Answers
To subtract fractions, you need a common denominator.
Do the two fractions have a common denominator?
the second one is, 4x+8/5x-5
the third one i think is c (im not sure)
the fourth one is x+2/8x^3+24x^2
Related Questions
Your math teacher allows you to choose the most favorable measure of central tendency of you test scores to determine your grade for the term. On six tests you earn scores of 89,81,85,82,89 and 89. What is your grade to the nearest whole number, and which measure of central tendency should you choose?
Answers
Answer:
89; the mode
Step-by-step explanation:
Final answer:
The best measure of central tendency for the student's test scores is the mode, which is 89. The mean and median are 86 and 87 respectively, but the mode gives the highest score, hence it is the most favorable for determining the student's final grade.
Explanation:
The question asks for the most favorable measure of central tendency for a student's test scores to determine their final grade. The test scores provided are 89, 81, 85, 82, 89, and 89.
To find the most favorable measure, we need to calculate the mean (average), median, and mode of the test scores. The mean is calculated by adding all the scores together and dividing by the number of tests. The median is the middle number when the scores are listed in order, and the mode is the number that appears most frequently.
Calculating the mean: (89 + 81 + 85 + 82 + 89 + 89) / 6 = 85.83, which we round to the nearest whole number as 86.
To find the median, we order the scores: 81, 82, 85, 89, 89, 89. Since there are an even number of scores, the median is the average of the two middle numbers, in this case, 85 and 89. Thus, the median is (85 + 89) / 2 = 87.
The mode is the most frequent score, which is 89.
Out of the mean, median, and mode, the mode is the highest and most favorable measure of central tendency for the student, resulting in a final grade of 89 when rounded to the nearest whole number.
Dominic, Ralf and Peter have just eaten a HUGE Christmas meal. Dominic now weighs half as much as Ralph, and Peter weighs three times as much as Dominic. Together they weigh 720 pounds. How much does Dominic weigh?
Answers
2D = R
3D = P
P + R + D = 720
Now, we substitute values into the last equation:
3D + 2D + D = 720
6D = 720
D = 120
Dominic's weight is 120 pounds
Is the line through points P(–8, –10) and Q(–5, –12) perpendicular to the line through points R(9, –6) and S(17, –5)? Explain.
...?
Answers
Below are the choice that can be found from other source:
No; one line has zero slope, the other has no slope.
Yes; the lines are both vertical.
Yes; the lines have equal slopes.
No; the lines have unequal slopes
I think the answer is the first one.
Answer: No, the line through points P(–8, –10) and Q(–5, –12) is not perpendicular to the line through points R(9, –6) and S(17, –5).
Step-by-step explanation:
Two lines are called perpendicular to each other if the product of their slope is -1.
Since, the slope of a line having end points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is,
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Thus, the slope of line Joining points P(–8, –10) and Q(–5, –12),
[tex]m_1=\frac{-12+10}{-5+8}=\frac{-2}{3}=-\frac{2}{3}[/tex]
While, The slope of line Joining points R(9, –6) and S(17, –5),
[tex]m_2=\frac{-5+6}{17-9}=\frac{1}{8}[/tex]
Since,
[tex]m_1\times m_2=-\frac{2}{3}\times \frac{1}{8}=-\frac{1}{12}\neq -1[/tex]
Thus, the line through points P(–8, –10) and Q(–5, –12) is not perpendicular to the line through points R(9, –6) and S(17, –5).
356 added to the product of 56 and an unknown number is equal to -832 what is the equation for the given statement
Answers
eqn: 56y+356=-832
The Answer:
356+56y=-832
What is the equation of a line that is parallel to 2x+3y=3 and passes through the point (3,−4)?
Answers
the slope for ax+by=c is -a/b
that means that a line paralell to 2x+3y=3 will have 2x+3y=something
find that something
given
(3,-4)
x=3 and y=-4 is a soltuion
2x+3y=something
2(3)+3(-4)=something
6-12=something
-6=something
2x+3y=-6
Which of the following is an example of why irrational numbers are 'not' closed under addition?
√4 + √4 = 2 + 2 = 4, and 4 is not irrantonal
1/2 + 1/2 = 1, and 1 is not irrational
√10 + (-√10) = 0, and 0 is not irrational
-3 + 3 = 0, and 0 is not irrational
Answers
First option isn't true because we have to start with irrational numbers and √4 = 2 is rational number.
second option also isnt true because again we have to start with irrational numbers and we are starting with 1/2 which is rational.
Third one is true
√10 and -√10 are 2 irrational numbers which some is 0 which is rational.
last one isn't true because of same reason as 1 and 2 options.
Answer is third option.
Answer:
Step-by-step explanation:
its answer C !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A bag contains
10
marbles:
4
are green,
2
are red, and
4
are blue. Linda chooses a marble at random, and without putting it back, chooses another one at random. What is the probability that both marbles she chooses are blue? Write your answer as a fraction in simplest form.
Answers
Final answer:
The probability that both marbles chosen by Linda are blue is 2/15, calculated by multiplying the probability of selecting a blue marble on each draw without replacement.
Explanation:
To calculate the probability that Linda selects two blue marbles in a row without replacement, we need to consider the number of blue marbles and the total number of marbles in the bag during each draw. Initially, there are 10 marbles in total with 4 blue marbles. The probability of drawing a blue marble on the first draw is therefore 4/10.
Upon successfully drawing a blue marble the first time, the marble is not replaced, meaning there are now only 9 marbles left with 3 being blue. The probability of drawing a second blue marble is now 3/9, which simplifies to 1/3.
To find the total probability of both events occurring in sequence (both draws resulting in blue marbles), we multiply the probabilities of each individual event occurring:
(4/10) × (3/9) = (2/5) × (1/3) = 2/15.
Therefore, the probability that both marbles Linda chooses are blue is 2/15.
when traveling in europe,bailey converts the temperature given in degrees celsius to a fahrenheit temperature by using the expression 9x÷5 32, where x is the celsius temperature.find the temperature in degrees fahrenheit when it is 15°c
Answers
To convert 15°C to Fahrenheit, we use the formula °F = (9/5 x °C) + 32, which will give us 59°F as the equivalent temperature. The formula is based on the freezing and boiling points of water in the two scales.
Explanation:To convert a temperature given in degrees Celsius to Fahrenheit, we use the formula °F = (9/5 × °C) + 32. In this case, where the Celsius temperature (x) is 15, we substitute 15 into the formula: °F = (9/5 * 15) + 32. The calculation then becomes °F = 27 + 32 = 59°F, meaning 15°C is equivalent to 59°F on a Fahrenheit scale.
The formula is derived from the fact that the freezing point of water is 0°C (32°F) and the boiling point is 100°C (212°F). On the Fahrenheit scale, that's a range of 180 (212 - 32), and on the Celsius scale, it's 100 (100 - 0), which gives us the ratio 180/100 or 9/5.
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multiply (x-4)(x^2-5x-6) ...?
Answers
Answer:
The answer is: [tex]x^3-9x^2+14x+24[/tex]
Step-by-step explanation:
The given expression is: [tex](x-4)(x^2-5x-6)[/tex]
For getting the product, we need to distribute [tex](x-4)[/tex] with each term in the second parenthesis. So.....
[tex](x-4)(x^2-5x-6)\\ \\ =x^2(x-4)-5x(x-4)-6(x-4)\\ \\ =x^3-4x^2-5x^2+20x-6x+24 \ [using\ distribution\ rule]\\ \\ =x^3-9x^2+14x+24\ [combining\ like\ terms][/tex]
So, the answer is: [tex]x^3-9x^2+14x+24[/tex]
The John Deere company has found that the revenue from sales of heavy-duty tractors is a function of the unit price p that it charges. The revenue R is given by the following function.
R(p)= (-1/2)p^2+1520p
What unit price p should be charged to maximize revenue? Give your answer correct to the nearest dollar. ...?
Answers
To maximize revenue for John Deere's heavy-duty tractors, the optimal unit price is found by determining the vertex of the provided quadratic revenue function R(p). Using the vertex formula, the unit price p that maximizes revenue is $1520.
Maximizing Revenue for John Deere Heavy-Duty Tractors
To find the unit price that maximizes revenue for John Deere heavy-duty tractors, we need to analyze the revenue function R(p) provided, which follows a quadratic format:
R(p) = [tex](-1/2)p^2[/tex] + 1520p
To find the maximum revenue, we can use the fact that the vertex of a parabola described by a quadratic equation y = ax^2 + bx + c provides the maximum or minimum value of the function. Since our equation is in the form of a parabola opening downwards (because the coefficient of p^2 is negative), the vertex will give us the maximum revenue point.
