What is the value of this expression.

Answer:

[tex]\frac{17}{4}[/tex]

Step-by-step explanation:

Replace y with 3/2 and solve for x

2x + 3(3/2) = 13

2x + 9/2 = 13  Subtract 9/2 from both sides

2x = [tex]\frac{13}{1}[/tex] - [tex]\frac{9}{2}[/tex]

2x = [tex]\frac{26}{2}[/tex] - [tex]\frac{9}{2}[/tex]

2x = [tex]\frac{17}{2}[/tex]  Divide both sides by 2

x = [tex]\frac{17}{2}[/tex] ÷ [tex]\frac{2}{1}[/tex]

x = [tex]\frac{17}{2}[/tex] x [tex]\frac{1}{2}[/tex]

x = [tex]\frac{17}{4}[/tex] o r4 [tex]\frac{1}{4}[/tex] or 4.25

The formula for the Volume(V) of the cylinder is given as,

Given:

Therefore,

Hence, the volume of the cylinder is

The diagonals WY and XZ intersect at E, we must prove that WE ∼ = YE and XE ∼ = ZE. The converse exists also true: If the diagonals of a quadrilateral bisect each other, then the quadrilateral exists as a parallelogram.

WXYZ cannot be a parallelogram because the value of x that creates one pair of sides congruent does not create the other pair of sides congruent.

Given that WXYZ, let the diagonals WY and XZ intersect at E, we must prove that WE ∼ = YE and XE ∼ = ZE. The converse exists also true: If the diagonals of a quadrilateral bisect each other, then the quadrilateral exists as a parallelogram.

A rhombus, therefore, contains all the properties of a parallelogram: Its opposite sides exist parallel. Its opposite angles exist equally. Its diagonals bisect each other.

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The algebraic expression should often take one of the following forms: addition, subtraction, multiplication, or division. Bring the variable to the left and the remaining values to the right to determine the value of x. To determine the outcome, simplify the values.

       x+ 38+103= 180

       x+141 =180

      x =180- 141

      x   =  39

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11. The amount he pays in annual state income tax is $1,497.

13. The amount that will be paid for tax will be $2000.

14. The amount he pays in annual state income tax is $707.50.

11. Given;

Annual earnings = $57,900

State tax rate = 3%

Amount earned in exemption = $8,000

Taxable Income = Annual Income - Exemptions

Igor's taxable income = $57,900 - $8,000 = $49,900

Taxable Income × Tax rate = Amount paid as tax

The amount he pays is therefore; $49,900 × 3% = $1,497

13. The amount that will be paid as tax will be:

= 4.6% × $43500

= $2000

Therefore, the amount is $2000.

12. a) We can see that the exemptions for a married person are $4000 and $2000 per dependent. Since there are 2 dependents, therefore:

Amount for exemptions = $4000 + (2 dependents × $2000 per dependent)

Amount for exemptions = $4000 + $4000 = $8000

Amount for exemptions = $8000

b) Taxable wages = Annual gross pay - Exemptions

Taxable wages = $63840 - $8000 = $55840

Annual state income taxes = Taxable wages × State tax rate

Annual state income taxes = $55840 × 4% = $2233.6

14. The amount he pays in annual state income tax is $707.50.

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Answer:

114 cm^2; x = 6: it is not possible because the lengths of the sides when solved are not the right size. x - 1 is bigger than 2x - 4 in the picture but in reality it is not. it doesnt make sense

Step-by-step explanation:

for the first one the area of a trapezoid is [tex]\frac{1}{2} h(b_{1} +b_{2})[/tex]

so

first find the height of the triangle

8^2 + h^2 = 10^2

64 + h^2 = 100

h^2 = 36

h = 6

so

the height is 6

now plug it in

[tex]\frac{1}{2} * 6 (25 + 13)[/tex]

[tex]\frac{1}{2} * 6(38)[/tex]

114 cm is the first answer

for the second one you can add all of them together and set them equal to 27

x - 1 + 2x - 4 + 3x - 4 = 27

6x - 9 = 27

6x = 36

x = 6

that is the second answer

it is not possible because the lengths of the sides when solved are not the right size. x - 1 is bigger than 2x - 4 in the picture but in reality it is not. it doesnt make sense

37 inches total, but 35 with just December, January, and February (depending on the definition of winter)

The relation which represents a function is the mapping diagram.

A function can be defined as a mathematical expression which is used to define and represent the relationship that exists between two or more variables. This ultimately implies that, a function is typically used for mapping an input variable (x-value) to an output variable (y-value).

In this scenario, the same x-value of the given ordered pairs (3, 2) and (3, 4) have the different output variable (y-value) and as such does not represent a function. Similarly, the table of values has the same x-value (-1) which outputs different numerical values.

Based on the ordered pairs and table shown above, we can reasonably and logically deduce that it is only the mapping diagram that represents a function.

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The probability that a value selected at random from this distribution is greater than 20 is 0.5.

What is a probability with normal distribution?

The majority of the observations are centered around the middle peak of the normal distribution, which is a continuous probability distribution that is symmetrical around its mean. The probabilities for values that are farther from the mean taper off equally in both directions.

Here,

Let us assume that X follows a normal distribution.

If X follows a normal distribution, then

z = (X−μ) /σ, follows a standard normal distribution.

The probability of a value selected at random from this distribution is greater than 20:

P (X > 20) = 1 − P (X ≤ 20)

P ((X − μ) / σ > 20) = 1−P((X − μ) / σ ≤ 20)

P (z > (20 − 20) /5) = 1 − P (z ≤ (20−20 / 5))

P (z > 0) = 1 − P (z ≤ 0)

The value of probability is obtained from the standard normal table as:

P (z > 0) = 1 − P (z ≤ 0)

             = 1 - 0.5

            = 0.5

Hence, the probability that a value selected at random from this distribution is greater than 20 is 0.5.

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Answer:

9 square megameters

Explanation:

Given:

We want to find out how many square megameters are in 9,000,000 square kilometers.

Multiply both sides of the equation by 9,000,000.

There are 9 square megameters in 9,000,000 square kilometers.

The principal amount is $99,055.82.

When you add the interest you have already earned back into your principal balance, you are earning compound interest, which increases your profits. Consider that you have $1,000 in a savings account earning 5% interest annually. If you made $50 in the first year, your new balance would be $1,050.

Given:

Amount = 120,000

r = R/100

r = 2.4/100

r = 0.024 per year,

Then, solve the equation for P

P = A / [tex](1 + r/n)^{nt}[/tex]

P = 120,000.00 /[tex](1 + 0.024/12)^{(12)(8)[/tex]

P = 120,000.00 / [tex](1 + 0.002)^{(96)[/tex]

P = $99,055.82

Hence, the principal amount is $99,055.82.

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0.8973 is the probability that the next tornado will occur within the next seven months.

Applying the rule of three, we can infer that since the average number of tornadoes in a year is 3.9, the average number of tornadoes in a nine-month period is 3.9*7/12 = 2.275. It is reasonable to believe that the distribution of tornadoes over time is Poisson. Let's refer to X as the number of tornadoes in a seven-month period. X has a Poisson distribution with a parameter of 2.27.

The probability of X being greater than or equal to 1 is equivalent to the likelihood that the next tornado will occur within the next seven months.. However P(X≥1) = 1-P(X=0), and

[tex]p(X=0) = (e^{2.275} * 2.275^{0}) / 0![/tex] = 0.1027  

Thus, the probability that the next tornado comes within the next 7 months is 1-0.1027  = 0.8973.

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Answer:

{1, 3, 5, 7}

Step-by-step explanation:

U = {1, 2, 3, 4, 5, 6, 7, 8}

P = {2, 4, 6, 8}

P'= {1, 3, 5, 7}

Answer: 11

Step-by-step explanation:

Let the number be x.

[tex]9x+30=140-x\\\\10x=110\\\\x=11[/tex]

Answer: $17

Step-by-step explanation:

$425 divided by 25

Answer:

Her hourly rate is $17/hr.

Step-by-step explanation:

We can figure this out by taking the total dollars ($425) and dividing it by how many hours she spent working (25). 425 divided by 25= 17. Therefore, her hourly rate is 17$/hr.

Based on the described sampling approach, it should be concluded that the responses were from a voluntary response sample, so the cafeteria staff should not use the results to draw any conclusions. (Option D).

Voluntary response sample refers to a response sample in which the researcher puts out a request for population members to join the sample, and the decision of whether or not to be in the sample resides with the people. As it is a sample comprising of voluntarily participants, people who chose to participate usually do so as they have a strong opinion on the subject of the survey. Typically, voluntary response samples oversample members with strong opinions and under sample members with little to no opinion on the subject of the survey. Hence, inferences from a voluntary response sample are not as reliable as conclusions based on a random sample of the entire population under consideration.

Note: Question is incomplete. The options were missing which are a. Since all of the students had an opportunity to respond, this is evidence that a majority of all the students supports major changes. b. The cafeteria staff should not use the results to draw any conclusions since some students may not have filled out a comment card, which is nonresponse. c. If the students recorded their grade level with their response, the staff could make the original sample a stratified sample and use the responses to learn what proportion of each grade recommends major changes to food selection. d. The responses were from a voluntary response sample, so the cafeteria staff should not use the results to draw any conclusions. e. The opportunity to fill out comment cards should be offered to students at all high schools in the school district to get a larger sample size, which will make the results more reliable

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The salesman A must make 150 order to make the same amount of salesman B .

In the question ,

it is given that ,

Salesman A gets paid $300 per month

for every sale salesman A get $8 .

let the number of sales made by salesman A be "x" .

So, amount made by salesman A = 300 + 8x

Salesman B earns per month = $1500 .

To make the amount earned by both the salesman same ,

300 + 8x = 1500

8x = 1500 - 300

8x = 1200

x = 1200/8

x = 150

Therefore , The salesman A must make 150 order to make the same amount of salesman B .

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The birth rate in England in 1994 is 13 and the percentage fall in Wales is 28.23%

(a)In England, from 1961 to 1994, the birth rate fell by 26.1%

We need to find the birth rate in England in 1994

Birth rate in 1961 is 17.6

Birth rate in 1994 = 17.6 - 17.6 x26.1/100

= 17.6 - 17.6 x261/1000

= 17.6 - 4.6

= 13

(b) In Wales, the birth rate also fell.

The birth rate in 1961 is 17.0

The birth rate in 1994 is 12.2

Percentage fall is 100 x (17.0 - 12.2)/17.0

Percentage fall is 28.23 %

Therefore, the birth rate in England in 1994 is 13 and the percentage fall in Wales is 28.23%

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The resulting coordinate of △ D'E'F' is translated by the vector is

(-1, -2),  (3,-4), and (1, -7)

Given the vertices of ∆DEF are D(2,5), E(6,3), and F(4,0).

we are asked to graph ∆DEF and its image when you translate ∆DEF using the vector (-3,-7)​.

If the coordinate of the vertices is translated by the vector (-3, -7), the resulting coordinates of △ D'E'F' will be expressed as:

D'= (2-3, 5 - 7) = (-1,-2)

E' = (6 - 3, 3 - 7) = (3, -4)

F' = (4 -3 , 0 - 7) = (1, -7)

Hence we get the required coordinates of the translated image.

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Answer:

Twenty-three and seven-ninths

Step-by-step explanation:

Might not be correct I don't really remember how to do this

Using the model Carter will find parts A, B and C b to be

Part A = 26 tens

Part B = 13

Part C = 13 ones

A model is a representation in form of shape used for to achieve a desired aim. Models are choose with respect to the importance

The given model is a rectangle

Subtracting 13 from 273 to give 260. This  can be arranged in tens by doing

= 260 / 10

= 26

Hence, A is 26 tens

Representing the C part in place value we have 13 ones

Since B = C, we have B = 13

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x+119°=180°(Co-interior angles are supplementary m || n)

[tex]x = 180 - 119 \\ x = 61[/tex]

y=119°(alternate angles are equal m ||n)

GOODLUCK.

Aiden's tennis ball will reach the ground 0.65 seconds than Mason's tennis ball

The function of time with respect to distance is given as

(sqrt(d)/(4))

Rewrite the function properly

This is represented as follows

√d/4

It can also be written as

t = 1/4√d

From the question, we have

Aiden = 50 meters

Mason = 20 meters

The time difference is then calculated as

T = t₁ - t₂

So, we have

T = 1/4√d₁ - 1/4√d₂

The equation becomes

T = 1/4√50 - 1/4√20

This gives

T = 1/4(√50 - √20)

Evaluate

T = 0.65

Hence, the time difference is 0.65 seconds

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Given:

The speed of the beetle is, s = 9 km/h.

The objective is to convert the speed into centimeters per second.

Explanation:

Since, it is known that,

Conversion;

Then, the speed can be converted as,

Hence, the the converted value is 250 cm/s.

Answer: False

Step-by-step explanation: The two lines do not overlap so they do not intercept.

We were given that:

For P

The axis of symmetry for function

f(x) is x = 8 and for h(x) is x = 3.

We know that the quadratic equation in vertex form is, y = a (x - m)² + n

where (m, n) is the vertex of the parabola.

And, the axis of symmetry is x = m.

Consider function f(x)

f(x) = -4(x - 8)² + 3

This function represents a quadratic equation in vertex form with vertex (8, 3)

So, the axis of symmetry for function f(x) would be x = 8

We know that the axis of symmetry is the vertical line that goes through the vertex of a parabola so the left and right sides of the parabola are symmetrical.

Consider the function h(x)

We can observe that the vertex of parabola is (3, 2)

So, the axis of symmetry would be x = 3.

Therefore, the axis of symmetry for function

f(x) is x = 8 and for h(x) is x = 3.

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Answer:

$107125.80

working out:

50000x1.115^7=107125.8 (rounded)

The empirical rule state that, for normally distributed data, almost all of the data fall within three standard deviations either side of the mean. Specifically,

-68% of data within 1 standard deviation.

-95% of data within 2 standard deviation

-99.7 of data within 3 standard deviation.

In our case the mean is

and the standard deviation is

then, the empirical formula imply that

and

then, the answer is 14 minutes to 34 minutes

Answer:

D

Step-by-step explanation: