2/3 of the students in Mrs. Gracie’s class are boys . If there are 27 students in the class, how many of them are girls?

According to the information, it can be inferred that the total surface of the figure is 23.18yr². Additionally, the volume would be 7.8 yr³

To calculate the surface of the figure we must perform the following mathematical procedure.

We must find the surface of each of the faces that the figure has, we do this by multiplying base by height; in the case of triangles it is base times height divided in two.

Now we must multiply these values by the number of faces of this dimension:

Then we add all the surfaces to have the total surface

On the other hand, to find the volume of the figure we must multiply height by length by width; in the case of the triangle it is the same formula because it has a rectangular base.

Learn more about yards in: https://brainly.com/question/28365360

#SPJ1

In reference to the given focus and directrix, the standard form of the equation of the parabola is (x - 3)² = 12y.

The standard form of the equation of a parabola with a horizontal axis of symmetry and a focus at (p, q) is:

(x - p)² = 4c(y - q)

where, c is the distance from the focus to the vertex.

In this case, the focus is at (3,0), which means that p = 3 and q = 0. The directrix is at x = -3, which means that the vertex is at the midpoint between the focus and the directrix, which is (0,0). The distance from the vertex to the focus (or from the vertex to the directrix) is c = 3.

Substituting these values into the standard form equation, we get:

(x - 3)² = 4(3)(y - 0)

Simplifying, we get:

(x - 3)² = 12y

So the standard form of the equation of the parabola is (x - 3)² = 12y.

To know more about the equation of the parabola, visit: https://brainly.com/question/11911877

#SPJ1

Answer:

$750

Step-by-step explanation:

The cost of cell phone usage for 1000 minutes would be 1000 minutes * $0.15 per minute = $150.

Adding the initial fee of $600, Kim Kardashian's total bill would be $600 + $150 = $750.

Aɳʂɯҽɾҽԃ Ⴆყ ɠσԃKEY ꦿ

An equation for a line perpendicular to the line 2 = 10 can be found by finding the slope of that line and then finding the slope of the perpendicular line. The slope of the line 2 = 10 is 0, so the slope of the perpendicular line would be undefined.

The equation of a line with slope m passing through the point (x1, y1) can be written in the form:

y - y1 = m(x - x1)

Since the slope of the line is undefined, the equation of the line would be in the form:

x - x1 = constant

To find the equation of the line that passes through the point (3, 2), we substitute the values into the equation:

x - 3 = constant

So the equation of the line that is perpendicular to the line 2 = 10 and passes through the point (3, 2) is:

x - 3 = constant

or simply:

x = 3.

In circle L with m/KLM = 60 and KL = 18 units, the length of arc KM is approximately 18.85 units.

What is circle?

A circle is a geometrical shape that is defined as the set of all points in a plane that are equidistant from a given point called the center of the circle. The distance between the center of the circle and any point on the circle is called the radius of the circle.

We can use the formula for the length of an arc of a circle:

L = rθ

where L is the length of the arc, r is the radius of the circle, and θ is the angle subtended by the arc at the center of the circle (in radians).

In this problem, we are given the measure of the central angle m/KLM = 60 degrees, which is equal to 60/360 = 1/6 of a full revolution (360 degrees). Therefore, the angle θ subtended by the arc KM is:

θ = (1/6) * 2π = π/3 radians

To find the length of arc KM, we need to know the radius of circle L. Since we are not given this information directly, we can use the fact that KL is a chord of the circle and the perpendicular bisector of KL passes through the center of the circle. Let O be the center of circle L, and let N be the midpoint of KL. Then ON is the radius of the circle, and KN = KL/2 = 9 units.

We can use the Pythagorean theorem to find ON:

ON² = OM² + MN²

where OM is the distance from O to the midpoint of LM. Since OM is perpendicular to LM, it is also the altitude of triangle KLM, and we can use the formula for the altitude of an equilateral triangle to find that OM = ([tex]\sqrt{3}[/tex]/2)KL = 9[tex]\sqrt{3}[/tex] units.

Since MN = KL/2 = 9 units, we have:

ON^2 = [tex](9*\sqrt{3} )^2 + 9^2[/tex] = 243 + 81 = 324

so ON = 18 units.

