Answer:
D
Step-by-step explanation:
A)
3(2) + 4(-2) = -2 2(2)-4(-2) = -8
6 - 8 = -2 4 + 8 = -8
Correct Incorrect
B)
3(6) + 4(-5) = -2 2(6) - 4(-5) = -8
18 - 20 = -2 12 + 20 = -8
Correct incorrect
C)
3(4) + 4(4) = -2
12 + 8 = -2
incorrect
D)
3(-2) + 4(1) =-2 2(-2) - 4(1) = -8
-6 + 4 = -2 -4 - 4 = -8
Correct Correct
Best way is process of elimination
Write the algebraic expression (ex. 2x - 5) for this problem:
The quotient of a number and 8
Answer:
x/8
Step-by-step explanation:
Need some help solving for X.
Answer:
4
Step-by-step explanation:
define a method computeval() that takes one integer parameter and returns the parameter plus 7. ex: if the input is 3, then the output is: 10
To define a method computeval() that takes one integer parameter and returns the parameter plus 7, you can use the following code:
For example, if the input is 3, the output is 10:
5. Draw the arrow diagram and the matrix representation for the following relation on the set (1, 2, 3, 4): R = { (1,3), (1,4), (2,1), (3,2), (3,4), (4,2)).
The relation R on the set (1, 2, 3, 4) can be represented by an arrow diagram and a matrix. The arrow diagram visually depicts the connections between the elements.
To represent the relation R on the set (1, 2, 3, 4) using an arrow diagram, we draw a directed arrow from each element in the set to the element it is related to. For example, we draw an arrow from 1 to 3 and 4, an arrow from 2 to 1, an arrow from 3 to 2 and 4, and an arrow from 4 to 2. The resulting arrow diagram shows the connections between the elements in the relation.
The matrix representation of a relation uses a table to show the presence or absence of connections between elements. For the relation R on the set (1, 2, 3, 4), we create a 4x4 matrix where the rows and columns correspond to the elements of the set. We fill in the matrix with 1s to indicate that there is a connection between the respective elements and 0s otherwise. In this case, the matrix would be:
| 0 0 1 1 |
| 1 0 0 0 |
| 0 1 0 1 |
| 0 1 0 0 |
In the matrix, a 1 in the i-th row and j-th column indicates that the element i is related to the element j. For example, the entry in the first row and third column is 1, indicating that 1 is related to 3.
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Jan and Wayne went to the store to buy some groceries. Jan bought 2 cans of corn beef hash and 3 cans of creamed chipped beef for $4.95. Wayne bought 3 cans of corn beef hash and 2 cans of creamed chipped beef for $5.45.
Answer:
Corn Beef = x
Creamed Chipped beef = y
Jan:
2x + 3y = 4.95
Wayne:
3x +2y = 5.95
Graph two equation and find the point where two lines cross and that will be solution.
Point where two lines cross: (1.29, 0.79)
Corn Beef = $1.29
Creamed Chipped Beef = $0.79
Step-by-step explanation:
find the value of x in the given right triangle
Answer: 10.6
Step-by-step explanation:
\(\sin 62^{\circ}=\frac{x}{12}\\x=12 \sin 62^{\circ} \approx \boxed{10.6}\)
what is the mode and median of 1,2,1,3,3,5,3,4,5,4,3,2,5,3,1.
hope it helps uh ....!!!!
a pizza parlor offers a choice of 1010 different toppings. how many different 33-topping pizzas are there?
The permutation combination is 120 for 3 different topping pizzas are available.
Permutation Combination:
A variety of ways to select objects from a set, usually forming a subset without replacement. The selection of this subset is called a permutation if the order of selection is a factor, and a combination if the order is not a factor. The French mathematicians Blaise Pascal and Pierre de Fermat, in the 17th century, used many chances in his game of combinatorics and probability by considering the ratio of the number of required subsets to the number of all possible subsets stimulated the development of the theory.
The concepts of permutations and combinations and their differences can be illustrated by examining all the different ways of selecting pairs of objects from five identifiable objects such as the letters A, B, C, D and E.
According to the Question:
Given that :
Number of different toppings = 10
Number of Pizzas = 03
therefore,
The permutation combination are :
= 10!/7! 3!
= 15 × 8
= 120.
Therefore, there are 120 different combinations of toppings.
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I am so confused, what do I need to do here?
The radian measure of Angle E should be labeled π/3 or 60 degrees, and F should be labeled 2(π/3) or 120 degrees.
