can someone explain this please

Answer:

95 m would be the answer.

Answer: -3.11, -3.1, -3.01

Explanation:

We are comparing:

-3.11

-3.10

-3.01

-3.11 < -3.10 < -3.01

Answer:

B

Step-by-step explanation:

The probability that both the two tossed coins will come down heads (or tails) is 1/2 x 1/2 or 1/4.

Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.

To calculate the probability of two independent events happening at the same time, you multiply their individual probabilities.

In this case, the two events are the two coin tosses coming up heads (or tails).

The probability of the first coin coming up heads (or tails) is 1/2, and the probability of the second coin coming up heads (or tails) is also 1/2, so the probability of both of them coming up heads (or tails) is (1/2) x (1/2) = 1/4.

Hence, the correct answer would be an option (B).

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The total number of children in Ms. Mayer's class is 32.

Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100.

Percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%".

Percentage can be calculated by dividing the value by the total value, and then multiplying the result by 100. It is given by:

Percentage = (value / total value) * 100%

Let Total number of student = X

Therefore;

25% of X = 8

(25/100)X = 8

Therefore;

X = 8 / (25/100)

X = 800/25

X = 32

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Answer:

Step-by-step explanation:

1/4 + 4/9 + n= total amount of time spent on all of the instruments.

1/4 + 4/9=

9/36 + 16/36= 25/36 (time on piano and trombone)

36/36- 25/36= 11/36- total time spent on violin

After evaluation we get the above expression 1/18

It is the mathematical statement that expresses the method of a mathematical operation in a symbolic way. An expression is developed based on two or more terms along with operator. The terms are variables and numbers. In a word, an expression is either combination of numbers, operators or numbers, variables, operators.

we are given an expression

3c/ (2b²)

the value of b and c are also given, b= 3 and c = 1/3

The expression is written in fractional form that has 2 numbers and 2 variables. The number are 2 and 3, variables are c and b

The numerator 3c and the denominator 2b²

if we put the value of b and c

(3×1/3) / (2×9) =1/18

hence the result 1/18

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Considering the definition of a line, the equation of the line that passes through the point (0, -4) and has a slope of  is y=3x -4.

A linear equation o line can be expressed in the form y = mx + b

where

In this case, you know:

Substituting the value of the slope and the value of the point, the value of the ordinate to the origin b can be obtained:

-4= 3×0 + b

-4= 0 + b

-4= b

-4= b

Finally, the equation of the line is y= 3x -4.

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The expression y³x⁵ in terms of u and v is [tex]e^{3u} e^{5v}[/tex]

The natural logarithm of a number is its logarithm to the base of the mathematical constant e, which is an irrational and transcendental number approximately equal to 2.718281828459. The natural logarithm of x is generally written as ln x, loge x.  The equation being [tex]e^{\ln x}=x[/tex]

Given here, the polynomial expression y³x⁵ where [tex]{\ln x}=u[/tex] and  [tex]{\ln y}=v[/tex]   thus, [tex]e^{v} =y[/tex] and [tex]e^{u} =x[/tex]

∴ , y³x⁵=[tex]e^{3u}e^{5v}[/tex]

Hence, The expression y³x⁵ in terms of u and v is [tex]e^{3u} e^{5v}[/tex]

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The required values of x in the collinear points A, B and C are -3, 1, -12 and 12

Points that lie on the same line are called collinear points.

Given that, Points A, B, and C are collinear point B is between A and C.

We will use here segment addition postulate, to solve each part.

The segment addition postulate states that if we are given two points on a line segment, A and C, a third point B lies on the line segment AC if and only if the distances between the points meet the requirements of the equation AB + BC = AC.

1) AB = x+15, BC = x+13 and AC = 22

x+15+x+13 = 22

2x = 22-28

2x = -6

x = -3

2) BC = 2x-2, AC = 3x-3 and AB = 4

3x-3-(2x-2) = 4

3x-3-2x+2 = 4

5x = 5

x = 1

3) BC = x+28, AB = 2x+28 and AC = 12

x+20+2x+28 = 12

3x+48 = 12

3x = -36

x = -12

4) BC = x-8, AB = 9 and AC = 2x-11

x-8+9 = 2x-11

x+1 = 2x-11

x = 12

Hence, the values of x are -3, 1, -12 and 12

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Answer:

She has ridden 25 miles this week

Step-by-step explanation:

She rode 4 miles on monday to start off the week. Then she rode 4 times the amount he did on Monday, so multiply 4x4. Then he rode 5 more miles so add 5 and receive the answer of 25 miles.

Equation:

1. Write Equation: 4+(4x4)+5=

2. Solve for parenthesis: 4+16+5=

3. Solve: 4+16+5=25

-Hope this helped & Happy New Years

There are existing infinite solutions for the given equation 12s + 1 = 3 ( 4s + 1) - 2.