Now we can find the length of arc KM using the formula:

L = rθ = 18 * (π/3) = 6π units

Rounding to the nearest hundredth, we get:

L ≈ 18.85 units.

Therefore, the length of arc KM is approximately 18.85 units.

Learn more about  equilateral triangle

https://brainly.com/question/3461022

#SPJ1

The truth table for the statement is

p     q     ~p    q ↔️ ~p   ~(q ↔️ ~p)

-------------------------------------

T     T     F     F        T

T     F     F     F        T

F     T     T     T        F

F     F     T     F        T

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

~(q↔️~p)

To construct the truth table, we make use of the following notations

p, q, ~p, (q↔️~p) and ~(q↔️~p)

The truth table for the statement ~(q ↔️ ~p) is then represented as follows:

p     q     ~p    q ↔️ ~p   ~(q ↔️ ~p)

-------------------------------------

T     T     F     F        T

T     F     F     F        T

F     T     T     T        F

F     F     T     F        T

The condition for ↔ is that it is true if both statements are true

Read more about truth table at

https://brainly.com/question/14458200

#SPJ1

Answer: no exact answer

Step-by-step explanation:

Answer: A) [tex]y=\frac{3}{7}x-2[/tex]

Step-by-step explanation:

its just the answer, and if you want explanation just say...

Answer: Sure! Here is a table showing the value of y for different values of x using the equation y = 1/3x + 2:

x                                y

1                                2.33

2                               2.67

3                               3.00

4                               3.33

5                               3.67

Note that the values of x in the table are just examples, you can use any value of x that you want to find the corresponding value of y.

Step-by-step explanation:

The amount of money that needs to be deposited now into an account to obtain $6,200 in 15 years is $2,928.67.

Mathematically, continuous compounding interest can be calculated by using this mathematical expression:

P(t) = P₀e^{rt}

Where:

Substituting the given parameters into the continuous compounding interest formula, we have;

P(t) = P₀e^{rt}

$6,200 = P₀e^{0.05 × 15}

$6,200 = P₀e^{0.75}

Principal, P₀ = 6,200/e^{0.75}

Principal, P₀ = 6,200/2.11700001661

Principal, P₀ = $2,928.67.

Read more on compound interest here: https://brainly.com/question/30427848

#SPJ1

Answer:

Step-by-step explanation:

a

A. The firm's short-run total cost curve can be calculated as TC = 2K + 4L. The short-run average cost curve function will be SAC = TC/Q, where Q is the output.

B. The firm's short-run marginal cost function is MC = 4/Q. The short-run total cost (STC) at 25 and 200 levels of output will be 800 and 2400 respectively. The short-run average cost (SAC) at 25 and 200 levels of output will be 32 and 12 respectively. The short-run marginal cost (SMC) at 25 and 200 levels of output will be 16 and 8 respectively.

C. The graph of the SAC and SMC curves is shown below.

SAC and SMC Graph

D. The SMC curve intersects the SAC curve at its lowest or minimum point because at this point, the SAC curve is at its most cost-efficient level, meaning that the firm's costs are minimized. This is because at this point, the marginal cost is lower than the average cost, meaning that the firm can produce additional units of output with a decreasing cost.

Answer: C

Step-by-step explanation:

I am fairly certain this is the right answer. Good luck on your quiz!

Answer:C

Step-by-step explanation:

I remember this from class one time hope it helps:)

Answer:

Step-by-step explanation:

The probability that someone could guess the correct code for the car model with a keypad of 5 numbers is 1 in 120,000, or approximately 0.0000083.

To calculate this, we need to determine the total number of possible combinations of 5 numbers (without repetition) from a set of 5 numbers. This can be calculated as 5!/(5-5)! = 5! = 5x4x3x2x1 = 120.

So, the probability of guessing the correct code is 1/120 or 0.0000083. This means that the chances of guessing the correct code are very low and the car's security system is fairly secure.

There was a 305.1% increase in the value from 2000 to 2010.

What is Percent?

To compute a percentage, divide the value by the entire amount and multiply the result by 100.

To calculate the percent increase, we need to determine the difference between the two values and divide it by the original value, then multiply by 100 to express it as a percentage.

For the year 2000:

Percent increase = (22.5 - 5.53) / 5.53 * 100 = 305.05%

And rounded to the nearest tenth of a percent, this would be 305.1%.