How do we identify the radian measures of each angle?A full circle in radian measures is 2π and half π
If we divide π into 3 equal parts it should be π/3 radian.
Angle EAP would be π/3 radians because E is one-third of the way from A to P.
In degrees, π/3 radians is equal to (180/π) × π/3 = 60°
Angle FAP would be 2×(π/3) radians givn that F is 2/3 of the way from A to P.
In degrees, 2×(π/3) radians is equal to (180/π) × 2(π/3) = 120°.
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A student rewrites the expression 12⋅16−s as another equivalent expression. Which expression could the student write?
Equivalent Expression tool that displays the equivalent expressions for the given algebraic expression.
What is algebraic expression?Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.These expressions are represented with the help of unknown variables, constants and coefficients. The combination of these three (as terms) is said to be an expression.To learn more about coefficient refer to:
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The coefficient of determination rsquared is the ratio of which two types of variations? What does rsquared measure? What does 1minus rsquared measure? The coeffcient of determination is the ratio of the explained variation to the total variation.A. The coefficient of determination is the ratio of the unexplained variation to the total variation. B. The coefficient of determination is the ratio of the total variation to the unexplained variation. C. The coefficient of determination is the ratio of the explained variation to the total variation. D. The coefficient of determination is the ratio of the total variation to the explained variation.
The coefficient of determination R - squared is the ratio is option (c) The coefficient of determination is the ratio of the explained variation to the total variation and a correct option is (c).
Mathematically, R-squared is calculated as the ratio of the sum of squares of the regression (SSR) to the total sum of squares (SST).
SSR represents the variation in the dependent variable that is explained by the independent variable(s), while SST represents the total variation in the dependent variable.
One minus R-squared (1-R-squared) is equal to the ratio of the sum of squares of the residual (SSE) to the total sum of squares (SST).
SSE represents the variation in the dependent variable that is not explained by the independent variable(s) used in the regression equation.
Therefore, 1-R-squared represents the proportion of the total variation in the dependent variable that is not explained by the independent variable(s) used in the regression equation.
Hence the correct option is (c).
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If the hcf of 65 and 117 is expressible in the form of 65 m-117,the the value of m is
If the HCF of 65 and 117 is expressible in the form of 65 m-117, then the value of m is 2.
To find the value of m, follow these steps:
Since the HCF (65, 117) = 13 and the HCF (65, 117) = 65m - 117, then we can say that 65m - 117= 13.Solving the equation, we get 65m= 130 ⇒m= 130/65= 2.Therefore, the value of m is 2.
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You can wash one window in 15 minutes and your sister can wash one window in 20 minutes how many minutes will it take to wash 12 windows if you workl together?
The number of minutes required to wash 12 windows is 8 4/7 minutes.
According to the given question.
You can wash one window in 15 minutes, so each minute you can wash 1/15.
Your sister can wash one window in 20 minutes, so each minute the sister can wash 1/20.
If working together you can wash 1/15 + 1/20 = 7/60.
Hence, the time required to wash 12 windows together
= 12 × 7/60
= 8 4/7 minutes.
Therefore, the number of minutes required to wash 12 windows is 8 4/7 minutes.
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(3) a certain community ccollege would like to obtain information about the likelihood that various categories of students will graduate. data from the school indicate that from one fall term to the next, 40% of the sophomores will graduate, 30% will remain sophomores, and 30% will quit permantly. for freshmen, 10% will graduate by next fall, 50% will become sophomores, 20% will remain freshmen, and 20% will quit per- mantly. during the
To analyze the likelihood of various categories of students graduating, we can construct a transition matrix based on the given information. The transition matrix represents the probabilities of moving from one category to another. In this case, we have two categories: freshmen and sophomores.
Let's denote the transition matrix as follows:
r
Copy code
P = [ F → F F → S S → F S → S ]
where:
F → F represents the probability of freshmen remaining freshmen
F → S represents the probability of freshmen becoming sophomores
S → F represents the probability of sophomores becoming freshmen
S → S represents the probability of sophomores remaining sophomores
Based on the information provided, we can construct the transition matrix as follows:
css
Copy code
P = [ 0.20 0.50 0.10 0.20 ]
To analyze the likelihood of students graduating, we can raise this transition matrix to a power representing the number of terms (or years) in the future. For example, to analyze the likelihood of students graduating after 2 years, we can compute P^2.
