how to do estimate 81=25+8x​

1+2 that what it is im juts joking idek how to solve that

Answer: n=5

Step-by-step explanation:

2-3|4n+1| = -61

⇒ |4n+1| = 21

⇒ n= 5

Given the information on the circular graph, we have that Medicare & Medicaid has the 35%, then, in angles this is:

For the rest, we have the following:

The value of z such that 0.13 of the area lies to the left of z is z = (1.14). Rounding this to two decimal places gives us z = 1.14 (rounded to two decimal places).

A z-score (aka, a standard score) indicates how many standard deviations an element is from the mean.

A z-score can be calculated from the following formula: z = (X - μ) / σwhere:z = the z-scores = the value of the elementμ = the population meanσ = the standard deviation

Let z be the value such that 0.13 of the area lies to the left of z.

This means that 87% (100% - 13%) of the area lies to the right of z.

Using the standard normal distribution table, we find the z-score that corresponds to an area of 0.87.

We can also solve this using the inverse normal distribution function of a calculator or statistical software.

The z-score that corresponds to an area of 0.87 is 1.14.

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Answer:

x > -18

x = { -17, -16 , -15 ,...............}

Step-by-step explanation:

\(\frac{x}{3}+4 > - 2\)

Subtract 4 from both sides

\(\frac{x}{3}> - 2 - 4\\\\\frac{x}{3} > -6\)

Multiply both sides by 3

\(x > -6*3\\\\x > - 18\)

Answer:

A)

7.2 7 * ⇒ correct

8.5 8 9 ⇒ 9 is the correct answer

12.9 13 * ⇒ correct

3.4 3 * ⇒ correct

11.5 11 12 ⇒ 12 is the correct answer

9.5 9 10 ⇒ 10 is the correct answer

B)

When a decimal number is 5 or more, you must round up, e.g. 4.5 must be rounded up to 5. You round down when the number is 4 or less.

Step-by-step explanation:

it C but if it not please don't blame me

Answer:

x = 0.2

Step-by-step explanation:

-7.8x = -1.56

-1.56/-7.8 = 0.2

x = 0.2

Answer:

\(x =\frac{1}{5}\) or \(0.2\) (they're the same)

Step-by-step explanation:

Answer: the answer is 4

Step-by-step explanation:

Answer:

$80+18%= $94.4

Step-by-step explanation:

80:100×18= $14.4 (18% of 80)

$80+14.4 = $94.4

Answer:x^(2)+2x-14=0

Step-by-step explanation:

The area of the parcel of land is 226934.799 square feet.

Given:

a triangular parcel of land has sides of lengths 590 feet, 980 feet and 1423 feet.

a).

Let a = 590 , b = 980, c = 1423  lengths

s = semi-perimeter

= 1/2(a+b+c)

= 1/2(590+980+1423)

= 1496.5

s-a = 1496.5-590

= 906.5

s-b = 1496.5-980

=516.5

s-c = 1496.5-1423

= 73.5

Heron's formula for area:

A = \(\sqrt{(s(s-a)(s-b)(s-c))}\)

= √1496.5(906.5)(516.5)(73.5)

= √51499402997.4

≈ 226934.799

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The exact values of the remaining five trigonometric functions are as follows:

1. cosθ = -√(-1023)

2. tanθ = 32/(-√(-1023))

3. secθ = 1/(-√(-1023))

4. cscθ = 1/32

5. cotθ = (-√(-1023))/32

Given that sinθ = 32 and cosθ < 0, we can use the Pythagorean identity to find the value of cosθ:

\(cos^2\)θ = 1 - \(sin^2\)θ

\(cos^2\)θ = 1 - \((32/1)^2\)

\(cos^2\)θ = 1 - 1024

\(cos^2\)θ = -1023

Since cosθ < 0, we take the negative square root:

cosθ = -√(-1023)

Now, we can find the remaining trigonometric functions:

1. cosθ: We already found that cosθ = -√(-1023).

2. tanθ: tanθ = sinθ/cosθ

tanθ = 32/(-√(-1023))

3. secθ: secθ = 1/cosθ

secθ = 1/(-√(-1023))

4. cscθ: cscθ = 1/sinθ

cscθ = 1/32

5. cotθ: cotθ = 1/tanθ

cotθ = (-√(-1023))/32

Therefore, the exact values of the remaining five trigonometric functions are as follows:

1. cosθ = -√(-1023)

2. tanθ = 32/(-√(-1023))

3. secθ = 1/(-√(-1023))

4. cscθ = 1/32

5. cotθ = (-√(-1023))/32

Note: The value of √(-1023) is an imaginary number, so the exact values of the trigonometric functions involve complex numbers.

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Answer:

\(\frac{1}{3^{6}}\)

Step-by-step explanation:

\(\frac{3^{-7}}{3^{-1}} \\\\\frac{1}{3^{-1+7}} \\\\\frac{1}{3^{6}}\)

Hope this helps!

The given equation for C_v in Einstein model is:

C_v = 3R(T/θ_E)^2(e^θ_E/T - 1)^2/e^θ_E/Tk_be

T = 1.38 x 10^-23 J/K (Boltzmann's constant)

h = 6.626 x 10^-34 J s (Planck's constant)

ν = 1 x 10^13 Hz (constant frequency)

R = k_b/hν,

which gives R = 2.08 x 10^-4 JK^-1mol^-1

At a constant frequency of 1 x 10^13 Hz, we can write

R = k_b/hν = 2.08 x 10^-4 JK^-1mol^-1

Using this value of R, we can plot the graph of C_v against temperature (T) from 1 K to 320 K.

Here's the explanation of the given formula of C_v:

In Einstein's model, the heat capacity of a solid is given by:

C_v = nR[(θ_E/T)^2 * e^(θ_E/T)] / [(e^(θ_E/T) - 1)^2]

where,

n = number of atoms in the solid

R = gas constantθ_

E = Einstein temperature

T = absolute temperature

Since we have R in terms of k_b and ν, we can substitute it in the above equation to get:

C_v = 3k_bN[(θ_E/T)^2 * e^(θ_E/T)] / [(e^(θ_E/T) - 1)^2]

where, N = Avogadro's number

So, we can rewrite the equation as:

C_v = 3R(T/θ_E)^2(e^θ_E/T - 1)^2/e^θ_E/T

At a constant frequency of 1 x 10^13 Hz,

we can write

R = k_b/hν = 2.08 x 10^-4 JK^-1mol^-1.

Substituting this value in the equation of C_v, we get:

C_v = 3(2.08 x 10^-4)(T/θ_E)^2(e^θ_E/T - 1)^2/e^θ_E/T

Now, we can plot the graph of C_v against T from 1 K to 320 K.

The graph will be as follows:

Graph of C_v against T from 1 K to 320 K at a constant frequency of 1 x 10^13 Hz.

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There are five rules in one group

From the question, we have

25 rules in 5 groups

In one group = 25/5 = 5 rules

There are five rules in one group

Divide:

Repetitive subtraction is the process of division. It is the multiplication operation's opposite. It is described as the process of creating equitable groups. When dividing numbers, we divide a larger number down into smaller ones such that the larger number obtained will be equal to the multiplication of the smaller numbers. One of the four fundamental mathematical operations, along with addition, subtraction, and multiplication, is division. Division is the process of dividing a larger group into smaller groups so that each group contains an equal number of things. It is a mathematical operation used for equal distribution and equal grouping.

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Answer:

59.5cm^2

Step-by-step explanation:

Area of a trapezoid is calculated by dividing the sum of parallel sides and that's multiplied by height

(12.5 + 4.5) ÷ 2 × 7 = 59.5cm^2

Answer: 160

Step-by-step explanation:

12+37+78

Answer:

y=2x-5

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(3-1)/(4-3)

m=2/1

m=2

y-y1=m(x-x1)

y-1=2(x-3)

y=2x-6+1

y=2x-5

Answer:

y = mx+b

Step-by-step explanation:

Answer: 12 oranges

Step-by-step explanation: To fill one glass, Adwoa needs 2 oranges. She made 6 glasses.

