Help---I dont understand!! :(

Answer:

1.8,000, 10 000, 11 000

2. 23 675, 23 756, 23 890

3. 67 234, 78 123, 87 234

B.

4. 14 987,14 789, 14 123

5. 70 900,70 345,70 009

Answer:

A. Arrange in increasing order.

1. 11000, 10000, 8000

= 8000 < 10000 < 11000

2. 23675, 23756, 23890

= 23675 < 23756 < 23890

3. 78123, 67234, 87234

= 67234 < 78123 < 87234

B. Arrange in decreasing order.

4. 14789, 14987, 14123

= 14987 > 14789 > 14123

5. 70345, 70900, 70009

= 70900 > 70345 > 70009

Answer:

the answer is B

Step-by-step explanation:

The mean will move towards the outlier.

In statistics, in addition to the mode and median, the mean is one of the measures of central tendency. Simply put, the mean is the average of the values in the given set. It indicates that values in a particular data set are distributed equally. The three most frequently employed measures of central tendency are the mean, median, and mode. The total values provided in a datasheet must be added, and the sum must be divided by the total number of values in order to determine the mean.

The mean is non-resistant. That means it's affected by outliers. More specifically, the mean will want to move towards the outlier.

For example,

Let's say we have some data - 1,2,3. The mean of this data is 2.  But if we add an outlier of 94 to the data set, the mean will become 25. As you can see, the mean moved towards the outlier.

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Answer:

all of the above

Step-by-step explanation:

Answer:

26%

Step-by-step explanation:

13/50=0.26

0.26x100=26%

So the different number has a 4 with a value of 40.

What is Algebraic expression ?

Algebraic expression can be defined as combination of variables and constants.

To solve this problem, we need to first identify the place value of the digit 4 in the given number.

The digit 4 is in the hundreds place in the number 431.67, so its value is 4 x 100 = 400.

According to the problem statement, the 4 in the different number represents a value which is one-tenth of the value of the 4 in 431.67. Therefore, the value of the 4 in the different number is:

400/10 = 40

To determine the value of the different number, we need to look at the other digits in the number. Since we don't have any information about the other digits, we cannot determine the value of the different number. The answer is that the value of the different number cannot be determined with the information given.

Therefore, So the different number has a 4 with a value of 40.

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Answer:

60%

Step-by-step explanation: THeres 30 students, 40% are measuring so that leaves 60% not measuring because in order to have 100% students you'll need 60 to add to the current 40% of students already doing the measuring.

Answer:

The correct option would be D. 60%

Step-by-step explanation:

This is because if only 40% percent of the students are measuring the chemicals then, out of 100%, 60% of students are not measuring chemicals.

Hope this helps!

The probability that a student chosen randomly from the class

passed the test and completed the homework is  \(\frac{1}{2}\).

"Probability denotes the possibility of the outcome of any random event. The meaning of this term is to check the extent to which any event is likely to happen."

Given

Number of students in a math class = 20

Number of students who passed the test = 12

Number of students who completed the assignment = 13

Number of students who passed the test and also completed the

assignment = 10

Formula to find probability of an event

Probability = \(\frac{Number of Favorable Outcomes}{Total Number of Favorable Outcomes}\)

The probability that a student chosen randomly from the class

passed the test and completed the homework

= \(\frac{Number of Students Passed the Test and Completed the Homework }{Total Number of Students}\)

= \(\frac{10}{20}\)

= \(\frac{1}{2}\)

Hence, the probability that a student chosen randomly from the class

passed the test and completed the homework is  \(\frac{1}{2}\).

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Answer:

Step-by-step explanation:

To find the number of yard, divide the number of feet by the unit rate 3 feet per yard.

Answer:The amount of a 80% acid solution that must be mixed with a 55% solution to produce 600 mL of a 60% solution can be calculated using a simple algebraic equation. Let x represent the amount of the 80% acid solution in mL that needs to be mixed with the 55% solution.

The equation can be set up as follows:

0.80x + 0.55(600 - x) = 0.60(600)

Step-by-step explanation: The left-hand side of the equation represents the total amount of acid in the mixture. The first term, 0.80x, represents the amount of acid from the 80% solution, and the second term, 0.55(600 - x), represents the amount of acid from the 55% solution. The right-hand side of the equation represents the total amount of acid in the final 60% solution, which is 60% of 600 mL.

