7. What equation is represented by this illustration?OOOOOOOOO A 2x + 4 = 8x +1OB. 42 - 2 = 2 - 8O 0.42 +2 = 8O D.4.2 + 2 = 2 +8
Answers
We have 4 x's and 2 "units" in the left side. We know that this is equal or equivalent to one X and 8 units, pictured in the right side.
So we can write the left side as: 4x+2
And the rigth side as: x+8
As both sides are equal, we can write:
[tex]4x+2=x+8[/tex]The answer is Option D: 4x+2=x+8
Related Questions
find the median of 79,27,24,11,14,11
Answers
To get the median of the distribution, we need to re-arrange the data in either ascending or descending order
Re-arranging the data in ascending order, we have
11, 11, 14, 24, 27, 79
There are two numbers that falls in the midle of the distribution, that is 14 and 24
The median = (14 + 24)/2 = 38/2
=19
The answer is 19
1593 concert tickets were sold for a total of $22,491. If students paid $11 and nonstudents paid $17, how many student tickets were sold?
Answers
765 student tickets were sold
Explanation:Let the number of student tickets be represented by x
Let the number of nonstudent tickets be represented by y
1593 concert tickets were sold
x + y = 1593....................(1)
The total amount made = $22491
Cost of each student ticket = $11
Cost of each nonstudent ticket = $17
This can be interpreted mathematically as:
11x + 17y = 22491...............(2)
Mulitipy equation (1) by 17
17x + 17y = 27081...........(3)
Subtract equation (2) from equation (3)
6x = 4590
x = 4590/6
x = 765
765 student tickets were sold
Write a polynomial function of least degree with the given zeros: -2, 1,4
Answers
Since we want a polynomial p(x) with zeros -2,1 and 4, we have the following expression:
[tex]p(x)=(x-(-2))(x-1)(x-4)[/tex]If we multiply these factors we get:
[tex]\begin{gathered} p(x)=(x+2)(x-1)(x-4) \\ \Rightarrow p(x)=(x^2+x-2)(x-4) \\ \Rightarrow p(x)=x^3-4x^2+x^2-4x-2x+8 \\ p(x)=x^3-3x^2-6x+8 \end{gathered}[/tex]Therefore, the polynomial function with the given zeros is p(x)=x^3-3x^2-6x+8
The maximum grade allowed between two stations in a rapid transit rail system is 3.5%. Between station a and station b which are 290 feet apart, the tracks rise 8 ft. What is the grade of the tracks between these stations ? Round the answer to the nearest tenth of a percent. Does this grade meet the rapid transit rails standards?
Answers
Given,
Station A and Station B are 290 feet apart.
Tracks rise 8 feet.
We need to find the slope of the tracks, because the slope of the track is the gradient of the track.
The slope is rise over run.
The rise is "8"
The run is "290"
Hence, the slope is >>>>>
[tex]\frac{8}{290}\approx0.027586[/tex]To convert it to a percentage, we multiply by 100. Thus,
[tex]0.027586\times100\approx2.76\%[/tex]This is within the tolerance range of less than 3.5%.
So, this grade meets the rapid transit rail standards.
AnswerGrade of tracks = 2.8%Yes, it does meet the rapid transit rail standards.How to find the distance of a circle given points (-2.1,1.5) and (0.8771,0)
Answers
Given:
There are given the two points of the circle:
[tex](-2.1,1.5)\text{ and (0.8771,0)}[/tex]Identify the center of the circle defined by the equation (x + 4)² + (y - 1)² = 32
Answers
Answer:
The centre of the circle is (-4,1).
Explanation
Given the equation of the circle:
[tex]\mleft(x+4\mright)^2+(y-1)^2=32[/tex]Comparing with the standard form of the equation of a circle:
[tex]\begin{gathered} (x-h)^2+(y-k)^2=r^2 \\ Where\; Centre=(h,k) \end{gathered}[/tex]We see that:
[tex]\begin{gathered} x-h=x+4 \\ \implies h=-4 \\ \text{Also:} \\ y-k=y-1 \\ \implies k=1 \end{gathered}[/tex]The centre of the circle is (-4,1).
if given the function y=-3x+5,what is the output if f(x)=4
Answers
To solve this problem, we have to evaluate when f(x) = 4. Remember that y = f(x)
[tex]\begin{gathered} y=-3x+5\rightarrow f(x)=-3x+5 \\ 4=-3x+5 \end{gathered}[/tex]Then, we solve for x
[tex]\begin{gathered} 4-5=-3x \\ -3x=-1 \\ x=-\frac{1}{-3} \\ x=\frac{1}{3} \end{gathered}[/tex]Hence, th
6in 4in 3in 8in 3in 4in area of irregular figures
Answers
6. Which of the following statements are true? 4 is a perfect cube 8 is a perfect square 100 is a perfect square 35 is a perfect cube
Answers
First statement: 4 is NOT a perfect cube, because it cannot be written as the cube of a rational number.
