Answer:
A. The first mistake was made is Step 1
Step-by-step explanation:
The first mistake was in Step 1. Take a look below to see how Step 1 should've been.
4(2x +5)-(3x-4)=15
Use distributive property.
4(2x +5)-(3x-4)=15
8x+20-3x+4=15
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I need ur help please explain i don't understand check attachment
The graph of the given piecewise function is given at the end of the answer.
What is a piecewise function?A piecewise function is a function that has different definitions, depending on the input.
For this problem, the function is defined as follows:
f(x) = 2/3x, for x ≤ 0.f(x) = 3, for 1 ≤ x ≤ 3.f(x) = -2x + 5, for x ≥ 4.Hence:
To the left of x = 0, the function is increasing and linear.Between x = 1 and x = 3, the function is constant at x = 3.To the right of x = 4, the function is decreasing and linear.The function is given at the graph with the end of answer, with holes where the function is not defined, and multiple behaviors as it is piecewise.
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11. Lang withdrew half of his money from his
bank account on the last day of January.
Then he withdrew half of the remaining
amount on the last day of February. He
continued withdrawing half of his money
on the last day of March, April, May, and
June. His final balance was $1.50. How
much money did Lang have in his bank
account before his first withdrawal?
Land withdrew money in the form of an geometric series and he had $96 in his account in January.
A geometric series in mathematics is made up of an unlimited number of terms with a fixed ratio between them.
Each term is connected to the previous term by a simple ratio.
if the first term of an Geometric series be a, and the common ratio r then the second term is ar, third term is ar² and so on.
the nth term of a Geometric series is calculated by
[tex]a_n=ar^{n-1}[/tex]
Now here we know that the final term of the Geometric series is $1.50.
So each month Lang withdrew half of his money.
So the common ratio of each terms is [tex]\frac{1}{2}[/tex].
Number of months=6(n=7)
Now we have to find the initial term of the Geometric series.
We know that [tex]a_n=ar^{n-1}\\[/tex]
Given n=7 and r=1/2 and aₙ=1.5
Substituting the values we get:
[tex]1.5=a\times(\frac{1}{2})^{7-1} \\or, 1.5=a \times (\frac{1}{2} )^6\\or, 1.5=a\times \frac{1}{64} \\or,a=96[/tex]
Hence Lang had $96 in his bank account before his first withdrawal.
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Given that ZCEA is a right angle and EB bisects ZCEA,
which statement must be true?
OZBEA CEA
O ZCEB CEA
OmzCEB= 45°
O m/CEA = 45°
The statement is true and option (C) is correct. i.e m∠CEB = 45° .
To prove
Reason
As shown in the diagram
∠CEA = ∠CEB + ∠AEB
Bisector
A bisector is a tool that divides any object into two equal parts.
As given
∠CEA is a right angle, and EB bisects it, dividing it into two equal parts.
Thus
∠CEB = ∠AEB = 45 °
Therefore
m ∠CEB = 45 °
Hence proved.
Therefore the correct option is option (C) is correct.
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Jayden is a songwriter who collects royalties on his songs whenever they are played in
a commercial or a movie. Jayden will earn $30 every time one of his songs is played
in a commercial and he will earn $120 every time one of his songs is played in a
movie. Jayden's songs were played on 4 more commercials than movies, and his total
earnings on the royalties from all commercials and movies was $420. Write a system
of equations that could be used to determine the number of commercials and the
number of movies on which Jayden's songs were played. Define the variables that use to write the system.
The system of equations that could be used to determine the number of commercials and the number of movies on which Jayden's songs were played is illustrated as 30(x + 4) + 120(x) = 420.
The variable is that the number of times the song was played in movies is represented by x.
How to illustrate the information?From the information, Jayden is a songwriter who collects royalties on his songs whenever they are played in
a commercial or a movie and she will earn $30 every time one of his songs is played in a commercial and he will earn $120 every time one of his songs is played in a movie
Let the number of times the song was played in movies be x.
Jayden's songs were played on 4 more commercials than movies. This will be x+4.
Therefore, the equation to solve the question will be:
30(x + 4) + 120(x) = 420
30x + 120 + 120x = 430
150x + 120 = 430
150x = 430 - 120
150x = 310
x = 310/150
x = 2.1
Number of movies = 2
Number of commercial = x + 4 = 6
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Answer:
Step-by-step explanation:
Help me please please
The average person laughs 15 times a day. Is this continuous or discrete?
Answer: Discrete
Step-by-step explanation: Discrete data is a numerical type of data that includes whole, concrete numbers with specific and fixed data values determined by counting.
Hope this helps!
help plss ima need help on other questions to
Answer:
5 1/15
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine.