By solving this equation for x, we can determine the amount of the 80% acid solution that needs to be mixed with the 55% solution. Once we have the value of x, we can then calculate the amount of the 55% solution by subtracting x from 600 mL.

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Let x=amount of 80% solution needed

Then 600-x=amount of 30% solution needed

Now we know that the pure acid in the 80% solution (0.80x) plus the amount of pure acid in the 30% solution ((0.30)(600-x)) has to equal the amount of pure acid in the final mixture(0.40*600), so our equation to solve is:

0.80x+0.30(600-x)=0.40*600 get rid of parens

0.80x+180-0.30x=240 subtract 180 from each side

0.80x+180-180-0.30x=240-180 collect like terms

0.50x=60 divide each side by 0.50

x=120 ml---------------------amount of 80% solution needed

600-x=600-120=480 ml---------------amount of 30% solution needed

CK

120*0.80+480*0.30=0.40*600

96+144=240

240=240

Answer:

50

Step-by-step explanation:

Complementary angles mean that the sum of the angles given is 90°. Therefore, as G and H are complementary, this means that G+H=90

G+H=90

(2x+10) + (x+20) = 90

Add values on left side

3x+30=90

Subtract 30 from both sides

3x=60

Divide both sides by 3

x=20

Since we now know the value of x, we can plug that in to G (2x+10) to get 2(20)+10 = 50 = G

9514 1404 393

Answer:

  216 = 2³·3³ = 8·3³ = 27·2³

Step-by-step explanation:

6³ = 2·2·2·3·3·3

The string of factors can be grouped however you like, and any repeated factors in the group can be expressed using an exponent.

  = 2·2²·3³

  = 8·3³

  = 6·2²·3²

  = 6·6²

  = 27·2³

Answer:

1. 1/2

2. 2/5

3. -1

4. 1/2

Step-by-step explanation:

slope is equal to rise/run

you take two points and count how far up and sideways

if it is down make it negative

The value of x in the absolute value equation |3x + 12| = 0 is -4

From the question, we have the following parameters that can be used in our computation:

|3x + 12| = 0

The above equation is an absolute value equation

So, we start by removing the absolute brackets

So, we have the following representation

3x + 12 = 0

Evaluate the like terms

This gives

3x = -12

Divide both sideso of the equation by 3

x = -4

Hence. the solution is -4

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Anna has $165 left in the jar. The solution has been obtained by using the arithmetic operations.

All real numbers are supposed to be explained by the four fundamental operations, often known as "arithmetic operations." In mathematics, operations like quotient, product, sum, and difference occur after operations like division, multiplication, addition, and subtraction.

We are given that Anna saved $20 in a jar each month for 2 complete years and for 9 months of next year.

So, total months = 9 + 12 + 12 = 33

Now, using the multiplication operation, we get

⇒ Total money saved = 33 * 20

⇒ Total money saved = $660

It is given that she spent 75% of her savings on computer.

So, using the subtraction operation, we get

⇒ Amount left = 660 - 75%

⇒ Amount left = $165

Hence, Anna has $165 left in the jar.

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Answer:

8 : 1

Step-by-step explanation:

24 volts : 3 volts

= 24 : 3

= 24 / 3

= 8

= 8 / 1

= 8 : 1

The ratio of 24 volts to 3 volts 8 : 1.

We have given that,

The ratio of 24 volts to 3 volts

The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

24 volts : 3 volts

= 24 : 3

= 24 / 3

= 8

= 8 / 1

= 8 : 1

Therefore, The ratio of 24 volts to 3 volts 8 : 1.

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The value of the missing part of the triangle such as PR and ST = 8 and 5 respectively

Triangle PQS is congruent with triangle PRS

Therefore, PQ = PR

That is;

PQ = 8

PR = 2x

8 = 2x

X = 8/2 = 4

PR = 2(4) = 8

For ST;

Triangle VST = VUT

That is, TU = ST

ST = 5z

TU = 2z+3

5z = 2z+3

5z+2z = 3

z= 3/3 = 1

ST = 5(1) = 5

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The statement translated to an algebra equation will give the value of the unknown number w = 11/5

Algebra is the branch of mathematics that helps to represent problems or values in the form of mathematical expressions using letters to represent unknown values.

Let us represent the unknown number with the letter w so that the statement can be written as the equation:

5w - 8 = 3

add 8 to both sides

5w - 8 + 8 = 3 + 8

5w = 11

divide through by 5

5w/5 = 11/5

w = 11/5

Therefore, the statement translated to an algebra equation will give the value of the unknown number w = 11/5

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1. The type of function which vest represents the data in the table is; Quadratic.

2. The statement which is true is; The second differences are constant.

3. The type of function which best represents the given table is; Linear equation.

It is evident from the task content that the functions which correctly represents each data table is required to be determined.

By definition, linear functions are functions in which case, the first differences are constant while quadratic functions are functions in which the second differences are constant.

Ultimately, the first data table represents a quadratic function while the second data table represents a linear function.

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The regression line is yˆ = 4 + 1.891x , the coefficient of determination of two variables or the fraction of the variation in y that can be explained by the variation in the values of x is 0.51..

Here the fitted regression equation of y on x is

yˆ = 4 + 1.891x ---(*)

where, x --> Independent variable

yˆ --> predicted value of the dependent variable

Now, b₁ = slope cofficient = 1.891 ~ 1.91

(estimated from least squares method)

We have given that,

Standard deviations for X = 1.34 = sₓ say

Standard deviations for Y = 3.6 = sᵧ say

we know, b₁ = r₀( sₓ/sᵧ ) where ro is corr(X,Y)

=> 1.91 = r₀ (3.6/1.34)

=> 1.91×1.34/ 3.6 = r₀

=> r₀ = 0.71944

Defining, R² = cofficient of determination of two variables = Proportion of variation in Y , explained by the variation in the value of X, through the regression model.

= (r₀)² = (0.71944)² = 0.505442

R² = 0.505442 ~ 0.51 (in two decimals)

Hence, the cofficient of determination is 0.51..

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Complete question:

Using your favorite statistics software package, you generate a scatter plot which displays a linear form. You find a regression equation and the standard deviation for both variables. The standard deviation for x is 1.34 , and the standard deviation for y is 3.6 . The regression equation is reported as y = 4 + 1.891x . What fraction of the variation in y can be explained by the variation in the values of x? (Enter your answer as a decimal between 1 and 2.)

To rewrite the expression -2(n-7) using the distributive property, we need to distribute the -2 to both terms inside the parentheses. The distributive property states that for any numbers a, b, and c:

a(b + c) = ab + ac

Applying this property to the given expression:

-2(n-7) = -2 * n + (-2) * (-7)

Simplifying further:

-2(n-7) = -2n + 14

Therefore, the rewritten expression is -2n + 14.

Answer: To find the product of two rational expressions, we multiply the numerators together to get the new numerator and multiply the denominators together to get the new denominator.

So, (2/x) * (3/2x-5) = (2 * 3) / (x * (2x-5)) = 6 / (2x^2 - 5x)

Step-by-step explanation:

Answer:-1,4

Step-by-step explanation:

Hello!

9xy-5xy=4xy

We can add like terms.

Like terms are same variables. Examples:

x+x

Remember:

x+x^2 can't be simplified.

y+x can't be simplified.

Hope it helps!

~Just a determined teen

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\(MysteriousNature\)

The expression 4xy is added to the equation 5xy to get 9xy​.

A collection of constants, variables connected using one or more arithmetic operator is called an expression

Example = 4y, 3x+4.

Two algebraic expressions separated by an equal symbol in between them and with the same value of the expression are called equations.

Example = 2x +4 = 12

Here, 4 and 12 are constants and x is variable

The equation can be solved as:

Let t be added to the following equation,

5xy + t = 9xy

Subtract 5xy  from both the sides,

t = 9xy​ - 5xy

t = 4xy

Thus, 4xy is added to 5xy to get 9xy.

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Answer:

Mean; 762,143

Median; 800,000

Step-by-step explanation:

Mean;

Add all of the numbers together, then divide by how many there are.

There are seven home prices in total, add them together then divide by 7.

5,335,000 divided by 7 = 762,142.85714285; simplified to 762,143.

Median;

Organize the numbers from least to greatest

455,000, 780,000, 795,000, 800,000, 810,000, 840,000, 855,000

Then find the number in the middle

800,000