v=1/3(3.14) times 64 times 18
2x+2y=4;8x-2y=-4
Solve for linear equations by ELIMINATION. Show your work.
The solution to the system of given linear equations is x = 0 and y = 2.
What is the equation?The equation is defined as a mathematical statement that has a minimum of two terms containing variables or numbers that are equal.
The system of equations is given in the question, as follows:
2x + 2y = 4 .....(i)
8x - 2y = -4 .....(ii)
To eliminate y, add the two equations together:
2x + 8x = 4 - 4
10x = 0
Solve for x:
x = 0
Now that we have x, we can substitute it back into one of the original equations to find y:
2x + 2y = 4
2(0) + 2y = 4
2y = 4
y = 4/2
y = 2
Thus, the solution is x = 0 and y = 2.
Learn more about the equations here:
brainly.com/question/10413253
#SPJ1
Cassandra is knitting a scarf. She increases the length of
the scarf by 25 centimeters each hour she knits. After 3
hours, the scarf is 125 centimeters long.
The initial length of the scarf is 50 centimeters.
What is slope intercept form of line?The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.
We can use the given information to find the rate at which Cassandra is knitting the scarf and the initial length of the scarf.
Let L be the initial length of the scarf in centimeters, and let r be the rate at which Cassandra is knitting the scarf in centimeters per hour. Then, we have:
L + 25h = length of scarf after h hours
Substituting h = 3 and the length of the scarf after 3 hours = 125, we get:
L + 25(3) = 125
L + 75 = 125
L = 50
Therefore, the initial length of the scarf is 50 centimeters.
To learn more on slope intercept form click:
https://brainly.com/question/9682526
#SPJ9
Cassandra is knitting a scarf. She increases the length of
the scarf by 25 centimeters each hour she knits. After 3
hours, the scarf is 125 centimeters long what is initial length of scarf.
What is the total number of different 10-letter arrangements that can be formed using the letters in the word SPEECHLESS?
The number of ways the letters can be permutated in the word SPEECHLESS is 100800.
What is meant by permutation?
An arrangement of items in a specific order is referred to as a permutation. A set can be permuted by arranging its components in a linear or sequential order, or by rearrangement of its components if the set is already ordered. When the order of the arrangements counts, it is a mathematical technique that establishes the total number of alternative arrangements in a collection. Choosing only a few items from a collection of options in a specific sequence is a common task in arithmetic problems.
The number of letters in SPEECHLESS = 10
The letter E repeats 3 times
The letter S repeats 3 times
The letters P,C,H,L repeats one time.
When there are repeating letters in a word, the total number of distinct ways the letters in the words can be permutated is:
[tex]N= \frac{n!}{r_1!r_2!.....r_m!}[/tex]
where N = number of arrangements
n = number of letters
r = total number of times one letter is repeated in the word
For SPEECHLESS,
Therefore the number of ways the letters can be permutated is:
[tex]N= \frac{10!}{3!3!}[/tex] = 100800
To learn more about permutation, follow the link.
https://brainly.com/question/12468032
#SPJ1
the hockey surface at a community centre is 61 m by 30.5m.FIeld hockey is played outdoors on a surface 91.5 by 54.9m.Which surface has the larger area and by how much?
The area of field hockey is larger by 3162.85 [tex]m^2[/tex].
What is Area ?The amount of unit squares that cover an enclosed figure's surface is its area. Square units like [tex]cm^2[/tex] and [tex]m^2[/tex] are used to measure area. A shape's area is a two-dimensional measurement. The space inside the perimeter or boundaries of a closed shape is known as the "area."
The hockey surface given here is in rectangular shape, so,
Area = length x breadth
Area of the hockey surface at a community centre is,
= 61 m x 30.5 m
=1860.5 [tex]m^2[/tex]
Area of field hockey played at outdoors,
= 91.5 m x 54.9 m
= 5023.35 [tex]m^2[/tex]
Clearly, we can see that area of field hockey is larger.
Difference between both the areas = 5023.35 -1860.5 = 3162.85 [tex]m^2[/tex].
To know more about area, visit:
https://brainly.com/question/1658516
#SPJ1
write the fraction in simplest form.
25/50
Answer:
25/50
will equal to 1/2
5 1/2 ounce of mango has 17 1/2 grams of sugar and 4 ounces of pineapple has 25 grams of sugar
If 5 1/2 ounce of mango has 17 1/2 grams of sugar and 4 ounces of pineapple has 25 grams of sugar, We will be having 7 grams of sugar for one ounce of mango and 6 1/4 grams of sugar for one ounce of pineapple.
The problem states that we have 5 1/2 ounces of mango with 17 1/2 grams of sugar, and 4 ounces of pineapple with 25 grams of sugar. We are asked to determine the grams of sugar per ounce for each type of food. To determine the grams of sugar per ounce for each type of food, we can use the following calculations:
For mango: 5 1/2 ounces is equivalent to 11/2 + 1/2 = 2 ounces + 1 ounce/2, so we have 17 1/2 grams of sugar in 2 1/2 ounces of mango. To find the grams of sugar per ounce, we can divide 17 1/2 by 2 1/2, which gives us 7 grams of sugar per ounce of mango.
For pineapple: 4 ounces of pineapple has 25 grams of sugar. To find the grams of sugar per ounce, we can divide 25 by 4, which gives us 6 1/4 grams of sugar per ounce of pineapple.
Therefore, the grams of sugar per ounce for mango and pineapple are 7 and 6 1/4, respectively.
To learn more about ounces click on,
https://brainly.com/question/29823312
#SPJ4
Complete question is:
5 1/2 ounce of mango has 17 1/2 grams of sugar and 4 ounces of pineapple has 25 grams of sugar. Determine the grams of sugar for ounce for each type of food.
The measure of an angle is 84°. What is the measure of its complementary angle?
Answer:
6°
Step-by-step explanation:
Two angles are called complementary if the sum of their measures equals to 90°:
The complementary angle of 84° = 90° - 84°
= 6°
Answer: 6
Step-by-step explanation:
The complementary angle means the sum of two angles equal to 90. Let x be the other angle.
x + 84 = 90
x = 6
in a simple linear regression model we use the normal quantile plot of the residuals to evaluate if it is reasonable to assume the ___________ come from a normal distribution.
In a simple linear regression model we use the normal quantile plot of the residuals to evaluate if it is reasonable to assume the error term come from a normal distribution.
In a simple linear regression model, the normal quantile plot of the residuals is a graphical tool used to assess the normality assumption of the error term (also known as the residual). The error term represents the difference between the actual value of the dependent variable and the predicted value by the model.
Assuming that the error term follows a normal distribution is important for various reasons. Firstly, the normal distribution is a very common assumption in statistics, and many statistical methods rely on it. Secondly, a normal distribution of the error term is essential for making reliable predictions and for computing valid confidence intervals.
The normal quantile plot of the residuals compares the distribution of the residuals against a theoretical normal distribution. The plot consists of a straight line if the residuals are normally distributed. However, if the plot shows deviations from the straight line, it indicates non-normality in the residuals.
If the normality assumption is not satisfied, we need to explore the reasons for the non-normality and consider alternative methods to analyze the data, such as non-parametric methods.
Therefore, the normal quantile plot of residuals is an essential diagnostic tool in simple linear regression, as it allows us to evaluate the assumption of normality and make appropriate adjustments to the model.