Solving the equation,

12s + 1 = 3 ( 4s + 1) - 2

 12s + 1 = 12s + 3 -2

 12s + 1 equals to (=) 12s + 1

Bringing constant to one side of the equation and variables to the other side of the equation so that equation could be solved

+ 12s - 12s   =   +  1 -  1

        0        =      0

This shows that the given equation has infinite solutions because after solving it gives a solution where both sides are equal.

"

Complete question:

How many solutions exist for the given equation 2s + 1 = 3 ( 4s + 1) - 2?

"

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The height of the rectangle is 200 cm.

A rectangle is a quadrilateral that has two pairs of opposite sides equal to each other and two pairs of opposite sides parallel to each other.

The sum of angles in a rectangle is 360 degrees. Each interior angle is equal to 90 degrees .

The diagonals are also equal and they bisect each other.

The rectangle has a length of 6cm and a breadth of 2m.

Therefore, the height of the rectangle is the breadth of the rectangle.

The height of the rectangle is 2 meters and the length of the rectangle is 6 cm. Let's convert the height of the rectangle to centimetres.

Hence,

height of the rectangle = 2m

1 m = 100cm

2m = ?

cross multiply

height of the rectangle = 2 × 100

height of the rectangle =  200 cm

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Median is not a measure of variability of a data set.

A collection of data is known as a data set (or dataset). In the case of tabular data, a data set relates to one or more database tables, where each row refers to a specific record in the corresponding data set and each column to a specific variable.

The data set includes values for each of the variables, such as the object's height and weight, for each set member. Data sets can also be made up of a group of files or documents.

The information supplied in a public open data repository is measured in the open data discipline using data sets. Over one million data sets are collected through the European portal.

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Let E be the region enclosed by the paraboloids z = x² + y² and z = 2 – x² - y² , then ∫∫∫(√x² + y²)dV is equals to the [tex]∫^{\pi}₀∫^{1} ₀∫^{2 - {r}^{2}} ᵣ₂ r² dz dr dθ ,[/tex].

We have two equations of paraboloids are z = x² + y² and z = 2 – x² - y² . Let E be the region enclosed by the (1) and (2). We have to determine the value of volume integral ∫∫∫(√x² + y²)dV in polar form. Now, change the Cartesian co-ordinates (i.e., x and y) into polar coordinates ( i.e., r and θ ). In polar coordinates, x = r cosθ ; y = r sinθ then, x² + y² = (r cosθ)² + (r sinθ)²

= r²cos²θ + r²sin²θ = r²(sin²θ + cos²θ)

= r² or √x² + y² = √r² = r

Plugging the value in curve equation,

z = x² + y² = r² and z = 2 – x² - y² = 2 - r²

i.e., z varies from r² to 2 - r²

and θ varies from 0 to π ( see in graph) and r varied from 0 to 1. Also, dxdy = r dr dθ. So, the triple integral or volume integral in polar coordinates is

[tex]∫^{\pi}₀∫^{1} ₀∫^{2 - {r}^{2}} ᵣ₂ r² dz dr dθ ,[/tex]

Hence, we get the required expression in polar coordinates.

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Answer:

u ≈ 5.5

Step-by-step explanation:

[tex]\frac{u}{9}[/tex] = [tex]\frac{8}{13}[/tex] ( cross- multiply )

13u = 9 × 8 = 72 ( divide both sides by 13 )

u = 72 ÷ 13 ≈ 5.5 ( to the nearest tenth )

I think the answer is D (Day) ...........

Answer:

i agree

Step-by-step explanation:

A line passes through the point (-4, 3) and has a slope of -2 will be y = - 2x - 5.

A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.

The linear equation is given as,

y = mx + c

Where m is the slope of the line and c is the y-intercept of the line.

The slope of the line is - 2. Then the equation of the line is given as,

y = - 2x + c

The equation passes through the point (-4, 3). Then the value of 'c' is given as,

3 = - 2(-4) + c

3 = 8 + c

c = - 5

The equation of the line is given as,

y = - 2x - 5

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The relationship between y and x can be equation as y = k/x, where k is a constant that does not change.

The equation y varies inversely as x means that as the value of x increases, the value of y decreases, and vice versa. To solve for y, we can use the general equation y = k/x, where k is a constant. This equation states that the value of y is directly proportional to the reciprocal of x.

1. Start by understanding that when two variables are inversely proportional, they follow the equation

y = k/x.

2. The constant, k, is a number that will remain the same throughout the equation.

3. For example, if y varies inversely as x, and

y = 2 when x = 4, then k = 8.

4. Therefore, the equation

y = k/x becomes y = 8/x.

5. To solve for y when x = 5, substitute x = 5 into the equation and solve: y = 8/5

= 1.6.