Exact Form:
76
15
Decimal Form:
5.0
¯
6
Mixed Number Form:
5 1/15
THIS IS EASY ++ WILL GIVE BRAINLIEST ! TYSM
Answer:
5
-5
13
-5
-13
13
5
-13
Step-by-step explanation:
Answer:
5, -5, 13, -5, -13, 13, 5, -13
Step-by-step explanation:
9 - 4 = 5 4 - 9 = -5 9 - (-4) = 9 + 4 = 13 -9 - (-4) = -9 + 4 = -5 -9 - 4 = -13 4 - (-9) = 4 + 9 = 13 -4 - (-9) = -4 + 9 = 5 -4 - 9 = -13Hope this helped and have a good day
Find the solution(s) of the system of equations:
y = x2 + 6x + 9
y = 2x + 6
(–3,12) and (–1,8)
(3,12) and (1,8)
(3,0) and (1,4)
(–3,0) and (–1,4)
The solutions are (0, - 6) ,(7, 8)
The given system of equations is expressed as
y = x² - 5x - 6- - - - - - - - - - - - (1)
y = 2x - 6- - - - - - - - - - - (2)
We would apply the method of substitution by substituting equation 2 into equation 1. It becomes
x² - 5x - 6 = 2x - 6
x² - 5x - 6 = 2x - 6
x² - 5x - 2x - 6 + 6 = 0
x² - 7x = 0
x(x - 7) = 0
x = 0 or x - 7 = 0
x = 7 or x = 0
Substituting x = 0 into equation 2, it becomes
y = 2 × 0 - 6
y = - 6
Substituting x = 7 into equation 2, it becomes
y = 2 × 7 - 6
y = 14 - 6
y = 8
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Help me solve for 28/x = 12/18
Answer:
hope u get it............
15.84 + 156 =??
Pls help
Answer:
171.84
Step-by-step explanation:
156 + 15 = 171
171 + 0.84 = 171.84
Write an explicit and a recursive formula for each sequence. 0,6,12,18,24, . . . . . .
an=a1+d(n−1) is the explicit and a recursive formula for each sequence .
What is sequence?An ordered group of numbers with a shared difference between each succeeding word is known as an arithmetic sequence. For instance, the common difference in the arithmetic series 3, 9, 15, 21, and 27 is 6.
Arithmetic sequences are sequences containing these patterns. The distance between succeeding terms in an arithmetic series is always the same. The difference between consecutive words is always two, hence the sequence 3, 5, 7, 9... is arithmetic.
An explicit formula that states a = d (n - 1) + c, where d is the common difference between succeeding words, and c = a1, can be used to establish an arithmetic sequence.
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List the domain and range of each relation. (3,-2),(4,4),(0,-2),(4,1),(3,2)
Range = { -2 , 4 , -2 , 1 , 2} is for the relation .
what is domain and range?
The range of values that we are permitted to enter into our function is known as the domain of a function. The x values for a function like f make up this set (x). A function's range is the collection of values it can take as input. After we enter an x value, the function outputs this sequence of values.How are domain and range determined?
In order to identify the values of the independent variable x and acquire the domain, we simply solve the equation y = f(x). Simply put, x=g(y) will calculate the function's range after we identify g's domain (y).relation. (3,-2),(4,4),(0,-2),(4,1),(3,2)
domain = { 3 , 4 , 0 , 4 , 3 }
Range = { -2 , 4 , -2 , 1 , 2}
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Use the diagram and the given angle measure to find the other three measures.
$m\angle1=143\degree$ Line segments drawn on a pair of scissors. Two line segments intersect creating obtuse vertical angles 1 and 3 and acute vertical angles 2 and 4.
$m\angle2=$
a
$\degree$
$m\angle3=$
$\degree$
$m\angle4=$
$\degree$
The three measures of the angle are,
Angle 2 = 37°
Angle 3 = 153°
Angle 4 = 37°
When two straight lines or rays intersect at a single endpoint, an angle is created. The intersection of two points is where an angle's vertex is located. The Latin word "angulus," which means "corner," is where the term "angle" originates. The building's corner provided protection, whether it was a projecting portion or a partially covered area. 2a: Dihedral angle and the figure created by two lines that originate from the same point.
I guess refers to two intersecting angle which form 4 angles.
Angles 1 and 2 are supplementary angles whose sum is 180°.
Angle 1 + Angle 2 = 180°
143° + angle 2 = 180°
Angle 2 = 180° - 143°
Angle 2 = 37°
Angles 1 and 3 are vertical angles, therefore treat them as such.
Therefore, it is easy to find their measures because vertical angles are congruent in measures.
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Round 170.65 up to 3 digits
Answer:
Rounding up to 3 decimals = 170.650
Rounding up to Hundreds = 200
There was a base fee of $17.95 and there was an additional charge of 92 cents for each mile driven. Shen had to pay $173.43 when he returned the truck. For how many miles did he drive the truck?
Th number of miles driven by truck is 169.
What is defined as the unitary method?The unitary method is an approach that involves determining the value of a single unit and then calculating the value of the necessary number of units based on that value.The unitary method's formula is to identify the value of a single unit and afterwards multiply that value by the number of units to get the required value.For the given question:
The base fee of the drive = $17.95.
The additional charges are 92 cents for each mile driven.
The additional charges = $0.92
Let 'x' be the miles driven by the truck.
Thus, the total additional charges for the drive of x miles will be: 0.92x.
So, the total charge for truck drive is;
The total charge are given as $173.43.
Total charge = base charge + additional charge
$173.43 = $17.95 + 0.92x
0.92x = $173.43 - $17.95
0.92x = 155.53
x = 169.05
x = 169 miles.
Thus, the total number of miles driven by the truck are 169 miles.
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WILL GIVE BRAINIEST TO BEST ANSWER, PLEASEEE HELP
also show steps/work
The solution of the equation for h is as follows:
h = 2r
How to find h in the equation?The equation is represented as follows:
2πr³ = πr²h
where
r = radiush = heightTherefore, let's make h the subject of the formula
2πr³ = πr²h
Divide both sides by πr²
2πr³ / πr² = πr²h / πr²
h = 2r
Therefore, the solution of the equation for h is as follows:
h = 2r
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A model airplane takes off at an angle of elevation of 30°C. How high will the plane be after traveling 100 feet horizontally? Round to the nearest tenth. Show your work.
A model plane would be 57.7 feet high.
In this question,
A model airplane takes off at an angle of elevation of 30°C
We need to find how much the plane will be high after traveling 100 feet horizontally.
Consider the following diagram.
Let angle ACB is the angle of elevation.
∠ACB = 30°
the horizontal distance CB = 100 feet
We need to find the distance AB.
Consider tangent of angle ACB.
⇒ tan(30) = AB / BC
⇒ 0.577 = AB / 100
⇒ AB = 0.577 × 100
⇒ AB = 57.7 feet
Therefore, a model plane would be 57.7 feet high.
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Solve the following inequality algebraically.
x^2+2x-24< 0
Answer:
-6<x<4
Step-by-step explanation:
x^2+2x-24=0
(x-4)(x+6)=0
x-4=0
x+6=0
x=-6,4
x<-6 false
-6<x<4 true
x>4 false
so -6<x<4
To rotate a point (90°, 180°) counterclockwise about the origin, multiply the y -coordinate by -1 and then interchange, the x - and y -coordinates.
To rotate a point 90° counterclockwise about the origin, multiply the y -coordinate by -1 and then interchange, the x - and y -coordinates are (x,y) -> (-y,x)
What does the term "coordinates" mean?
Coordinates are numerical lengths or angles that uniquely identify locations on two-dimensional (2D) surfaces or in three-dimensional (3D) space ( 3D ). There are various coordinate systems that mathematicians, physicists, and engineers frequently utilize.Rotation of 90° counter-clockwise about origin-
Think about the location (X, Y). You may always swap the x- and y-coordinates and then multiply the new x-coordinate by -1 in order to rotate this point by 90 degrees around the origin in the opposite manner.
This would be expressed mathematically as follows
(x ,y) → ( -y ,x)
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A -4 nc point charge is located at -3 m along the x-axis. what is the electric potential at the origin?
The electric potential at the origin is 11.9834 ×[tex]10^{9}[/tex] .
What is electric potential?V = k (q/r)
V = 8.98755 × [tex]10^{9}[/tex] ×(-4/3)
V= 11.9834 ×[tex]10^{9}[/tex] is the the electric potential at the origin.
The effort required to transfer a unit charge against an electric field from a reference point to a specified spot.
Electric potential difference is the potential created when a charge is moved from one point to another within the field itself, whereas electric potential is the effort done per unit charge to transport the charge from infinity to a point in the electric field.
The amount of work required to move a unit positive charge from infinity to a particular point in an electric field is called the electric potential.
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What’s is four fifths -one third
Answer:
[tex] \frac{7}{15} [/tex]
Step-by-step explanation:
The question is asking us to find the difference between 4/5 and 1/3.
[tex] \frac{4}{5} - \frac{1}{3} [/tex]
First we have to determine the LCM which is 15.
LCM is obtained by multiplying 5 and 3 from the denominators.
Then proceed as follows
[tex] \frac{4}{5} - \frac{1}{3} = \frac{12 - 5}{15} \\ = \frac{7}{15} [/tex]
The solution is therefore
[tex] \frac{7}{15} [/tex]
ow that pn pnQ ) v (pnr
Answer:
brwhwthfv fvqfbqrhwt vwrvqdvqrgdqg
pls help, i rlly dont know what this is
Answer:B
Step-by-step explanation:
Answer:
Step-by-step explanation:
option b is correct
9/4 = 2.25
13.5/6 = 2.25
do the last one yourself
Evaluate (2/3)^2 Give your answer as a fraction in its simplest form.
i wasn't taught this ever
Answer: Most likely 0.44444 (The 4 is repeating.)
Step-by-step explanation:
Because first since its in parenthesis, you would do 2/3 which is 0.6666 repeating. Then you do that to the power of 2 which will give you 0.4 repeating!
Hope this works! If not, I apologize.
Which number is greater, 23 x 10³ or 11 x 104? How do you know? Show your work and explain your steps
Answer:
23x10
Step-by-step explanation:
Its 23x10^3 because its basically because 10 times 10 is a 100 and 100x10 is 10000 and 11x104 will be like 1000 smth (calculate it if u want)
Use the Exterior Angle Inequality Theorem to list all of the angles that satisfy the stated condition.
Measures greater than m ∠ 8
The exterior angle ([tex]\angle[/tex] 5) is larger than either remote interior angle
([tex]\angle[/tex] 7 and [tex]\angle[/tex] 8) then m [tex]\angle[/tex] 2 > m [tex]\angle[/tex] 8 and m [tex]\angle[/tex] 5 > m [tex]\angle[/tex] 8 .
What is meant by Exterior Angle Inequality Theorem?
According to the exterior angle inequality theorem, the measure of any exterior angle of a triangle is greater than the measure of either of the opposite interior angles. The adjacent interior angle and the exterior angle are supplementary. A triangle's exterior angles add up to 360º.
A triangle's exterior angle is always greater than its two remote interior angles.
By the Exterior Angle Inequality Theorem, the exterior angle ([tex]\angle[/tex] 2) is larger than either remote interior angle ([tex]\angle[/tex] 6 and [tex]\angle[/tex] 8).
Similarly, the exterior angle ([tex]\angle[/tex] 5) is larger than either remote interior angle ([tex]\angle[/tex] 7 and [tex]\angle[/tex] 8).
Therefore, m [tex]\angle[/tex] 2 > m [tex]\angle[/tex] 8 and m [tex]\angle[/tex] 5 > m [tex]\angle[/tex] 8 .
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Angle WXYN angle XYZ are complementary angle , M angle WXY equals ( 2X +5) degrees, and M angle YXZ equals (8x-5) degrees
Answer:
x = 9
Step-by-step explanation:
Complementary angles equal to 90 degrees.
So add both equations to equal 90 and solve for x.
(2x+5) + (8x-5) = 90
Combine like terms.
10x = 90
Divide each side by 10.
x = 9
help giving Brainly
find the surface area of the compositite object. show work.
!!100 points!!
determine whether each equation represents a linear function.
-4x + 2y = 10
y = 2x^2 - 3x + 5
x = -5
y = 1.5x
!!!!please explain your reasoning!!!!
The equation -4x + 2y = 10 represents a linear function
[tex]y = 2x^2 - 3x + 5[/tex] represents a non-linear function
x = -5 represents a linear function
y = 1.5x represents a linear function
The linear functions don't have any exponents higher than 1. Some of them don't have variables at all, and if they do, they have just plain x, which is equal to x to the first power.
When a linear function is written in its simplest form, it looks like y = a + bx, where a and b are both constants.
-4x + 2y = 10 represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
[tex]y = 2x^2 - 3x + 5\\[/tex] represents a non-linear functions as it lies in the plain (x-y) and it has power higher than 1. The highest power of the exponent is 2.
x = -5 represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
y = 1.5x represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
Therefore, equations -4x + 2y = 10 , x = -5 , y = 1.5x are linear functions.
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The equation -4x + 2y = 10 represents a linear function
[tex]y = 2x^2 - 3x + 5[/tex] represents a non-linear function
x = -5 represents a linear function
y = 1.5x represents a linear function
The linear functions don't have any exponents higher than 1. Some of them don't have variables at all, and if they do, they have just plain x, which is equal to x to the first power.
When a linear function is written in its simplest form, it looks like y = a + bx, where a and b are both constants.
-4x + 2y = 10 represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
[tex]y = 2x^2 - 3x + 5[/tex] represents a non-linear functions as it lies in the plain (x-y) and it has power higher than 1. The highest power of the exponent is 2.
x = -5 represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
y = 1.5x represents a linear function as it follows both the rule that is it lies in a plain(x-y) and also have exponents with power not higher than 1.
Therefore, equations -4x + 2y = 10 , x = -5 , y = 1.5x are linear functions.
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