4,10.5)
(2,8) , (4,7.5)
(2,6) , (4,1.5)
(2,0.5) , (4.-1)
(2,-1) , (4,-1)
(-2.8,-5.0) , (-3.6,-5.9)
rise over run so what's the answer
Answers
The slopes formed by each of the pairs of points are given as follows:
(2,11.9),(4,10.5): -0.7.(2,8) , (4,7.5): -0.25.(2,6) , (4,1.5): -2.25.(2,0.5) , (4.-1): -0.75.(2,-1) , (4,-1): 0.(-2.8,-5.0) , (-3.6,-5.9): 0.89.SlopeThe slope is equivalent to the rate of change, hence, given two points, the slope is calculated as the change in y, also called rise, of these two points divided by the change in x, also called run.
For the first case, the points are:
(2, 11.9) and (4, 10.5)
Hence:
The change in x is of 4 - 2 = 2.The change in y is of 10.5 - 11.9 = -1.4.The slope is:
m = -1.4/2 = -0.7.
The other slopes are calculated as follows:
(2,8) , (4,7.5): m = (7.5 - 8)/(4 - 2) = -0.25.(2,6) , (4,1.5): m = (1.5 - 6)/(4 - 2) = -2.25.(2,0.5) , (4.-1): m = (-1 - 0.5)/(4 - 2) = -0.75.(2,-1) , (4,-1): m = (-1 - (-1))/(4 - 2) = 0. (no change in the output).(-2.8,-5.0) , (-3.6,-5.9): m = (-3.6 - (-2.8))/(-5.9 - (-5)) = 0.89.More can be learned about slopes at https://brainly.com/question/28954211
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If p and q are integers and pq +p is an odd number, which of the following numbers must be even?
1-p
2-q
3- pq-3
4- p^2
Answers
Answer:Answer: number 2 is correct
1. What is the value of 18 + (-7) – (-5)
Answers
Answer:
16
Step-by-step explanation:
Two negatives make a positive:
18-7+5
Solve the problem left to right:
18-7=11
11+5=16
PLEASE HELP ME FIND X
Answers
Answer:
28°
Step-by-step explanation:
AB and CD are straight lines, all angles in a straight line add up to 180
PLEASE HELP ME!!!!!!!
Answers
Answer: 31
Step-by-step explanation:
The numbers are increasing by 1, then 2, then 3, ...
In other words, the second difference is 1.
So, the next number is likely [tex]24+7=31[/tex].
Lines a and b are parallel. Line c is perpendicular to line a. Must it also be perpendicular to line b? Explain your thinking.
Answers
Line c is also perpendicular to line a.
Suppose that c and b are perpendicular. This implies that:
option 1) b and a are the same line or,
option 2) b is parallel to a
Since we know that a and b are different lines, hence, the option 2 is the correct.
Assume the TV warranty or replacement times for TV sets are normally distributed with a mean of 9.2 years and a standard deviation of 1.1 years. Find the probability that a randomly selected TV will have a replacement time of less than 6 years.
Answers
Firstly, let's draw a picture of the distribution:
Graphically, we want to calculate the blue area. To put it differently, we want to calculate
[tex]P(X<6).[/tex]To do this, we need to find the z-score associated with 6. We can calculate it by
[tex]\begin{gathered} z=\frac{6-\mu}{\sigma}\Rightarrow\begin{cases}\mu=\operatorname{mean} \\ \sigma=\text{standard deviation}\end{cases}, \\ \\ z=\frac{6-\mu}{\sigma}=\frac{6-9.2}{1.1}\approx-2.91. \end{gathered}[/tex]Now, we must check our favorite z-score table and look for the probability associated with the z-score we just found. It's 0.0018.
AnswerThe probability that a randomly selected TV will have a warranty of less than 6 years is 0.0018.
Question 3 (5 points) Convert the decimal 0.929292... to a fraction.
Answers
Answer:
92 over 100
Step-by-step explanation:
Your family used 27.5 gallons of gas to drive 654.5 miles. how many miles did you drive for each gallon?
Answers
Answer:
total distance = 654.5
Total gas used = 27.5
Distance per gallon = 654.5 ÷ 27.5 = 23.8
We drove 23.8 miles for each gallon of gas
Nicole made $91 for 7 hours of work. At the same rate, how much would she make for 11 hours of work?
Answers
7
1
-5
35
-4 24
-3 15
-2 8
-1 3
0 0
1 -1
Match the average rates of change of f(x) to the corresponding intervals.