To learn more about regression click on,
https://brainly.com/question/30672101
#SPJ4
What is the solution to the following system of equations
4x+2y=6
X-y=3
Answer:
The solution of the equation 4x + 2y = 6 and x − y = 3 will be D. (2, –1)
Step-by-step explanation:
4x + 2y = 6 ....… (1)
x − y = 3 …..... (2)
Example, for equation 2 is:
x - y = 3
x = 3 + y
Put in equation 1:
4(y + 3) + 2y = 6
4y + 12 + 2y = 6
6y = -6
y = -6/6
y = -1
We have the value of y, then the value of x will be:
x = 3 + y
= 3 + (-1)
= 3 - 1
= 2
So, the solution of the equation 4x + 2y = 6 and x − y = 3 will be (2, –1)
Given ƒ (z) — 5(x − 6)³ + 4, classify each statement about ƒ-¹ (z) as true or false. The point of symmetry on f-¹(x) is (4,6). The domain of f-¹(x) is (-∞,4). The graphs of f¹(x) and f(x) are reflections across the x axis. The range of f¹(x) is (-∞,∞). True False OO O
The correct classification of the statements is: False, True, False, True.
What is Function ?
Function can be defined in which it relates an input to output.
The point of symmetry on f-¹(x) is (4,6).
False. The point (4,6) is not on the graph of f-¹(x), so it cannot be the point of symmetry. We can verify that the function is not symmetric with respect to any vertical or horizontal line.
The domain of f-¹(x) is (-∞,4).
True. The cube root function is defined for all real numbers, so the expression inside the cube root must be nonnegative. Therefore, (z - 4) / 5 ≥ 0, which implies that z ≥ 4. This means that the domain of f-¹(x) is (-∞,4].
The graphs of f¹(x) and f(x) are reflections across the x-axis.
False. The graphs of f¹(x) and f(x) are not reflections across the x-axis. We can plot the functions to see that they have different shapes and are not symmetric with respect to the x-axis.
The range of f¹(x) is (-∞,∞).
True. The cube root function is defined for all real numbers, so f-¹(z) can take any real value. This means that the range of f¹(x) is (-∞,∞).
Therefore, the correct classification of the statements is: False, True, False, True.
To learn more about Function from given link.
https://brainly.com/question/12431044
#SPJ1
Geometry
AC bisects ∠BCD, complete the flowchart proof below. Note that the last statement and reason have both been filled in for you.
FlowChart, Please Help Urgent
Given that AC bisects ∠BCD, the complete flowchart proof is given below:
<ADC = <ABC Reason is given<DCA = <BCA. Reason is AC bisects <BCDAC = AC Reason is their reflexive property.ADC = ABC Reason is the ASA postulate.What is Geometry?One of the first areas of mathematics is geometry, along with arithmetic. It is concerned with spatial characteristics like the separation, shape, size, and relative placement of objects.
A geometer is a mathematician who specializes in geometry.
GIven the shape in the image, the flowchart proof has been completed above.
Read more about geometry here:
https://brainly.com/question/24375372
#SPJ1
−3 + 5 + 6g = 11 − 3g
Answer:
6g+3g=11+3-5
combine like terms
9g=11+3-5
calculate the sum of difference
9g=9
Step-by-step explanation:
reduce the greatest common factor on both sides
of the equation
g=1
Administrators at International University are curious how students' GAs after their first year compare to their high school GPs. They plan on taking an SRS of 80 of the 900 freshmen tor look up their high school GAs. They plan to look at the difference between the mean high school and the mean university GPA for students in the sample (THS - "Uni) at the end of their first vear.
Consider the formula:
02-2, =
- 으
N1
12
Why is it not appropriate to use this formula for the standard deviation of THS - "Uni?
If administrators at International University are curious how students' GAs after their first year compare to their high school GPs. The correct answer is: C. We cannot assume independence between the high school GPAs in the sample.
Why is it not appropriate to use this formula for the standard deviation?The GPAs of the students in the sample at the end of their first year at the university are likely to be correlated with their high school GPAs, as students with higher high school GPAs are likely to perform better in university as well.
Thus, the high school GPAs of the students in the sample are not independent of each other, and using the formula for the standard deviation of the sample would not be appropriate in this situation.
Therefore the correct option is C.