The formula for the p-coordinate (horizontal axis) of the vertex of a parabola is given by -b/(2a). In this case, a = -1/2 and b = 1520, therefore:
p = -b/(2a) = -1520/(2 * (-1/2)) = -1520/(-1) = 1520
Hence, the unit price p should be set at $1520 to maximize revenue for the sale of heavy-duty tractors. This value is already an integer, so rounding to the nearest dollar is not necessary.
Consider the surface given by
2x^2+5y^2+z^2=4.
The surface is sliced by planes of the form x=a, y=b or z=c for values of a, b, c given below. How do I match the resulting slices (in other words, the corresponding traces) with their correct plots?
-- Also the slices are:
1. z= 1.5
2. x= 1
3. z=0
4. y=0
Answers
The student can match each slice of the surface 2x^2+5y^2+z^2=4 with its correct plot by substituting the slice values into the equation, resulting in a set of new equations each representing a different conic section centered at the origin.
Explanation:To understand the shapes or plots of the resulting slices when the surface given by 2x^2+5y^2+z^2=4 is sliced by planes of the form x=a, y=b or z=c, you must substitute values of a, b, and c into the equation of the surface to reveal new equations describing the slices.
Let's take z=1.5 as example. Substituting z with 1.5 into the equation, we get 2x^2+5y^2+(1.5)^2=4. This simplifies to 2x^2+5y^2=2.25. This is the equation for an ellipse centered at the origin on the xy plane.Substituting x=1 into the equation gives us 2*(1)^2+5y^2+z^2=4. This simplifies to 5y^2+z^2=2, another ellipse but centered at the origin on yz plane.Substituting z=0, gives us the equation 2x^2+5y^2=4. This is the equation of an ellipse in the xy plane centered at the origin.Finally, substituting y=0 into the equation results in 2x^2+z^2=4. This is the equation of a circle in the xz plane centered at the origin.By comparing these resulting equations with the standard forms of conic sections (circle, ellipse), you can match them with their correct plots.
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Solve the system of equations below by graphing them with a pencil and paper. Enter your answer as an ordered pair.
y = 2x - 3 y = -2x + 5 ...?
Answers
y = -2x + 5 . . . (2)
Equating (1) and (2),
2x - 3 = -2x + 5
2x + 2x = 5 + 3
4x = 8
x = 8/4 = 2
x = 2
y = 2(2) - 3 = 4 - 3 = 1
y = 1
Solution = (2, 1)
Answer:
Solution is (2,1)
Step-by-step explanation:
In order to graph both lines ,we need to find the X and Y intercepts for both equations
Lets take equation y =2x -3
To find y intercept ,we plug x =0 ,we get y =2(0)-3 = 0-3 =-3
Y intercept is (0,-3) Which is point 'C' in the graph
To find X intercept ,we plug y =0 ,we get 0 = 2x-3 or x = 3/2 or 1.5
X intercept is (1.5,0) Which is point D in the graph.
Lets take equation y =-2x+5
To find y intercept ,we plug x =0 ,we get y = -2(0)+5 = 0+5 = 5
Y intercept is (0,5) which is point A in the graph .
To find X intercept ,we plug y =0 ,we get 0 =-2x+5 or x = 5/2 or 2.5
X intercept is (2.5,0) which is point B on the graph
After getting intercept of both lines ,we plot both lines
In the graph Blue line shows y=2x-3 and Red line shows y =-2x+5
both lines intersect at point E which is called the solution of both equation
which is given to be (2,1)
A piece of paper is cut and then folded into rectangular prism as shown below.
Which side is the bottom, and which side is on the left of the rectangular prism?
A. C is on the bottom, B is on the left
B. B is on the bottom, C is on the left
C. A is on the bottom, E is on the left
D. B is on the bottom, E is on the left
Answers
Answer: B is on bottom, C is on the left
Step-by-step explanation:
A is on top and B is opposite of A. Therefore, it's on bottom and C is on the left as E is on the right.
The bottom of the rectangular prism is side C, and the left side is side B.
Explanation:To determine which side is the bottom and which side is on the left of the rectangular prism, we need to visualize how the paper was cut and folded. Let's assume that the original piece of paper had the letters A, B, C, D, E, and F on it. After folding, the side with the letter C will be the bottom of the rectangular prism, and the side with the letter B will be on the left. So, the correct answer is A. C is on the bottom, B is on the left.
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A certain chain of ice cream stores sells 28 different flavors, and a customer can order a single-, double- , or triple-scoop cone. suppose on a multiple-scoop cone that the order of the flavors matter and that the flavors can be repeated.how many possible cones are there? ...?
Answers
There are 22,764 possible cones.
Explanation:To calculate the number of possible cones, we need to consider the number of flavors and the number of scoops. Since a customer can order a single-, double-, or triple-scoop cone, we will consider each case separately.
For a single-scoop cone, the customer can choose one flavor out of the 28 available flavors. Therefore, there are 28 possible single-scoop cones.
For a double-scoop cone, the customer can choose two flavors for the two scoops. Since the order of the flavors matters and repetition is allowed, we can think of this as selecting two flavors with replacement. Using the formula n^r, where n is the number of flavors and r is the number of scoops, there are a total of 28^2 = 784 possible double-scoop cones.
For a triple-scoop cone, the customer can choose three flavors for the three scoops. Again, using the formula n^r, there are a total of 28^3 = 21,952 possible triple-scoop cones.
Therefore, the total number of possible cones is 28 + 784 + 21,952 = 22,764.
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What is the solution to this inequality?
16 + x > 30
A. x > 14
B. x >-14
C. x > -46
S. x > 46
Answers
Reason: subtract 16 to both sides. 16 - 16 = 0, so x is by itself. 30 - 16 = 14. Hence, x > 14
What's an equation for A new plasma-screen television costs $5250. A family makes a down payment of $552 and pays off the balance in 24 equal monthly payments. ...?
Answers
C = D - C / M
Cost = Deposit - Cost / Months
5250 = 5250 - 552 / 24
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Final answer:
To find the amount for the monthly payments for a plasma-screen TV, subtract the down payment from the total cost and divide by the number of installments. The equation is: Monthly Payment = (Total Cost - Down Payment) / Number of Installments, which calculates to $195.75.
Explanation:
The student is seeking to find an equation that represents the cost of a plasma screen television being paid off with a down payment and equal monthly installments. Given the total cost of the television is $5250 and the down payment is $552, we can start by calculating the remaining balance after the down payment, which will be paid in 24 equal monthly payments.
First, subtract the down payment from the total cost to find the balance that needs to be paid in installments:
Total cost of television: $5250Down payment: -$552Balance to be paid in monthly installments: $5250 - $552 = $4698Next, we divide the balance by the number of monthly payments to find the amount of each payment:
Number of monthly payments: 24Monthly payment amount: $4698 / 24 = $195.75Therefore, the equation that represents the monthly payment after the down payment is:
Monthly Payment = (Total Cost - Down Payment) / Number of Installments
Applying the given numbers we get:
Monthly Payment = ($5250 - $552) / 24
Plugging in the values:
Monthly Payment = $4698 / 24 = $195.75
There are 6 female goldfish for every 10 male goldfish in an aquarium. there are 216 female goldfish in the aquarium. how many goldfish are in the aquarium
Answers
Answer:
In Total=560
Step-by-step explanation:
216/6=36
36*10=360
216+360=560
You are remodeling your kitchen. You've contacted two tiling companies who gladly told you how long it took their workers to tile a floor of a similar size. Jim completed half the floor in 7 hours. Pete completed the other half of the floor in 6 hours. If Pete can lay 15 more tiles per hour than Jim, what equation would you use to find the rate that Jim can lay tiles? Let x represent Jim's rate.
explain why the answer is correct
Answers
x - Jim's rate
y - Pete's rate
Jim completed half the floor in 7 hours: 7x = half of the floor
Pete completed the other half of the floor in 6 hours: 6y = half of the floor
So: 7x = 6y
Pete can lay 15 more tiles per hour than Jim: y = x + 15
7x = 6y
y = x + 15
Substitute the second equation into the first one:
7x = 6(x + 15)
Answer:
7x = 6(x+15)
Step-by-step explanation:
a pex
Choose the answer that solves the equation:
7 – 3 + 5 × (6 – 2) = ?
A) 0
B) 16
C) 24
D) 36
Answers
7 - 3 + 5 = 9 × 4 = 36
Answer:b
Step-by-step explanation:
Rosa works due north of home. Her husband Juan works due east. They leave for work at the same time. By the time Rosa is 7 miles from home, the distance between them is one mile more than Juan's distance from home. How far from home is Juan? ...?