So, There was a 305.1% increase in the value from 2000 to 2010.

To know more about Percent visit,

https://brainly.com/question/24877689

#SPJ1

Answer:

15 cups

Step-by-step explanation:

So we have a ratio, butter:sugar. This ratio is given as 3:5, or 3 parts to 5 parts. Basically, every 3 cups of butter you use, you use 5 cups of sugar.

In order to calculate this, we simply need to divide the amount of butter being used by 3, and then multiply that by 5. This way, we are figuring out how much a singular "part" is in this situation, and then multiplying that by 5 for the 5 parts sugar.

9/3 = 3

3*5 = 15

Therefore, you have 15 cups of sugar.

The leading coefficient of the expression is 1

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

4x² + x4 -8 -5

When written in standard form, we have

x^4 + 4x^2 - 8 - 5

Evaluate the like terms

x^4 + 4x^2 - 13

The leading coeffiicient is the coefficient of the term with highest power

In this case, it is

Coefficient = 1

Hence, the value is 1

Read more about expression at

https://brainly.com/question/15775046

#SPJ1

The shape is most specifically a trapezoid because it has a pair of parallel sides

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

The figure

From the figure, we have the following highlights:

Using the above as a guide, we have the following:

The shape is most specifically a trapezoid

Read more about trapezoid at

https://brainly.com/question/16725694

#SPJ1

The statement that all numbers that have 5 as a factor also have 2 as a factor is false, as numbers ending in 5 have five as a factor but are odd numbers, meaning that they do not have two is a factor.

The factors of a number are the numbers by which the number is divisible.

Hence the numbers that have 2 and 5 as factors as the multiples, given as follows:

Numbers that finish in 5 are odd, meaning that they do not have 2 is a factor, hence the statement is false.

More can be learned about the factors of a number at https://brainly.com/question/219464

#SPJ1

a. This is an example of continuous growth, as the functions for the GDPs of both countries are given as continuous functions of time.

(b) In the function for China's GDP, the parameter 1.35 represents the initial level of GDP in the year 2000, and the parameter 1.076 represents the annual rate of growth of GDP. In the function for the US's GDP, the parameter 10.4 represents the initial level of GDP in the year 2000, and the parameter 1.024 represents the annual rate of growth of GDP.

It should be noted that on order to calculate the projected level of GDP for each country for the years 2011, 2025 and 2047, we can substitute the corresponding values of t into the functions for YChina and YUSA:

For China:

YChina(11) = 1.35 * 1.076^11 ≈ 4.65 trillion dollars

YChina(25) = 1.35 * 1.076^25 ≈ 30.83 trillion dollars

YChina(47) = 1.35 * 1.076^47 ≈ 516.97 trillion dollars

For the US:

YUSA(11) = 10.4 * 1.024^11 ≈ 15.63 trillion dollars

YUSA(25) = 10.4 * 1.024^25 ≈ 30.19 trillion dollars

YUSA(47) = 10.4 * 1.024^47 ≈ 57.17 trillion dollars

So according to these projections, China's GDP has already surpassed the US's GDP as of 2025 and is expected to continue to grow at a much faster rate than the US's GDP in the future.

Learn more about growth on:

https://brainly.com/question/1669287

#SPJ1

The total distance that Cami walked from home to school, then home, and then library, is 7. 46 miles

The distance walked by Cami, can be found to be :

= Distance from home to school + distance from school to home + distance from home to library

The distance in kilometers is:

= 5 + 5 + 2

= 12 kilometers

In miles, this is:

= 12 / 1. 60934 km per mile

= 7. 46 miles

In conclusion, the distance walked by Cami in miles, was 7. 46 miles.

Find out more on miles walked at https://brainly.com/question/20373336

#SPJ1

The conditional probability P(B|F) of the two way table is; P(B|F) = 0.37 given that the students prefer to write with block letters, there is a 0.37 probability that they have fair dancing skills

Two-way tables are a way of sorting data so that the frequency of each category can be seen quickly and easily.

Conditional probability is defined as the possibility of an event or outcome happening, based on the existence of a previous event or outcome.

Now, from the given two way table,

B = the student prefers writing in block letters.

F = the student's dancing skills are fair.