Learn more about sample here:https://brainly.com/question/25736513
#SPJ1
The correct question is:
Administrators at International University are curious how students' GPAs after their fist year compare to their high school GPAs. They plan on taking an SRS of 80 of the 900 freshmen to look up their high school GPAs. They plan to look at the difference between the mean high school and the mean university GPA for students in the sample at the end of their first year. Why is it not appropriate to use the formula for the standard deviation of
The samples are not independent of each other.
We cannot assume independence between the university GPAs in the sample.
We cannot assume independence between the high school GPAs in the sample.
The samples are independent of each other.
Answer: A
Step-by-step explanation:
The sample is sampling the high school GPA and college GPA of the same students meaning the samples are not independent.
Question 7. A boat rental shop rents paddleboats for a fee plus an additional cost per hour. * O
The cost of renting for different numbers of hours is shown in table. Use the table and the
variables to write an equation. Let y = cost and x = hours.
The equation of the given information is y(x) = 5x+10
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between.
Given that cost of renting for different numbers of hours.
The initial cost, regardless of time, is; $10. then the cost will increase at a rate of $5 per hour that the boat is rented.
Therefore, the cost (y) of renting a paddle boat for 'x' hours is:
y(x) = 5x+10
here linear relationship between x and y, where 5 is the slope of the equation, 10 is the y-intercept, the number of hours is the independent variable, and the cost is the dependent variable.
Learn more about equations here;
https://brainly.com/question/25180086
#SPJ9
Uhmmm I don’t know this pla
Answer:
y = 2x - 3
Step-by-step explanation:
Pick two random points for slope
slope = m = rise/run = [tex]\frac{(-3-(-5))}{0-(-1)} = \frac{2}{1} = 2[/tex]
y intercept form:
y = 2x - 3
Segment AC is the angle bisector of
The figure is not to scale.
Which of the following additional statements would allow us to prove that
What does this problem ask for:
--> which statement is sufficient to prove that:
∠ADB ≅ ∠ABD
Let's separate this image into two triangles: ΔADC and ΔABC
--> prove that these triangles are congruent
--> thus proving that: ∠ADB ≅ ∠ABD
Let's consider what evidence we have:
AC is angle bisector of ∠BAD--> thus: ∠ADC = ∠ABC
AC = ACThe minimum information that we have:
--> prove that one pair of sides on both triangles are congruent
--> based on the SSA Triangle Formula
--> Two triangles that have two sides and one angle that are
equal, are therefore congruent
Based on the choices given:
--> if DA = BA or DA is congruent to BA
--> then ΔADC = ΔABC
Thus:
--> ∠ADC = ∠ABC
Answer: DA is congruent to BA
What are the answers for this
PROBABILITY IN FRACTIONS PLSSSSSSS
I NEED HELP ON THIS FAST
4x+1/20x³ + 2⁹x²³-10X
Answer: [tex]5x^{2} +6x[/tex][tex]-4[/tex]
Step-by-step explanation:
Synthetic division
refer to the previous two questions: what is the probability that only one of the two failure modes will occur over the life of the building? (answer correct to 3 decimal places) hint: start by thinking components of the event failure by only one mode (what options does that imply?)
Probability that only one of the two failure modes will occur over the life of the building is 0.11
The probability for failure of building
P (Failure) = P(C U E)
= P(C) - P(E) - P(CUE) - P(C|E)P(E)
Substitute 0.05 for P(C) 0.1 for P(E) and 0.2 for PC/E) in equation to find the probability for failure.
P(failure) = P(CUE)
= 0.05 +0.1 -0.2 x 0.1
= 0.13
Probability that only one of the two failure modes will occur over the life of the building
P(CE U EC) = P(ČE) + P(EC)
= P(C U E) - P(EC)]
= P(CUE) - P(C|C)P(E)
Substitute 0.13 for P(CUE) 0.1 for P(E) and 0.2 for P(CIE) in equation (3) to find P(CE UĒC).