Answers
Let b = 7 mi (Rosa's distance from home)
Let a = the east leg (Juan's distance from home
(a+1) = c (hypotenuse, distance between them)
(a+1)^2 = a^2 + 7^2
FOIL (a+1)(a+1)
a^2 + 2a + 1 = a^2 + 49
Combine like terms
a^2 - a^2 + 2a = 49 - 1
2a = 48
a =
a = 24 mi, Juan's distance from home
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Which national legislature has themost members?
Answers
what's 6 diveded by 711
Answers
711 divided by 6 is 118.5
On the first day of the year, Diego had $700 in his savings account and started spending $35 a week. His brother Juan had $450 and started saving $15 a week. After how many weeks will the brothers have the same amount? What will that amount be?
Help !
Answers
Diego's amount after x weeks: 700-35x
Juan's amount after x weeks: 450 + 15x
These are equal so write equation
700-35x =450 +15x
700-450 = 35x +15x
250 = 50x
x = 5 weeks
450 +15*5 = 450 +75 = $525
Owners of a recreation area are filling a small pond with water. They are adding water at a rate of
25
liters per minute. There are
600
liters in the pond to start.
Let
W
represent the amount of water in the pond (in liters), and let
T
represent the number of minutes that water has been added. Write an equation relating
W
to
T
, and then graph your equation using the axes below
Answers
The equation relating W to T is W = 600 + 25T.
Given:
The initial amount of water in the pond is 600 liters.
The water is being added at a rate of 25 liters per minute.
As time (T) increases, the amount of water in the pond (W) will increase due to the constant addition of 25 liters per minute.
The equation can be written as follows:
W = 600 + 25T
In this equation, 600 represents the initial amount of water in the pond (at T = 0), and 25T represents the additional water added for each minute of time (T).
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The expression in the figure below represent the measures of two angle.Find the value of x . f || g . The diagram is not to scale.
Answers
2x and 8x+40 complementary angles
their sum is 180
2x+8x+40=180
10x=140
x=14
Accounts Payable had a normal starting balance of $800. There were debit postings of $600 and credit postings of $300 during the month. The ending balance is a
A. $500 credit.
B. $1,000 debit.
C. $500 debit.
D. $1,000 credit
Answers
So you start with $800-cr
Any debit posting will reduce that normal balance and any credit posting will increase the normal balance.
The $600 debit posting will create a $200 credit balance(800-600)
The $300 credit posting will create a $500 credit balance(300+200)
Answer: A. $500 - Credit.
It may help to figure it out if you create a t-chart and enter the amounts.
Answer:
The correct answer is most definitely A. $ 500 credit
Step-by-step explanation:
I am 100% Positive
Solve log x − 1 16 = 4.
Answers
log(x-1)4^2=4
2.log (x-1)4=4
log (x-1)4=2
log (x-2)2^2=2
2log (x-1)2=2
log (x-1)2=1
[logab=y b=a^y]
b=2 a=x-1 y=1
2=(x-1)^1
x-1=2
x=3
What is the median for the following set of data? 2, 5, 7, 8, 11, 11, 12
Answers
which set of values could be the side lengths of a 30-60-90 triangle?
A. {4,4/3,8/3}
B. {4,4/3,8}
C. {4,4/2,8}
D. {4,4/2,8/2}
Answers
so lets search for that match in offered answers.
A. shortest side is 4√3 and hypothenuse is 8√3 which doesnt match condition.
B. 4 and 8 is just what we need. That is correct answer. but now we need to check third side. It has to be √3 times shortest side. it indeed matches
C. 4 and 8, atches first condition but other side isn't √3 times shortest
D. 4 and 8√2 doesnt match first condition
What is the distance between -3.1 and -5.7 on a number line?
Answers
so your answer should be either -2.6 or 2.6
The distance between -3.1 and -5.7 on the number line is 2.6 units.
The distance between two points on the number line is the absolute difference between those two points.
So, the distance between -3.1 and -5.7 is:
[tex]|-3.1 - (-5.7)| = |-3.1 + 5.7| = |2.6| = 2.6[/tex]
Therefore, the distance between -3.1 and -5.7 on the number line is 2.6 units.