To find the percentage of students graduating after a certain number of years, we can examine the corresponding entry in the transition matrix raised to that power.
For example, if we want to find the percentage of students who will graduate after 2 years, we can compute (P^2)[i, j], where i represents the row index corresponding to freshmen and j represents the column index corresponding to graduates.
Let's denote the transition matrix raised to the power of n as P^n.
To find the likelihood of various categories of students graduating after n terms, we can compute (P^n)[i, j] for each category and the desired outcome.
Note: The percentages provided in the question (40%, 30%, etc.) can be used as initial values for the transition matrix. However, it's important to confirm if the percentages provided represent the initial distribution of students or the transition probabilities.
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I WILL MARK YOU BRANLIEST IF YOU ANSWER THIS QUESTION
The two right rectangular prisms below have different volumes.
What is the difference in volume, in cubic feet, of the two prisms?
Answer:
Step-by-step explanation:
In a recent election, 63% of all registered voters participated in voting. In a survey of 275 retired voters, 162 participated in voting. Which is higher, the population proportion who participated or the sample proportion from this survey?
The population proportion who participated in voting (63%) is higher than the sample proportion from this survey (58.91%).
To determine whether the population proportion who participated in voting or the sample proportion from the survey is higher, we need to compare the percentages.
The population proportion who participated in voting is given as 63% of all registered voters.
This means that out of every 100 registered voters, 63 participated in voting.
In the survey of retired voters, 162 out of 275 participants voted. To calculate the sample proportion, we divide the number of retired voters who participated (162) by the total number of retired voters in the sample (275) and multiply by 100 to get a percentage.
Sample proportion = (162 / 275) \(\times\) 100 ≈ 58.91%, .
Comparing the population proportion (63%) with the sample proportion (58.91%), we can see that the population proportion who participated in voting (63%) is higher than the sample proportion from this survey (58.91%).
Therefore, based on the given data, the population proportion who participated in voting is higher than the sample proportion from this survey.
It's important to note that the sample proportion is an estimate based on the surveyed retired voters and may not perfectly represent the entire population of registered voters.
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Please help! I will give Brainliest!
Answer:
Option. A
Step-by-step explanation:
Have a great day!
Answer: A
Step-by-step explanation: there's 8 spaces on the spinner
What is the value of the expression 2^2 + 8^2 ÷ 2^2?
1 point)
8
10
17
20
Answer:
Fourth option
Step-by-step explanation:
Given the following question:
\(2^2+8^2\div2^2\)
To find the answer we need to convert the exponents into integers and then solve using PEMDAS.
\(2^2+8^2\div2^2\)
\(2^2=2\times2=4\)
\(8^2=8\times8=64\)
\(2^2=2\times2=4\)
\(4+64\div4\)
\(64\div4=16\)
\(4+16\)
\(4+16=20\)
\(=20\)
Your answer is "20" or the fourth option.
Hope this helps.
what is the proportional realashionship
Answer: "Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality"."
Step-by-step explanation: I got this from a website. Hope it works!!!
find the measure of each angle if C D
Answer:
1=72 , 2=108 , 3= 72 , 4=108
Step-by-step explanation:
c parallel to d means that 108 and 1 are adjacent angles , sum 180
therefore ang 1 = 180-108=72
2=108, corresponding angles,
same as above for 3, angle 3= 180-108 =72
2 and 4 are vertically opposite and are equal.
Help me, it will mean a lot if u do :)
Answer: 57 degrees
Step-by-step explanation:
Angle ZXY = Angle YZV = 75 degrees (Alternate segment theorem)
Since angles on a straight line add upto 180 degrees:
Angle UZX = 180 - ( 75 + 48) = 57 degrees
Note: 75 is Angle YZV and 48 is Angle XZY
PLEASE HELP TGA DUE
1. A local pizzeria sold 85 pizzas yesterday. The owner offers the employees a bonus if the number of pizzas sold increases by 20% today. How many TOTAL pizzas must the pizzeria sell for employees to receive the bonus. (2 Points)
_____________TOTAL PIZZAS
(Explain your reasoning and show your work).
2. The pizzeria sold 85 pizzas yesterday. Suppose the number of pizzas sold today was 60. Determine the percent increase or decrease in the pizzas sold, rounded to the nearest hundredth. (2 Points) Show your work below.
_____________ % (increase or decrease)
DO ALL STEPS AND SHOW ALL OF YOUR WORK PLEASE FOR FULL CREDIT, CORRECT WILL GET BRAINLIEST
Answer:65 + 0.20(65) = 65 + 13 = 78..they would have to sell 78 to get the bonus(65 - 60) / 65 = 5/65 = 0.0769 x 100 = 7.69 rounds to 7.7 % decrease compared to the 65 pizza's sold yesterday
Step-by-step explanation:
THIS IS THE 3.1.4 JOURNAL PROVING THE PYTHAGOREAN THEOREM ASSIGNMENT FULL ASSIGNMENT ANSWERS!!!
Determine if the TV will fit in the car.
a. Draw the rectangle that represents the height and width of the trunk including the diagonal. Label the dimensions on your sketch.
Answer:
Step-by-step explanation:
The dimensions of the rectangle are:
Height = 40 cm
Width = 30 cm
Diagonal = 50 cm
The sketch is given below.
What is the Pythagorean theorem?Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.
We have,
A rectangle with a height of 40 cm and a width of 30 cm is drawn.
Now,
The diagonal of the rectangle can be calculated using the Pythagorean theorem.
So,
Diagonal side = x
x² = 30² + 40²
x² = 900 + 1600
x² = 2500
x = 50 cm
Thus,
Rectangle:
Height = 40 cm
Width = 30 cm
Diagonal = 50 cm
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5) Pet Supplies makes a profit of $5.50 per bag on its line of natural dog food. If the store w
profit of no less than $5225, how many bags of dog food does it need to sell?
is {(2, –2), (1, 5), (–2, 2), (1, –3), (8, –1)} a function
Answer:
No
Step-by-step explanation:
The set contains 2 different ranges for 1 domain. In this case, X = 1 returns 5 and -3, meaning it cannot be a function.
SOLVE FOR X
2x+15=2x-15
\(\\ \rm\Rrightarrow 2x+15=2x-15\)
\(\\ \rm\Rrightarrow 2x-2x=-15-15\)
\(\\ \rm\Rrightarrow 0=-30\)
Hence
\(\\ \rm\Rrightarrow x=\infty\)
What is the answer to this question −11+4x≤ 17
Linear inquality : −11+4x≤ 17
Adding 11 on both sides
=> -11 + 4x + 11 < 17 + 11
=> 4x < 28
Dividing both sides by 4
=> 4x/4 < 28/4
=> x < 7
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). these factors are reflected in the data, hai prevalence in those over the age of 85 is 11.5%. this is much higher than the 7.4% seen in patients under the age of 65.
The data shows that the prevalence of hai (healthcare-associated infections) is higher in individuals over the age of 85 compared to those under the age of 65.
The prevalence rate for hai in individuals over 85 is 11.5%, while it is 7.4% in patients under 65. This indicates that age is a factor that influences the occurrence of hai. The data reflects that the prevalence of healthcare-associated infections (hai) is significantly higher in individuals over the age of 85 compared to patients under the age of 65. Specifically, the prevalence rate for hai in individuals over 85 is 11.5%, while it is 7.4% in patients under 65. This difference suggests that age plays a significant role in the occurrence of hai. Older individuals may have weakened immune systems and are more susceptible to infections. Additionally, factors such as longer hospital stays, multiple comorbidities, and exposure to invasive procedures can contribute to the higher prevalence of hai in this age group. The higher prevalence rate in patients over 85 implies a need for targeted infection prevention and control measures in healthcare settings to minimize the risk of hai among this vulnerable population.
In conclusion, the data indicates that the prevalence of healthcare-associated infections (hai) is higher in individuals over the age of 85 compared to those under the age of 65. Age is a significant factor that influences the occurrence of hai, with a prevalence rate of 11.5% in individuals over 85 and 7.4% in patients under 65. This difference can be attributed to factors such as weakened immune systems, longer hospital stays, multiple comorbidities, and exposure to invasive procedures in older individuals. To mitigate the risk of hai in this vulnerable population, targeted infection prevention and control measures should be implemented in healthcare settings.
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the scores on a standardized test are normally distributed with a mean of 90 and standard deviation of 15. what test score is 0.1 standard deviations above the mean?
The test score is 91.5.
z-score:
A z-score is the number of standard deviations from the mean value of the reference population.
Here we have to find the test score.
Mean(μ) = 90
Standard deviation(б) = 15
z-score = 0.1
Formula for z-score:
z = X - μ / б
Now putting the values in the equation:
0.1 = X - 90 / 15
1.5 = X - 90
X = 91.5
Therefore the test score is 91.5.
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