P(CE U EC) - 0.13 - (0.2 x 0.1)
= 0.11
Hence,
Probability that only one of two failure modes will occur over the life of the building is 0.11.
Learn more about probability here brainly.com/question/11234923
#SPJ4
Find the perimeter and area of the triangle.
Answer: Perimeter: [tex]10mn^2+4m^2[/tex]; Area : [tex]6m^3n^2[/tex]
Step-by-step explanation: For Perimeter add like terms 7mn^2 and 3mn^2 add but 4 m^2 isolates. For area multiply 3 mn^2 and 4m^2 to get 12 m^3n^2 and then divide by 2 because it is right triangle.
A circle has a radius of 3 inches. What is the circumference of the circle? (Use 3.14
for pi.)
Answer: look at the image for the answer and the solution
Step-by-step explanation:
Answer: 18.84
Step-by-step explanation:
because the radius is 3, the diameter is 6. And the circumference is C=pi(d).In this case, C=3.14(6), and 3.14*6=18.84
two systems on two different coordinate planes. system a has a line that goes through points (0, 0) and (2, 1) and a second line that goes through points (0, negative 1) and (2, 0). system b has a line that goes through (0, negative 1) and (1, negative 2) and a second line that goes through points (0, negative 1) and (1, negative 4). Match each system of equations with the correct number of solutions.
There are System A has 0 solutions and System B has 1 solution.
What is the solution to the equation?A solution to an equation is a number that can be substituted for the variable to provide a true number statement.
System A:
Line 1: y = (1/2)x
Line 2: y = (1/2)x - 1
System B:
Line 1: y = -x - 1
Line 2: y = -2x - 1
Using these equations, we can determine the number of solutions for each system:
System A has two lines that do not intersect (they are parallel), so it has no solutions.
System B has two lines that intersect at a single point, so it has one solution.
Therefore, System A has 0 solutions and System B has 1 solution.
Learn more about the solution to the equation here:
https://brainly.com/question/16038486
#SPJ9
A rectangle i formed by placing two identical quare ide by ide. The area of the rectangle i 288 quared cm. What i the perimeter of one quare?
The perimeter of one square which combined with other to form a rectangle of 288 cm² is 12 cm.
The area of rectangle is given by the formula -
Area = length × width
Now we know that all the sides of square are same. Also, the identical squares have been kept side by side. So, let us represent one dimension of square with b. Thus, length of rectangle will be (b + b)
Length of rectangle = 2b
Width of rectangle will be b. Now, finding the value of b first.
288 = 2b×b
Performing multiplication
2b² = 288
b² = 288/2
Performing division
b² = 144
b = ✓144
Taking square root
b = 12 cm
The perimeter of one square = 2(length + width)
Perimeter of one square = 2 ( 12 + 12)
Perimeter = 2 × 24
Performing multiplication
Perimeter = 48 cm
Thus, perimeter of one square is 48 cm.
Learn more about square -
https://brainly.com/question/25092270
#SPJ4
5-121. For parts (a) and (b), rewrite the expression without parentheses. For (c) and (d), solve each equation.
a. 2x(x + 3)
b. (3x + 2)(x-3)
c. 4y -2(6-y) = 6
d. x(2x-4)= (2x + 1)(x-2)
The value of the expressions are;
a. 2x² + 6
b. 3x² - 6x + 2x -6
c. y = 3
d. x = 2
How to solve the expressionsFrom the information given, we have
a. 2x(x + 3)
expand the bracket
2x² + 6
b. (3x + 2)(x-3)
expand the bracket
3x² - 6x + 2x -6
c. 4y -2(6-y) = 6
expand the bracket
4y - 12 + 2y = 6
collect like terms
6y = 18
Then,
y = 3
d. x(2x-4)= (2x + 1)(x-2)
expand bracket
2x² - 4x = 2x² - 4x + x - 2
collect like terms
x = 2
Learn about algebraic expressions at: https://brainly.com/question/4344214
#SPJ1
HELP !