Second statement: 8 is NOT a perfect square because it cannot be written as the square of a rational number.
Third statement: 100 IS a PERFECT square, because ic can be written as 10^2 *the square of the number 10)
Fourth statement: 35 is NOT aperfect cube because it cannot be written as the cube of a rational number.
Therefore the only TRUE statement is the third one:
"100 is a perfect square".
For questions 6 – 10, find the unknown side length. number 10
Answers
10) Given:
hypotenuse = 20
angle = 45°
To find:
length of s
angle = 45
opposite = side opposite the angle = s
To find the value of s, w will apply sine ratio (SOH)
[tex]sin\text{ 45 = }\frac{opposite}{hypotenuse}[/tex][tex]\begin{gathered} sin\text{ 45 = }\frac{s}{20} \\ s\text{ = 20sin45} \\ sin\text{ 45 = }\frac{\sqrt{2}}{2} \\ \\ s\text{ = 20}\times\frac{\sqrt{2}}{2} \\ s\text{ = 10}\sqrt{2}\text{ \lparen exact answer\rparen} \end{gathered}[/tex][tex]\begin{gathered} s\text{ = 20sin45} \\ s\text{ = 20\lparen0.7071\rparen} \\ s\text{ = 14.142 \lparen decimal approximation\rparen} \end{gathered}[/tex]9) A notebook costs $3.50 and a binder costs $6.70. Jessica bought m binders. She also bought 4 fewernotebooks than binders. Write an algebraic expression for the total amount she spent.
Answers
Explanation:
We are told that a notebook costs $3.50 and a binder costs $6.70
If we represent the number of notebooks to be n and binders to be m
Also, we are told that she bought 4 fewer notebooks than binders
Then, we can say that
[tex]n=m-4[/tex]The total amount spent can be obtained using the basic principle
[tex]Amount=cost\text{ per unit}\times quantity\text{ sold }[/tex]Therefore
we have
[tex]Total\text{ Amount}=3.50(n)+6.70(m)[/tex]But, we have established that n = m-4
Thus
[tex]Total\text{ amount =3.5\lparen m-4\rparen+6.7\lparen m\rparen}[/tex]The total amount in terms of the binders will be
[tex]\begin{gathered} 3.5m-14+6.7m \\ 3.5m+6.7m-14 \\ 10.2m-14 \end{gathered}[/tex]Thus,
we can also express the total amount in terms of the binders as
[tex]Total\text{ amount }=10.2m-14[/tex]Use the given cost table for the same product from two different companies to create alinear system. Then solve the system to determine when the cost of the product will be thesame and what the price will be.Two online spice retailers sell paprika by the pound using the following pricing chart.Paprika (lb)iSpicei(x)SpiceMagics(x)1$19.75$65.252$34.50$49.25$76.50$87.7534$64.00$99.00i(x) =x + 5Sim)s(x) = 11.25x +forBoth iSpice and Spice Magic charge $pounds of paprika.
Answers
g(n) = 2n+6
c(n) = 2.25n+4
Both Chef Mate and Grocery Gourmet charge $22 for 8 ounces of vanilla extract.
From the question, we have
g(n) = 2n+6
c(n) = 2.25n+4
g(n) = c(n)
2n+6 = 2.25n+4
0.25n = 2
n = 8
g(n) = 2n+6
=2*8+6
=22
Multiplication:
Finding the product of two or more numbers in mathematics is done by multiplying the numbers. It is one of the fundamental operations in mathematics that we perform on a daily basis. Multiplication tables are the main use that is obvious. In mathematics, the repeated addition of one number in relation to another is represented by the multiplication of two numbers. These figures can be fractions, integers, whole numbers, natural numbers, etc. When m is multiplied by n, either m is added to itself 'n' times or the other way around.
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Sandy was shopping and saw that 4lbs of meat costs $8.00. Calculate the unit price for 1 oz of the meat. $____
Answers
To answer this question first we convert from lbs to oz.
Recall that:
[tex]1\text{ lb = 16 oz.}[/tex]Therefore,
[tex]4\text{ lbs= 64 oz.}[/tex]Now, since 64 oz cost $8.00, then the cost of 1 oz of meat is:
[tex]\frac{8.00}{64}\text{dollars}\approx0.13\text{ dollars.}[/tex]Answer: $0.13.
The function h(x) shown is the result of adding two functions, f(x) and g(x).
Which statement could be used to describe the functions?