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Answer:

YES ITS A DIRECT VARIATION

Step-by-step explanation:

explanation in the picture

Answer:

x = -2

Step-by-step explanation:

Combine like terms

0 = 2x + 4

-4 = 2x

-2 = x

Secant line is the name given to any line that intersects a circle at two or more points. This line is called "secant" because it comes from the Latin word secare, which means to cut.

In mathematics, the secant line is used as a tool for finding the length of an arc, area of a sector, and other geometric measurements. The secant line is also used in calculus to calculate derivatives and integrals of functions.

The secant line is formed by two points on a circle’s circumference, and its slope is determined by those points. Its slope is calculated by the difference between the two points divided by the product of the radius of the circle and the angle made by the two points.

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Answer:

Step-by-step explanation:

The dimensions of the rectangle are:

Height = 40 cm

Width = 30 cm

Diagonal = 50 cm

The sketch is given below.

Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

We have,

A rectangle with a height of 40 cm and a width of 30 cm is drawn.

Now,

The diagonal of the rectangle can be calculated using the Pythagorean theorem.

So,

Diagonal side = x

x² = 30² + 40²

x² = 900 + 1600

x² = 2500

x  = 50 cm

Thus,

Rectangle:

Height = 40 cm

Width = 30 cm

Diagonal = 50 cm

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The solution of the inequality m + 1/4 < -[tex]1\frac{2}{5}[/tex] is  m < [tex]-1\frac {13}{20}[/tex].

In mathematics, "inequality" refers to a relationship between two expressions or values that are not equal to each other. To solve the inequality, you may multiply or divide each side by the same positive number, add the same amount to each side, take the same amount away from each side, and more. You must flip the inequality sign if you multiply or divide either side by a negative number.

Given:

We have the inequality expression,

m + 1/4 < -[tex]1\frac{2}{5}[/tex]

Simplifying,

m + 1/4 < -7/5

Subtracting 1/4,

m < -7/5 - 1/4

m < (-28-5)/20

m < -33/20

m < [tex]-1\frac {13}{20}[/tex]

Therefore, the solution is m < [tex]-1\frac {13}{20}[/tex].

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The algebraic representation of the reflection in the image is the one in option A.

(x, y) → (-x, y)

Here we have an image with two moons, such that one is the reflection of the other.

Notice that the reflection is across the vertical axis (it is the y-axis). So the y-values don't change after the reflection, only the x-values change.

So we will have a change of sign on the x-value, then the reflection must be written as:

(x, y) → (-x, y)

In this way we can conclude that the correct option is A.

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Answer:

[tex]f(-1)=-11\\f(0)=16\\f(2)=22[/tex]

Step-by-step explanation:

[tex]\displaystyle f(-1)=3(-1)-8=-3-8=-11\\f(0)=3(0)+16=16\\f(2)=3(2)+16=6+16=22[/tex]

Answer:

r≈11 m or 1/2πr2   /=fraction

Step-by-step explanation:

too many fractions to put but yeah have fun with answer though i'm 1 hour late

The radius of the semicircle given in the given figure is 10in.

A semicircle is a half circle created by splitting a circle into two equal parts. It is created when a line pierces the circle's center and touches its two ends. The diameter of the circle is the name given to this line.

In the given figure, A semicircle is drawn on the base of the rectangle.

Since the Area of the rectangle is 200 inches square and the height of the rectangle is 10 inches.

Thus, the Base of the semicircle  = 200/10 = 20in.

Since the Base of the rectangle is equal to the diameter of the semicircle that is 10.

Therefore, the semicircle's radius in the provided illustration is 10 inches.

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Complete question:

There is a 7.4% probability that the first marble will be green and the second will be red.

To calculate the probability, you will need to use the following formula:

P(A and B) = P(A) x P(B).

In this case, P(A) is the probability of picking a green marble on the first pick and P(B) is the probability of picking a red marble on the second pick. Using this formula,

we get P(A and B) = 333/999 x 222/998 = 0.074,

which is the probability of picking a green marble on the first pick and a red marble on the second pick.

So, there is a 7.4% chance of this happening.

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Answer:

-9

-4

1

|-2|

|-3|

|-5|

|-6|

Step-by-step explanation:

| |

This symbol means whatever number inside of it turns to positive

Answer:

-9

-4

1

|-2|

|-3|

|-5|

|-6|

The answer is (a) exactly three. The probability of selecting exactly three adults out of a sample of 20 who have been told that they have hypertension is calculated using the Binomial Distribution. The probability can be calculated using the formula:

The probability of selecting at least three adults out of a sample of 20 who have been told that they have hypertension is calculated using the Cumulative Binomial Distribution. The probability can be calculated using the formula:

The probability of selecting at most five adults out of a sample of 20 who have been told that they have hypertension is calculated using the formula:

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