Which equation is equivalent to 4 x = t + 2???
s = t minus 2
s = StartFraction 4 Over t + 2 EndFraction
s = StartFraction t + 2 Over 4 EndFraction
s = t + 6
The solution is, x= StartFraction t Over 4 + 2 EndFraction, is equivalent to 4 x = t + 2.
What is equation?An equation can be stated a mathematical statement that is made up of two expressions connected by an equal sign. In its normal form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.
here, we have,
given that,
4 x = t + 2
or, x = (t + 2) /4
or, x = t/4 + 2/4
or, x = t/4 + 2
Hence, The solution is, x= StartFraction t Over 4 + 2 EndFraction, is equivalent to 4 x = t + 2.
To learn more on equation click:
https://brainly.com/question/24372416
#SPJ9
you could measure arrival delay by recording the amount of time between actual arrival time and scheduled arrival time (with positive numbers representing delays and negative numbers representing early arrivals). is this variable categorical or quantitative? if the variable is quantitative, classify it as discrete or continuous.
It is a continuous variable, as it can take on any value within a certain range (i.e., any value between a positive delay and a negative early arrival).
The variable described is quantitative, as it represents a numerical measurement of time, which is a continuous variable that can take on any value within a certain range. The range includes both positive values, representing delays, and negative values, representing early arrivals. This variable is a useful metric for tracking the performance of transportation systems or airlines, as it provides an objective measure of the amount of time a flight is delayed or arrives early. By analyzing the distribution of arrival delay times, policymakers and transportation providers can identify patterns, trends, and potential areas for improvement in their service delivery.
Learn more about continuous variables here: brainly.com/question/22098213
#SPJ4
help please asasp tyyyyyyyyyyyy
Answer:
One pecan cheesecake = $9
One apple cheesecake = $20
Step-by-step explanation:
This is a system of equations problem, so we can set up these equations (Note: p = pecan cheesecake cost | a = apple cheesecake cost):
8p + 12a = 312
9p + 6a = 201
Now, we can solve the system of equations. Below is an example of using the elimination method to solve the system:
1. 8p + 12a = 312 --> -4p - 6a = -156
9p + 6a = 201 --> 9p + 6a = 201
2. 5p = 45
3. p = 9
4. 8(9) + 12a = 312
72 + 12a = 312
12a = 240
a = 20
1. We try to make one of the terms equal to the negative version of the other term to eliminate that term; here, I am eliminating "a". To do this, find a multiple of one of the equations where one of the terms is the negative version of the other term. In other words, divide/multiply the equation by a number so one of the terms in the equation is the negative version of the term in the other equation (I divided the first equation by -2 so 12a becomes -6a, the negative version of 6a in the second equation.
2. Next, add the two equations' corresponding terms
(-4p + 9p = 5p; -6a + 6a = 0; -156 + 201 = 45)
3. Simplify the equation (5p = 45; p = 45/5; p = 9)
4. Substitute the term you found back into one of the equations to find the other term.
The class figured out that if the percent increase is 99% from the beginning of the year, the class will have enough money for every student to go on the field trip. How much money will the class need to raise for every student to go
Answer:
Step-by-step explanation:Class Trip Fund Calculation
The class figured out that if the percent increase is 99% from the beginning of the year, the class will have enough money for every student to go on the field trip. How much money will the class need to raise for every student to go
To calculate the amount of money that the class needs to raise, you can use the formula for calculating the amount after a percent increase:
amount = original amount + (original amount * percent increase / 100)
Let's assume that the original amount is x. After a 99% increase, the new amount will be:
x + (x * 99 / 100) = x * 199 / 100
So, to find the original amount, you can set up an equation:
x * 199 / 100 = amount needed for the field trip
And then solve for x:
x = amount needed for the field trip * 100 / 199
So, the class needs to raise an amount equal to the amount needed for the field trip * 100 / 199 to have enough money for every student to go on the field trip.