-7
-4
300
[-5, -1]
(-4,-1]
[-3, 1]
-2,1]
Answers
The rates of changes of the given function for the corresponding intervals are: [-5, -1] = -8, [-4, -1] = -7, [-3, -1] = -6, [-2, -1] = -5.
What is function?
A function, according to a technical definition, is a relationship between a set of inputs and a set of potential outputs, where each input is connected to precisely one output.
This means that a function f will map an object x to exactly one object f(x) in the set of potential outputs if the object x is in the set of inputs (referred to as the domain) (called the codomain).
The rate of change of a function can be calculate using the formula:
[tex]R = \frac{f(x_2)-f(x_1)}{x_2-x_1}[/tex]
Putting the value from the question:
given [x₁, x₂] = [-5, -1]
f(-5) = 35 , f(-1) = 3
Putting these value in formula:
[tex]R = \frac{3-35}{-1 -(-5)}[/tex]
R = -32/4
R = -8
given [x₁, x₂] = [-4, -1]
f(-4) = 24, f(-1) = 3
Putting these value in formula:
[tex]R = \frac{3-24}{-1 -(-4)}[/tex]
R = -21/3
R = -7
given [x₁, x₂] = [-3, -1]
f(-3) = 15, f(-1) = 3
Putting these value in formula:
[tex]R = \frac{3-15}{-1 -(-3)}[/tex]
R = -12/2
R = -6
given [x₁, x₂] = [-2, -1]
f(-2) = 8, f(-1) = 3
Putting these value in formula:
[tex]R = \frac{3-8}{-1 -(-2)}[/tex]
R = -5/1
R = -5
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Patty, Quinlan, and Rashad want to be club officers. The teacher who directs the club will place their names in a hat and choose two without looking. The student whose name is chosen first will be president and the student whose name is chosen second will be vice president.
Which choice represents the sample space, S, for this event?
S = {PQR}
S = {PQR, PRQ, QPR, QRP, RPQ, RQP}
S = {PQ, PR, QR}
S = {PQ, QP, PR, RP, QR, RQ}
Answers
The resulting sample space of the given situation is S = {PQ, QP, PR, RP, QR, RQ}
Sample space:
Sample space refers the collection or a set of possible outcomes of a random experiment. The sample space is represented using the symbol, “S”.
Given,
Patty, Quinlan, and Rashad want to be club officers. The teacher who directs the club will place their names in a hat and choose two without looking. The student whose name is chosen first will be president and the student whose name is chosen second will be vice president.
Here we need to find the sample space for the event.
Let us consider,
P represents Patty
Q represents Quinlan
R represents Rashad
And through the question we have know that, the teacher drawn two card at a time,
So we have consider that the teacher is going to draw out of the hat one first, without replacement, and then draw another one.
The first chosen one will be the president, and that could be P, Q or R, Now, the chosen second one is the Vice president, and already one has already being drawn, that could only be two fellows.
Therefore, the total of likely outcomes is PQ,QP, PR, RP, QR, RQ, one paired up with either of the two remaining in the hat.
So, the resulting sample space is
S = {PQ, QP, PR, RP, QR, RQ}
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What is the value of x, y, and z??
Answers
The values x = 0, y = 0.03 and z = 0.039 for the three events A,B and C with their associated probabilities.
Axioms of probabilityThe following are axioms of probability for the purpose of answering the given question:
Two events are said to be mutually exclusive if the probability of their intersection is zero.
Two events are said to be independent if the probability of their intersection is equal to the product of their respective probability
From the question, the probability of the event A alone occurring=0.10
the probability of the event B alone occurring=0.30
the probability of the event C alone occurring=0.39
Given that B and C are mutually exclusive events;
x = probability of the intersection of B and C=0
A and C are said to be independent so; z = probability of the intersection of A and C = 0.10×0.39
probability of the intersection of A and C = 0.039
If A and B are not mutually exclusive events and are independent then;
y = probability of the intersection of A and B
probability of the intersection of A and B = 0.10×0.30
probability of the intersection of A and B = 0.03.
Hence, the values of x,y and z are 0, 0.03 and 0.039 respectively for the events A,B and C with their associated probabilities.
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A cylindrical oil tank 8 ft deep holds 580 gallons when filled to capacity. How many gallons remain in the tank when the depth of oil is 3 1/2 ft.
Answers
Solution
[tex]\begin{gathered} 8ft=580\text{ gallons} \\ 3\frac{1}{2}ft=x \end{gathered}[/tex]Solution
[tex]\begin{gathered} \frac{8}{3.5}=\frac{580}{x} \\ cross\text{ multiply} \\ 8x=3.5\times580 \\ 8x=2030 \\ divide\text{ both sides by 8} \\ \frac{8x}{8}=\frac{2030}{8} \\ x=253.75 \end{gathered}[/tex]The final answer
253.75 gallons remain in the tank when the depth of oil is 3.5 ft
What is 3g^2 + 2g^2 - 4g simplified?