Thus;

P(B|F) = 17/45

P(B|F) = 0.37

Read more about conditional probability of two-way table at; https://brainly.com/question/23382435

#SPJ1

−26am^2 + 26am + 37a

The equation of the line that contains diagonal AH is  y = -4/7 x + 51/14.

Rhombus is a parallelogram whose all sides are of equal lengths.

Its diagonals are perpendicular to each other and they cut each other in half( thus, they're perpendicular bisector of each other).

Its vertex angles are bisected by its diagonals.

The triangles on either side of the diagonals are isosceles and congruent.

Given;

The endpoints of the diagonal MT are M(0,-1) and T(4,6).

Now, The point that it passes through in this case is the midpoint of the diagonal MT. Using the midpoint formula you get

( (0+4)/2 , (-1+6)/2 ) = (2,2.5).

The slope of MT is (6--1)/(4-0) = 7/4.

We need this because the other diagonal must be perpendicular, which means that the slopes must be negative reciprocals. So the negative reciprocal of 7/4 is -4/7.

Now that we have the slope and the point, we can just use y=mx+b. We have an x and y value as well as the m....so we can substitute them in and calculate b.

2.5 = -4/7 (2) + b

5/2 = -8/7 + b

5/2 + 8/7 = b

35/14 + 16/14 = b

51/14 = b

Therefore, in the rhombus diagonal line has the equation will be y = -4/7 x + 51/14

To learn more about rhombus visit;

https://brainly.com/question/23032581?referrer=searchResults

#SPJ1

m∠K = 59.09°. This can be solved by using the concept of SAS theorem.

Triangles are congruent if their two sides and included angles are equivalent to those of another triangle's two sides and included angle. The SAS Theorem states that two triangles are congruent if their included angle and two of their sides are the same.

Here, ∠B = m∠K (consider it)

sin B /b = Sin A /a

sin B / 15 = sin 31° / 9

sin B / 15 = 0.5150 / 9

sin B / 15 = 0.057

sin B = 0.858

B = 59.09°

Thus, m∠K = 59.09°

To know more about SAS theorem refer to:

https://brainly.com/question/22472034

#SPJ1

a) The distribution of the mean weight of 10 apples picked at random is normally distributed.

b) The mean, μ, is 45 oz.

What is normal distribution and mean?

normal distribution: The normal distribution, also known as the Gaussian distribution, is a symmetric probability distribution about the mean, indicating that data near the mean occur more frequently than data distant from the mean.

Mean: In mathematics, a mean is the average of a data set, which is calculated by adding all of the numbers together and then dividing the total of the numbers by the number of numbers.

a) The distribution of the mean weight of 10 apples picked at random is approximately normally distributed. This is because, according to the Central Limit Theorem, when the sample size is sufficiently large, the distribution of the sample mean becomes normal regardless of the underlying population distribution.

Here, we have a sample size of 10, which is considered large enough to apply the Central Limit Theorem. Also, we know that the underlying population distribution of the weight of a single apple is normal.

b) The mean weight of 10 apples picked at random is simply the mean of the individual weights of those 10 apples. Since the individual weights of the apples are normally distributed with a mean of 45 oz and a standard deviation of 3 oz, the mean weight of 10 apples will also be normally distributed with a mean equal to the mean of the individual weights, which is 45 oz.

Therefore, the mean, μ, is 45 oz.

To know more about normal distribution visit,

https://brainly.com/question/4079902

#SPJ1

Answer:

30°

Step-by-step explanation:

360 / 12 = 30°

30 X 1 = 30

Answer: His debts to income ratio is 35.29%

Step-by-step explanation:

His debts to income ratio is 35.29% ($2,400 / $6,800 = 0.3529).

The longest side of a triangle is always opposite the,

A. angle with the greatest measure.

If a² + b² < c² then it is an acute angle triangle.

If a² + b² = c² then it is a right-angle triangle.

If a² + b² ≥ c² then it is an obtuse angle triangle.

We know, The length of the largest side in a triangle is opposite to the largest angle.

The statement, The longest side of a triangle is always opposite the

angle with the greatest measure.

Because A longer angle will be more spread out and hence the opposite side will be longer too.

learn more about triangles here :

https://brainly.com/question/2773823

#SPJ9