write 2x X(5y-y)/2 in a simplified form

Answer:

5:2 5 to 25/2

Step-by-step explanation:

Answer:

The answer would be either 5/2, 2.5, and 2 1/2

Step-by-step explanation:

Answer:

480 pennies after 2000

Answer:

480

Step-by-step explanation:

25% of the pennies are dated before 1980.

35% are dated from 1980 to 2000, so also before 2000.

Total percent of pennies dated before 2000:

25% + 35% = 60%

100% - 60% = 40%

Percent of pennies dated after 2000: 40%

40% of 1,200 = 40% × 1,200 = 0.4 × 1,200 = 480

Answer: 480

Answer:

below

Step-by-step explanation:

5) closed dot on -2 with the arrow going to towards the right

6) closed dot on -4 with the arrow going towards the right

7) open dot on -1/2 with the arrow going towards the right

8) open dot on 0.3 with the arrow going towards the left

9) x (is less than or equal to) 5 (sorry can't type the symbol but it's this symbol < with a line under it)

10) x > 4

Answer: 2

Step-by-step explanation: if you use a calculator or you could use paper and pencil write out the expression and you should get 2

Answer: The range of the function is all real numbers less than or equal to 9.

Step-by-step explanation:

Recall that a parabola represents a quadratic function, which is a polynomial function of degree 2. Then, recall that the domain of any polynomial function must comprise of all real numbers. Hence, the domain of the quadratic function represented by the parabola is all real numbers. So, the first and second statements are false.

Since the parabola opens down, then its vertex (-2,9) is a maximum point. This indicates that the y-coordinate of the uppermost point on the parabola is y=9.

So, the y-coordinates of all points on the parabola must be at most 9, or equivalently are less than or equal to 9. Therefore, the range of the function (i.e. set of y-coordinates of all points on the parabola) is all real numbers less than or equal to 9. This indicates that the third statement is false, while the last statement is true.

Answer:

112.5

\( {ft}^{3} \)

Step-by-step explanation:

\( \frac{5 \times 5}{2} \times 9 = 112.5\)

Answer:

I) 225

2) 225

3) 18000

Step-by-step explanation:

\(\sf{}\)

Answer:

\(a_{n}\) = 2n - 3

Step-by-step explanation:

the nth term of an arithmetic sequence is

\(a_{n}\) = a₁ + d(n - 1)

where a₁ is the first term and d the common difference

given a₁ = - 1 and a₅ = 7 , then

a₁ + 4d = 7 , that is

- 1 + 4d = 7 ( add 1 to both sides )

4d = 8 ( divide both sides by 4 )

d = 2

then

\(a_{n}\) = - 1 + 2(n - 1) = - 1 + 2n - 2 = 2n - 3

\(a_{n}\) = 2n - 3

Suppose that we randomly choose pens from a box that contains yellow and green pens until a yellow pen is obtained. Assume that each selected pen is replaced before the next one is drawn. In order to find the probability of picking up a pen at least three times, we need to use the probability formula.

For this problem, the probability of choosing a yellow pen on the first draw is P(Y) = number of yellow pens / total number of pens = y / (y+g), where y is the number of yellow pens and g is the number of green pens. The probability of not choosing a yellow pen on the first draw is P(NY) = g / (y+g).After selecting a pen, if it is not yellow, we need to select a pen again. The probability of selecting a pen that is not yellow on the second draw is the same as the probability of not selecting a yellow pen on the first draw, that is\(P(NY) = g / (y+g).\)

Therefore,

the probability of choosing a yellow pen on the second draw is P(Y and NY) = \(P(Y) × P(NY) = y × g / (y+g)²\).The probability of not choosing a yellow pen on the first two draws is P(NYY) = P(NY) × P(NY) = g² / (y+g)².To calculate the probability of choosing a yellow pen on the third draw, we need to consider two cases: the pen selected on the first two draws is green, and the pen selected on the first two draws is not green.

Case 1: The pen selected on the first two draws is green. The probability of selecting a yellow pen on the third draw is P(Y and NY and G) =\(P(Y) × P(NY) × P(G) = y × g × (y+g) / (y+g)³.\)

Case 2: The pen selected on the first two draws is not green. The probability of selecting a yellow pen on the third draw is P(Y and NY and NY) = P(Y) × P(NY) × P(NY) = y × g² / (y+g)³.Therefore, the probability of picking up a pen at least three times is P(at least 3) = P(NYY) + P(Y and NY and G) + P(Y and NY and NY) = g² / (y+g)² + y × g × (y+g) / (y+g)³ + y × g² / (y+g)³ = g² / (y+g)² + 2y × g / (y+g)³.

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Answer:

a) The Margin of Error = 0.26

b) The 99% Confidence Interval = ( 2.84, 3.36)

Step-by-step explanation:

a) Margin of Error

The formula for Margin of Error =

z × Standard deviation/√n

From the above question

The z score for 99% confidence interval = 2.576

Standard deviation = 0.72

n = Random number of samples = 50

Margin of Error =

2.576 × 0.72/√50

= 1.85472 /√(50)

= 0.2622970178

Approximately to 2 decimal places = 0.26

b) 99% Confidence Interval

= Mean ± Margin of Error

Mean = 3.1mm

Confidence Interval = 3.1 ± 0.26

3.1 ± 0.26

= 2.84

3.1 + 0.26

= 3.36

The 99% Confidence Interval = ( 2.84, 3.36)

Answer:

Y=16

Step-by-step explanation:

Becasue if you substitute 2 in for x, you get 8 times 2=16

Answer:

y=8 and

x=2

If x=2, then

8x=8*2=16

so therefore , y=8x i.e 16

y=16

SIMPLE AS THAT !!

Step-by-step explanation:

The number of possible passwords is 26^4 * 10^4.

We will make 4 picks from each category (letters and numbers).

We can duplicate them (i.e., pick each character more than once.)

so, for your 4 picks from the letters, you'll have

26 * 26 * 26 * 26 = 26^4 possible selections.

For each of these, you'll have 4 picks from the digits. Similar reasoning, this works out to

10^4 combinations of digits.

This means you'll have 26^4 * 10^4

Possible combinations of 4 letters and 4 digits, and, for each of these, you now need to work out how many unique ways to arrange them.

We will have 8 possible choices for the 1st character, 7 for the second, 6 for the third, etc. This works out to 8!

different orderings for each of your

26^4 * 10^4

The number of possible passwords is 26^4 * 10^4.

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There are 362,880 ways to select 9 players for the starting lineup and a batting order for the 9 starters based on the concept of combinations.

To calculate the number of ways to select 9 players for the starting lineup, we need to consider the combination formula. We have to choose 9 players from a pool of players, and order does not matter. The combination formula is given by:

\(C(n, r) =\frac{n!}{(r!(n - r)!}\)

Where n is the total number of players and r is the number of players we need to select. In this case, n = total number of players available and r = 9.

Assuming there are 15 players available, we can calculate the number of ways to select 9 players:

\(C(15, 9) = \frac{15!}{9!(15 - 9)!} = \frac{15!}{9!6!}\)

To determine the batting order, we need to consider the permutations of the 9 selected players. The permutation formula is given by:

P(n) = n!

Where n is the number of players in the batting order. In this case, n = 9.

P(9) = 9!

Now, to calculate the total number of ways to select 9 players for the starting lineup and a batting order, we multiply the combinations and permutations:

Total ways = C(15, 9) * P(9)

          = (15! / (9!6!)) * 9!

After simplification, we get:

Total ways = 362,880

There are 362,880 ways to select 9 players for the starting lineup and a batting order for the 9 starters. This calculation takes into account the combination of selecting 9 players from a pool of 15 and the permutation of arranging the 9 selected players in the batting order.

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The given statement that allocation is a mathematical procedure that cannot be manipulated by the parties involved in making the allocation is true.

The term allocation refers to the process of dividing something among various parties. The term is often used in finance and economics to refer to the distribution of goods or resources among various groups or individuals.

Mathematical allocation refers to the distribution of a finite amount of resources among several competing individuals, groups, or companies. This is typically done with the help of mathematical techniques that are based on algorithms and statistical models.

An example of mathematical allocation can be seen in the allocation of financial resources in a company.In mathematical allocation, the parties involved in making the allocation cannot manipulate the process. This means that the allocation is done in a fair and impartial manner, without any interference from the parties involved. This helps to ensure that the allocation is done in an objective and unbiased way, which is important for maintaining the integrity of the allocation process.

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Answer:

y= 0x

Step-by-step explanation:

Answer:

y=0x

Step-by-step explanation:

The mode speed is the value that appears most frequently in the given data set. In this case, the data set is the top 14 speeds for pro-stock drag racing over the past two decades.

To find the mode speed, we need to determine which speed appears most often in the list.

Here are the top 14 speeds in miles per hour for pro-stock drag racing over the past two decades:

- 212
- 211
- 210
- 209
- 208
- 207
- 206
- 205
- 204
- 203
- 202
- 201
- 200
- 199

As we can see, no speed appears more than once in the list. Therefore, there is no mode speed. A data set can have multiple modes if there are two or more values that appear with the same frequency, but in this case, there are no repeated values in the list.

In conclusion, the answer is: There is no mode speed in the given data set.

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Answer:

x = -1, y = -1 and x = \(\frac{1}{2}\) , y = 2

Step-by-step explanation:

To find the solution of the system of equations from their graphs find the intersection points between the two graphs, they are the solution of the system

In the given figure

∵ f(x) = 2x + 1

∴ It is represented graphically by a line

∵ g(x) = \(\frac{1}{x}\)

∴ It is represented graphically by two curved lines on 1st and 3rd

   quadrants

∵ The solution of the system of the equations is the points of

   the intersection of the two graphs

∵ The two graphs intersected at points (-1, -1) and (\(\frac{1}{2}\) , 2)

∴ The solution of the system of the equations is (-1, -1) and (\(\frac{1}{2}\) , 2)

∴ x = -1, y = -1 and x = \(\frac{1}{2}\) , y = 2

Answer: 46

Step-by-step explanation:

Just got it on a test so I wanted to help you guys out. Thank you guys in the comment section of the other answer. That one is wrong.

Answer:

62 degrees

Step-by-step explanation:

you need to understand the def.ang.biscectors, it is going to mean if a life bisects another line, the two angles on one side will add up to 180

therefore

180-118=62

A valid study is one that portrays the population being studied and measures what it is supposed to. It must use random sampling and produce expected results to be deemed a reliable source. However, such studies do not necessarily result in a causal relationship between the independent and dependent variables.

The primary goal of any study is to depict the population being investigated in an accurate and unbiased manner. This involves selecting an appropriate sample of the population to study. This is why a study must use random sampling, which means every member of the population has an equal chance of being selected. This helps avoid sample bias, which is when a sample is chosen in a way that it is not representative of the population, leading to incorrect or inaccurate conclusions.

A valid study must measure what it is supposed to, which means that the study should be designed to measure what it claims to measure. For instance, a study on the effects of sleep on memory should use measures that accurately assess memory and sleep. If the study is designed to assess memory but fails to do so, the results will be unreliable. Finally, a valid study verifies expected results.

This means that the study should produce results that are consistent with what is expected based on prior research or theory. However, this does not mean that a study necessarily results in a causal relationship between the independent and dependent variables. Rather, such a relationship can only be inferred if the study is well-designed and the results are properly analyzed and interpreted.

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Answer:

5

Step-by-step explanation:

As we can see they are similar triangles then

the ratio of the corresponding sides are equal then

x /25 = 9/45

x = 25 * 1/ 5

x = 5

Hope it will help :)

Answer:

Part C

Step-by-step explanation:

Answer:

hey hi will you join zo om

The correct answer is log4. The given statement is 10^4 = 10,000. To find the value equal to 4, we need to look for the logarithm with a base of 10 that results in 4.

In this case, the correct answer is log10,000 because log10(10,000) = 4. This is because log is the inverse operation of exponentiation. In other words, log4 is asking the question "what power do I need to raise 10 to in order to get 4?"

We know that 104 is equal to 10,000, so we can rewrite the question as "what power do I need to raise 10 to in order to get 10,000?" The answer is 4, since 10 to the power of 4 is 10,000. Therefore, log10,000 is equal to 4.

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For an Arithmetic sequence of numbers with sum of three consecutive terms is equals to the 6 and sum of their cubes is 132 are equal to either -1, 2, 5 or 5,2, -1.

An arithmetic sequence is a sequence of numbers such that the difference from any succeeding term to its preceding is equals to a constant number say d. It is also known as an arithmetic progression. We have sum of three consecutive terms in an arithmetic sequence is equals to 6 and the sum of their cubes is 132. Let the three consecutive terms in an arithmetic sequence be \(a_1, a_2, a_3\). So, \(a_1 + a_2 + a_3 = 6 \) -----(1) and a₁³ + a₂³ + a₃³ = 132 ------(2)

We have to determine the three numbers. Now, \(a_1 = a \), \(a_2 = a + d\), \(a_3 = a + 2d \).

Substitute all values in equation(1), a + a + d + a + 2d = 6

=> 3a + 3d = 6

=> a + d = 2

=> a = 2 - d ----(3)

From (3), (2 - d)³ + ( 2 -d +d)³ + (2 - d + 2d)³ = 132

=> (2 - d)³ + 2³ + ( 2 + d)³ = 132

=> 2³ - d³ - 3× 2²d + 6d² + 2³ + 2³ + d³ + 3× 2²d + 6d² = 132

=> 3× 2³ + 2×6d² = 132

=> 12d² + 24 = 132

=> 12d² = 108

=> d² = 9

=> d = ± 3

so, either a = 2 - 3 = -1 , ( d = 3) or a = 2 + 3 = 5 (d = -3)

Hence, required value either -1, 2, 5 or 5,2, -1.

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Answer:

$18

Step-by-step explanation:

90 x 1/5

90/5

18

Answer:

$22.50

Step-by-step explanation

90 is 80% (4/5) of what number (x)? So you do 90 times 100 = 9000 and 80 times x is 80x and then 9000 divided by 80 is 112.5 so she had 112.5 to begin with but she spent 1/5 so 112.5 divided by 5 is 22.5 so 1 fifth is 22.5

Answer:

65  

Step-by-step explanation:

45, 50, 52, 58, 62, 68, 72, 78, 81, 95  

62 + 68 = 130/2 = 65  

The median is 65

The median of the weight of the male dogs is M = 65 lb

The median is the value that's exactly in the middle of a data set when it is ordered. It's a measure of central tendency that separates the lowest 50% from the highest 50% of values. The steps for finding the median differ depending on whether you have an odd or an even number of data points

Arrange the data points from smallest to largest.

If the number of data points is odd, the median is the middle data point in the list.

If the number of data points is even, the median is the average of the two middle data points in the list.

Given data ,

Let the weights of the male dogs be represented as set A

where the value of A is

Set A = { 45, 50, 52, 58, 62, 68, 72, 78, 81, 95 }

On simplifying , we get

The number of terms = 10

So , the median M = ( 62 + 68 ) / 2

The median M = 130/2 = 65 lb

where the mean is C = 66.1 lb

Hence , the median is M = 65 lb

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Answer:

5 m/s

Step-by-step explanation:

1. 3² + 4² = 25

2. √25 = 5

It will take Joe 5 hours to reach Chicago.

To calculate the time it will take for Joe to reach Chicago, we can use the formula:

Time = Distance / Rate

Given that Joe drives 325 miles at a constant rate of 65 mph, we can plug these values into the formula:

Time = 325 miles / 65 mph = 5 hours

The correct answer is:

C) 5 hrs.

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Using the concept of ratio and proportion, the vendor sold 56 cups of hot cider.

The word "proportion" often denotes a portion, share, or sum that is in comparison to a whole. Two ratios are in proportion when they are equal, according to the proportional idea. When an equation or a statement to that effect is used, two ratios or fractions are equal.

A percentage is a mathematical comparison of two numbers. In terms of proportion, two sets of given numbers are said to rise or decrease in the same ratio if they are directly proportionate to one another.

Cider supplied by the street seller for value = x for 35

= x/35

The cider's ratio is 8:5,

x/35 :: 8:5,

x = [35(8)]/ 5

=56.

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