Answers
consider
[tex]3g^2+2g^2-4g[/tex]note that the letter g is common to all the numbers in the equation, so we take the lowest power of g and make a common factor, that is:
[tex]3g^2+2g^2-4g=g(3g+2g-4)^{}\text{ = g(5g - 4)}[/tex]so the correct answer is
g(5g - 4)
Answer: 9g
Step-by-step explanation:
3g^2 + 2g^2 - 4g
you simplify the exponents first, because of P.E.M.D.A.S.:
9g + 4g - 4g combine like terms
Answer: 9g
Find an equation for the line that passes through the points (3, -4) and (-3, -1).
Answers
Answer:
That is my own idea and I hope it is very helpful
What is the measure of C?
Please show your work if you want to be brainiest!
Answers
The measure of ∠C in the given triangle is 58°.
According to the question,
We have the following information:
ACD is a triangle where we have BD as an altitude on the side AC.
Now, we know that the altitude on any side makes an angle of 90° or in other words, it can be said that it makes a right angle.
Now, we have two right-angled triangle: ABD and CBD.
We have ∠ADB = 32°.
Now, ∠CDB will also be equal to 32° because the altitude bisects the angle (in two equal parts).
We know that the sum of the three angles in a triangle is 180°.
In ΔCBD, we have:
∠B + ∠C + ∠CDB = 180°
90° + ∠C + 32° = 180°
∠C + 122° = 180°
∠C = (180-122)°
(Moving 122 from the left hand side to right hand side will result in the change of sign.)
∠C = 58°
Hence, the measurement of ∠C in the given triangle is 58°.
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3/4 of a number is 30. What is the number? )) What is the number?
Answers
To find the number we can create the following equation and solve for x:
[tex]\frac{3}{4}\cdot x=30[/tex]Let x be the missing number, use inverse operations to solve the equation:
[tex]\begin{gathered} x=30\cdot\frac{4}{3} \\ x=\frac{120}{3} \\ x=40 \end{gathered}[/tex]The number is 40.
The angles of a triangle are in the ratio 2:8:5 find the size of each side
Answers
Answer:
24° , 60° , 96°
Step-by-step explanation:
sum the parts of the ratio, 2 + 8 + 5 = 15 parts
divide the sum of the angles in a triangle by 15 to find the value of one part of the ratio.
180° ÷ 15 = 12° , then
2 parts = 2 × 12° = 24°
5 parts = 5 × 12° = 60°
8 parts = 8 × 12° = 96°
the 3 angles in the triangle are 24° , 60° , 96°
17) g(x)= x³ + 4x²
f(x) = 3x + 1
Find g(x) + f(x)
Answers
Answer:
x³ + 4x² + 3x + 1
Step-by-step explanation:
fg(x) + f(x)
= x³ + 4x² + 3x + 1
The following shape consists of a rectangle and a triangle. Determine its area.
Answers
Answer:
72 cm²
Step-by-step explanation:
You want the area of a shape consisting of a rectangle and a triangle. The rectangle is 7 cm long and 8 cm high. The triangle has a base of 8 cm and a height of 4 cm.
AreaThe area of the rectangle is ...
A = bh
A = (8 cm)(7 cm) = 56 cm²
The area of the triangle is ...
A = 1/2bh
A = 1/2(8 cm)(4 cm) = 16 cm²
Total areaThe total area is the sum of the areas of the parts:
total area = rectangle area + triangle area
= (56 cm²) +(16 cm²) = 72 cm²
The area of the shape is 72 cm².
__
Additional comment
You can see from the area formula that the area of a triangle is half the area of its enclosing rectangle. That is, the 4 cm high triangle on the right side of the figure effectively adds the area of a 2 cm wide rectangle with the same base.
The figure's area is equivalent to that of a rectangle 7+(4/2) = 9 cm wide and 8 cm high: (9 cm)(8 cm) = 72 cm², as above.
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Hi, can you help me to solve this problem please!!!
Answers
The Solution:
Given the graph of f(x), we are required to determine whether the degree of the function is ODD or EVEN, and also to determine whether the function itself is ODD.
An odd function is defined as a function that has f(–x) = –f(x) for any value of x. The opposite input gives the opposite output.
From the given graph of f(x), the function f(x) is ODD.
The degree of the function f(x) is odd since the f(x) itself is odd.