Answers
The domains of both f(x) and g(x) must be (–∞, ∞).
What is a domain?
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).
Here, we concluded that
The domains of both f(x) and g(x) must be (–∞, ∞).
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Three teachers handed out mathand science textbooks for theirclasses. Two teachers had21 students each, and the lastteacher had 22. How manytextbooks were handed outaltogether?
Answers
Given Data:
The number of teachers is, 3.
Two teachers had 21 students each.
The last teacher had 22.
Since, two teachers had 21 students each, the number of textbooks handed out by these two teachers can be calculated as,
[tex]21\times2=42[/tex]Therefore the total number of text books handed out is,
[tex]42+22=64[/tex]Thus, 64 textbooks were handed out altogether.
How many quarts of pure antifreeze must be added to 3 quarts of a 50% antifreeze solution to obtain a 60% antifreeze solution?quart(s) of pure antifreeze must be added(Round to the nearest tenth as needed.)
Answers
Initially we have 3 quarts of a 50% antifreeze solution
We want to obtain a 60% antifreeze solution by adding x quarts of pure antifreeze
Therefore we can set the following equation,
[tex]1x+0.5*3=0.6*(x+3)[/tex]where x are the quarts of pure antifreeze added
let's solve for x
[tex]\begin{gathered} x+1.5=0.6x+1.8 \\ x-0.6x=1.8-1.5 \\ 0.4x=0.3 \\ x=\frac{0.3}{0.4} \\ x=0.75 \end{gathered}[/tex]rounding to the nearest tenth, 0.8 quarts of pure antifreeze must be added
What is the image of (-8, -1) when it isreflected across the line y=x?A (-1, -8) C (1,8)B(1-1)D8
Answers
Give the object with a coordinate (-8,-1)
The transformation of an object with coordinate (x,y) reflected across the line y=x is given by
T(x,y) => (y,x)
So for the question given
If (-8,-1) is reflected across the line y = x
Then
T(-8,-1) => (-1, -8)
Answer = (-1,-8)
Lora rents a car while spending her vacation traveling in Brazil. When she returns the car, she has driven 1350 miles and used about 54 gallons of gas. If gas costs an average of $4.969 per gallon, estimate how much she spent on fuel.
Answers
Given:
distance Lora has driven = 1350 miles
amount of gas she used = 54 gallons
cost of gas per gallon = $4.969
The amount she spent o fuel can be calculated using the formula:
[tex]\text{Amount she has spent on fuel = cost per gallon }\times\text{ amount of fuel she has used }[/tex]Substituting we have:
[tex]\begin{gathered} \text{Amount she has spent on fuel = \$5 }\times\text{ 5}5 \\ =\text{ }275 \end{gathered}[/tex]Answer:
Hence, Lora has spent $275 on fuel by estimate
The following triangles are scaled copies of each other. What is the scale factor? The scale factor is? What is the length of x? What is the length of y?
Answers
If we divide corresponding sides, we can obtain the scale factor:
24/6 = 4
Lenght of x
x/8 =4
Solve for x
x=4 (8)
x= 32
Lenght of y:
36/y=4
Solve for y
36/4=y
9=y
Find the value of x. 14 6 / 110° 9 70
Answers
We are given a triangle crossed by two parallel lines. The lines are parallel since their corresponding angles are the same. Therefore, from Thale's theorem we have the following relationship:
[tex]\frac{14}{6}=\frac{x}{9}[/tex]Now we solve for "x" by multiplying by 9 on both sides of the equation:
[tex]\frac{14}{6}\times9=x[/tex]Solving the operations we get:
[tex]21=x[/tex]Therefore, x = 21
Which of the following is the co-function of cos 58 degrees?tan 58°sin 58°cos 32°sin 32°
Answers
ANSWER
[tex]\sin 32^o[/tex]EXPLANATION
We want to find the cofunction of the given function.
The cofunction of a cosine function is:
[tex]\cos (\theta)=\sin (90-\theta)[/tex]Therefore, the cofunction of cos(58) is:
[tex]\begin{gathered} \cos (58)=\sin (90-58) \\ \cos (58^o)=\sin (32^o) \end{gathered}[/tex]That is the answer.
If we consider only the cost of gasoline, how much does it cost ( in dollars) to drive each mile ? Round to the nearest cent.
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Given:
The cost of gasoline, c=$2.20/gallon.
The car gets x=26 miles per gallon.