1 glass : 2 oranges

6 glasses : x oranges

x = \(\frac{6*2}{1}\) = 12

Answer:

There are 60 pieces of 20 cent coins

Step-by-step explanation:

Let the number of 50 cent coins be x.

Let the number of 20 cent coins by y.

Now, we are told that value of all coins is $27.

Also, 50 cent = $ 0.5 and 20 cents = $0. 2

Thus;

0.5x + 0.2y = 27 - - - - - (eq 1)

Now, we are told that there are twice as many 20 cent coins as there are 50 cent coins. So,

y = 2x - - - - (eq 2)

Putting 2x for y in eq 1,we have;

0.5x + 0.2(2x) = 27

0.5x + 0.4x = 27

0.9x = 27

x = 27/0.9

x = 30

Thus, y = 2 * 30 = 60

Thus,there are 60 pieces of 20 cent coins

The inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.

        ≤ : less than or equal to

        ≥ : greater than or equal to

        < : less than

        > : greater than

        ≠ : not equal to

Given is the maximum load for a certain elevator is 2000 pounds. The total weight of the passengers on the elevator is 1400 pounds. A delivery man who weighs 243 pounds enters the elevator with a crate of weight [w].

        1400 + 243 + w ≤ 2000

        w + 1643 ≤ 2000

        w + 1643 ≤ 2000

        w ≤ 2000 - 1643

        w ≤ 357

Therefore, the inequality to show the values of [w] that will not exceed the weight limit of the elevator is w + 1643 ≤ 2000. On solving the inequality, we get w ≤ 357. The graph of the inequality is attached.

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Answer: 21m

Step-by-step explanation:

From the question, we are informed that the scale drawing of a playground is 4 cm wide and 6 cm long and that the playground is 14 m wide.

Let the length of the playground be represented by x. Therefore,

4/6 = 14/x

4 × x = 14 × 6

4x = 84

x = 84/4

x = 21

Therefore, the length is 21m

Solution:

Given:

Therefore, to the nearest hundredth, the value of t for which the rocket's height is 82 feet is;

0.42 seconds or 12.21 seconds.

AnswerAverage pay per hour 19.15

Step-by-step explanation:

1750 + 2% = 1785 pay increase

1785 x 12 months = 21420 a year

21420 divided by 52 weeks in a year averages to 411.92 weekly

Divide 411.92 by the 45 hours of work is 19.15 per hour

Brainliest please, if correct.

Standard deviation is the square root of variance .

So,

It is used in measuring any deviation or shift from the calculated mean.  

From a data set, the mean of the data can be determined with which the standard deviation can be measure.

Therefore, Standard deviation is use to measure variation that exist in an individual data set. There are different type of data set from which variation is measured.

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The least-squares regression line of height versus age will have a slope of 0.8 .  Was true statement option (2)

The correlation coefficient (r) measures the strength and direction of a linear relationship between two variables, in this case, height and age. A correlation coefficient of 0.8 indicates a strong positive linear relationship between height and age. The slope of the least-squares regression line represents the change in the height of a child for each one-unit increase in age.

Therefore, a slope of 0.8 indicates that for each one-year increase in age, the expected increase in height is 0.8 units. The other options are not correct or relevant based on the given information.

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Full Question: the height and age of each child in a random sample of children was recorded. the value of the correlation coefficient between height and age for the children in the sample was 0.8 . based on the least-squares regression line created from the data to predict the height of a child based on age, which of the following is a correct statement?

responses on average,

Answer: Ehhhhhhh

Hello?

Oof

Answer: c. 1/6

Step-by-step explanation:

The least common demoninator would be 12, as 12 is a multiple of 4.

We can multiply the fraction 3/4 by (3/3)

3/4 = 3/4*(3/3)

= (3*3)/3*4)

= 9/12

We can plug in the value of 9/12 in as 3/4 back into the expression:

= 11/12 - 9/12

We can combine the numerators since there is a common denominator:

= (11-9)/12

= 2/12

Divide the numerator and denominator of this fraction by 2:

= 1/6

Answer:

$21.55

Step-by-step explanation:

21.50 + 44.95 + 12 = $78.45

100 - 78.45= $21.55