The cost to drive each mile if gasoline costs $2.20/gallon is
[tex]\begin{gathered} T=\frac{c}{x} \\ =\frac{\frac{2.20\text{ dollars}}{1\text{ gallon}}}{\frac{26\text{ miles}}{1\text{ gallon}}} \\ =\frac{2.20\text{ dollars}}{1\text{ gallon}}\times\frac{1\text{ gallon}}{26\text{ miles}} \\ =0.08 \end{gathered}[/tex]Therefore, the two fractions for obtaining the solution is,
[tex]\begin{gathered} \frac{2.20\text{ dollars}}{1\text{ gallon}} \\ \frac{1\text{ gallon}}{26\text{ miles}} \end{gathered}[/tex]The cost in dollars to drive each mile is $0.08 per mile (rounded to nearest cent).
Earn,deposit, increase and raise all have positive valuesTrue or False
Answers
We will have the following:
*Earn: By definition represents a positive value, since you cannot "earn" a negative quantity.
*Deposit: Deposits are "neutral" since they represent the movement of money but not neccesarily an increase, and sometimes it can be also a payment, so it can also be net negative.
*Increase: By definition is a positive value.
*Raise: By definition is a positive value.
So, it is false. Reason:
A deposit represents a net neutral, since it is refering to the movement of money but not it's increase neccesarily, and sometimes is also a negative, since it can be used as payment, thus representing a net negative value.
A ferris Wheel has a radius of 65 feet. What is the circumference of the wheel?
Answers
Circumference of the wheel = 408.2 ft
Explanation:radius = 65 ft
Circumference of the wheel = circumference of a circle
Circumference of a circle = 2πr
π = 3.14
Circumference of a circle = 2 × 3.14 × 65
Circumference of a circle = 408.2 ft
Circumference of the wheel = 408.2 ft
How many weeks are in 259 days
Answers
SOLUTION
We want to find the number of weeks in 259 days
Now, 7 days make a week. So to get the number of weeks in 259 days, we divide the 259 by 7, we get
[tex]\frac{259}{7}=37[/tex]So the answer is 37 weeks
Given the function h(x) = x^2 + 3x - 1 determine the average rate of change of the function over the interval -7 ≤ x ≤ 5
Answers
Given:
[tex]x^2+3x-1[/tex]Find: average rate of change of the function over the interval -7 ≤ x ≤ 5
Explanation: the average rate of change of the function is
[tex]\begin{gathered} \frac{f(b)-f(a)}{b-a} \\ \end{gathered}[/tex][tex]\begin{gathered} f(b)=f(5)=5^2+15-1 \\ =25+15-1 \\ =39 \\ f(a)=f(-7)=(-7)^2-21-1 \\ =49-22 \\ =27 \end{gathered}[/tex][tex]\frac{f(b)-f(a)}{b-a}=\frac{39-27}{5-(-7)}=\frac{12}{12}=1[/tex]Final answer: the required answer is 1.
Select the correct answer. 3(r + 4) – 2(1 - 1) Which is the simplified form of the expression OA. - 1 OB. 67 101 + 9 O C. 3 Tot + 5 2 76 OD. 15 + 101 Undo Next
Answers
We have the expression:
[tex]3(\frac{7}{5}x+4)-2(\frac{3}{2}-\frac{5}{4}x)[/tex]We simplify it as follows:
[tex]\frac{21}{5}x+12-3+\frac{5}{2}x\Rightarrow(\frac{21}{5}x+\frac{5}{2}x)+(12-3)[/tex][tex]\Rightarrow\frac{67}{10}x+9[/tex]From this, we have that the solution is the B option.
Factor 2x^2 - 10x - 12.2(x + 2)(x - 3) 2(x - 6)(x + 1)2(x - 1)(x + 6)
Answers
The factor is 2(x+1)(x-6).
From the question, we have
2x²-10x-12
=2x²-12x+2x-12
=2x(x-6)+2(x-6)
=(2x+2)(x-6)
=2(x+1)(x-6)
Factors :
The positive integers that can divide a number evenly are known as factors in mathematics. Let's say we multiply two numbers to produce a result. The product's factors are the number that is multiplied. Each number has a self-referential element. There are several examples of factors in everyday life, such putting candies in a box, arranging numbers in a certain pattern, giving chocolates to kids, etc. We must apply the multiplication or division method in order to determine a number's factors.The numbers that can divide a number exactly are called factors. There is therefore no residual after division. The numbers you multiply together to obtain another number are called factors. A factor is therefore another number's divisor.
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A box contains the name of every student in the school. One hundred names are drawn from the box and students are asked their opinion of the new pizza served in the cafeteria. (A) biased or(B) unbiased
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This is an unbiased sampling because there is not a systematically opinion that favors some outcomes over others. So the answer is B
In JKL, LJ K L and mZK = 26Find mZJ.
Answers
From the information given, we can draw a triangle.
A rough drawing of the triangle is shown below: