This is Math and Science together for My Ap class environmental science class picture is below please help

The Inequality to represent year is x < 1939.

Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

Given:

Let x represent any year.

If we want years before 1939, then x must be less than 1939.

Then, the Inequality can be

x < 1939.

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Answer:37

Step-by-step explanation:

just write 4 instead of x

f(4)=[tex]4^{3} -2*4^{2} +3*4-7=64-32+5=37[/tex]

15x = 180

divide both by 15, and you get

x = 12

I'm unsure if this is correct

 Answer: Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees

The ratio 3:4 into percentage is 75%.

3/4 is expressed as 75% in terms of percentage.

Percentage:

In mathematics, a percentage is a number or ratio that represents a fraction of 100. This is one way of representing a dimensionless ratio between two numbers. Other methods include ratios, fractions, and decimals. Percentage is often indicated by writing a "%" sign after the number.

According to the Question:

The fraction 3/4 to an equivalent fraction with the denominator equal to 100

(3 × 25) / (4 × 25) = 75/100

Now,

75/100 is expressed as 75% in terms of percentage.

Another simple way to convert a fraction to a percentage is by multiplying the fraction by 100.

In this case, 3/4 × 100 = 75%

Thus, 3/4 is expressed as 75% in terms of percentage.

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The smallest pair of 4-digit numbers such that the difference between them is 303 and their HCF is 101 are 1010 and 1313.

HCF (Highest Common Factor) of two numbers, which is the largest number that divides both numbers evenly.

Let's call the smaller of the two numbers "x". The larger number would be "x + 303".

The HCF of these two numbers must be 101, which means that 101 must be a factor of both x and x + 303.

To find the smallest possible value of x, we need to find the smallest number that is divisible by 101 and also a 4-digit number.

The smallest multiple of 101 that is a 4-digit number is

=> 101 x 10 = 1010.

Therefore, x = 1010.

The larger number would be

=> x + 303 = 1010 + 303 = 1313.

To check if the HCF of these two numbers is indeed 101, we can use the Euclidean Algorithm or the Prime Factorization method to find the HCF.

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Answer:

Step-by-step explanation:

Let's call the original volume of water in the pitcher "V". Then, after Mai added 2.6 liters, the total volume of water in the pitcher became V + 2.6 = 10.4 liters.

To find the original volume of water in the pitcher, we can isolate V by subtracting 2.6 from both sides of the equation:

V + 2.6 = 10.4

V = 10.4 - 2.6

V = 7.8 liters

So the original volume of water in the pitcher was 7.8 liters.

Answer: 7.8

Step-by-step explanation:

really sorry if im wrong

If there are 10 days of sleeping a month then in a year there are 120 days of sleeping.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Sleeping 8 hours a day is the same as sleeping 10 days a month.

In according to hours the number of hours sleeping in month will be

= 8 x 30

= 240 hours

= 240 / 24

= 10 days

So, in a year the number of days of sleeping is

= 10 x 12

= 120 days

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Answer: 0,5

x = 0
y = 5

Answer: (0,5)

Step-by-step explanation:

Since "y" is equal to -6x+5 everywhere you see a "y" you can replace it with -6x+5.

-2x-6x+5=5

Combine like terms

-8x+5=5

Isolate x (subtract 5 from both sides)

-8x=0

Solve for x

x=0

Now that you have the value for "x" you can substitute the value into either equation and solve for y

-2(0)+y =5

y=5

or

y=-6(0)+5

y=5

The required equation which intersects the points (12, -2) and (6, -8) in the point-slope form is y+2 = x-12.

The general form of a linear equation is y-y1=m(x-x1). It draws attention to the line's slope and one of the line's points (that is not the y-intercept).

To understand more about it and see some instances, watch this video.

Both the slope-intercept form and the point-slope form can be used to write the equation of a straight line.

The slope and ANY point on the line are highlighted using the point-slope form.

Slope intercept form merely shows the slope and the y-intercept of a line.

So, we have:

m = 1

And points are (12, -2) and (6, -8)

We need to use the points: (12, -2)

Now, form the equation as follows:

y - (-2) = m (x-12)

y + 2 = 1(x-12)

y+2 = x-12

Therefore, the required equation which intersects the points (12, -2) and (6, -8) in the point-slope form is y+2 = x-12.

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According to the information, we need 107.42ft of black cord and 26 yards of fabric to make the design.

To find the amount of black cord that we need in this design we must calculate the perimeter of all the figures as shown below:

rectangle

Square

triangle

Circle

Total

To calculate the amount of fabric, we must find the visible area of the figures and calculate what the area is in yards.

rectangle:

Square:

Triangle:

Circle:

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Answer:

The answer is 20, so the answer is (D) 20.

Step-by-step explanation:

Let's say x is the number of tokens purchased for each of the three types. Then, the total amount spent is 0.10x + 0.15x + 0.20x = $9.

Combining like terms, we get 0.45x = $9.

Finally, dividing both sides by 0.45, we get x = 20.

So, 20 tokens were purchased for each of the three types.

The answer is 20, so the answer is (D) 20.

The Grade Point Average at Purdue University is determined using a 4.0 scale (GPA).

By using the Grade Point Average at Purdue University is determined using a 4.0 scale (GPA). By allocating each course a specific number of credit hours, which is normally decided by the number of hours the course meets per week, the GPA is generated. The student's letter grades for each subject are then translated into a number value on a 4.0 scale, as seen below:

A = 4.0 A- = 3.67 B = 3.0 B- = 2.67 C = 2.0 C- = 1.67 D = 1.0 F = 0.0

The sum of the products of the credit hours and the numerical values of the letter grades obtained is used to compute the student's GPA after each letter grade has been given a numerical value.

The Grade Point Average at Purdue University is determined using a 4.0 scale (GPA). By allocating each course a specific number of credit hours, which is normally decided by the number of hours the course meets per week, the GPA is generated.

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two equations are: v = u + 0.5a and (v)² = (u)² + 4a.

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.

Given, the distance traveled by an object in t = 30 minutes is 2 miles

Let "v" be the final velocity of an object,

"u" be the initial velocity of an object,

and "a" be the acceleration of an object.

From the standard velocity equation:

final velocity = initial velocity + acceleration * time.....(1)

(final velocity)² = (initial velocity)² + 2*acceleration * distance....(1)

From equation (1)

v = u + a*30 minutes

time in hours,

v = u + 0.5a

From equation (2)

(v)² = (u)² + 2*a* 2

(v)² = (u)² + 4a

therefore, two equations are: v = u + 0.5a and (v)² = (u)² + 4a.

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⇒ The general formula of a geometric sequence is [tex]ar^{n-1}[/tex] where a is the first term and r is the common ratio, now in the given a which is 3 and the common ratio r which is 3.

to get the 10th term we use the same general formula

[tex]a_{n} =ar^{n-1}[/tex]

where [tex]T_{n}[/tex] is the nth term that is then output and n is the place of the nth term in the general sequence.

For the 10th term we substitute  10 in the place of n and simplify to find the value of the output.

[tex]a_{10} =ar^{(10-1)} \\a_{10} =ar^{9} \\[/tex]

Now since we know which formula to use to get the 10th term we can substitute the known values of the variables to get the output .

[tex]a_{10} =(3)(3)^{9} \\a_{10} =59049[/tex]

goodluck

Answer:

Step-by-step explanation:

Answer:

The pressure is decreasing at a rate of approximately 0.26 psi/s at t = 15 seconds.

What is pressure ?

In physics, pressure is the amount of force applied per unit area. It is a scalar quantity, which means that it has a magnitude but no direction. Pressure is typically denoted by the symbol P, and its units are commonly expressed in pascals (Pa), which is the SI unit of pressure.

Pressure can be defined as the amount of force F applied per unit area A:

P = F / A

For example, if a force of 100 newtons (N) is applied to an area of 2 square meters (m^2), then the pressure would be:

P = 100 N / 2 m^2 = 50 Pa

Pressure is an important concept in many areas of physics, including fluid dynamics, thermodynamics, and atmospheric science. It is commonly used to describe the behavior of gases and liquids under different conditions, such as changes in temperature or volume. Pressure can also be used to calculate other physical properties, such as the flow rate of a fluid or the speed of sound in a gas.

According to given condition :

The rate of change of the fuel pressure in the fuel tank of the space shuttle is given by the derivative of the function [tex]r(t) = 17e^(-0.1t)[/tex]psi per second with respect to time t. Taking the derivative of r(t), we get:

[tex]r'(t) = (-0.1) * 17e^(-0.1t)[/tex]Simplifying this expression, we get:

[tex]r'(t) = -1.7e^(-0.1t)[/tex]

To find the rate at which the pressure is decreasing at t = 15 seconds, we substitute t = 15 into the expression for r'(t):

[tex]r'(15) = -1.7e^(-0.1*15)[/tex]

r'(15) ≈ -0.26 psi/s

Therefore, the pressure is decreasing at a rate of approximately 0.26 psi/s at t = 15 seconds.

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The area of the enclosure is approximately 128.6 acres

To find the area of the trapezoid ABCD, we first need to find the lengths of its parallel sides. Let's use the fact that the angles of a quadrilateral add up to 360 degrees:

Angle ABC = 124 degrees

Angle BCD = 85 degrees

Angle CDA = 96 degrees

Angle DAB = 360 - 124 - 85 - 96 = 55 degrees

Now we can use the tangent function to find the lengths of the sides:

tan(2 degrees) = (height of AB) / (distance between Anna and Benito)

(height of AB) = (distance between Anna and Benito) × tan(2 degrees)

(distance between Anna and Benito) = (713 - 690) / tan(2 degrees) ≈ 18490.3 ft

(height of AB) ≈ 429.4 ft

Similarly, we can find the height of CD:

tan(3 degrees) = (height of AD) / (distance between Anna and Deon)

(height of AD) = (distance between Anna and Deon) × tan(3 degrees)

(distance between Anna and Deon) = (725 - 690) / tan(3 degrees) ≈ 8639.5 ft

(height of AD) ≈ 459.6 ft

Now we can use the trapezoid area formula:

Area = (height of AB + height of CD) × (sum of the parallel sides) / 2

Area = (429.4 + 459.6) × ((18490.3 + 8639.5) / 2) / 5280 ≈ 128.6 acres

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The result is 45a^3b^4+4b

The given expression is 45a^3b^4+36a^2b^5 ÷ 9a^2b^4 First, we will simplify the term 36a^2b^5 ÷ 9a^2b^4 by dividing the coefficients and subtracting the exponents of the variables.

36 ÷ 9 = 4

a^2 ÷ a^2 = a^(2-2) = a^0 = 1

b^5 ÷ b^4 = b^(5-4) = b^1 = b

So, 36a^2b^5 ÷ 9a^2b^4 = 4b

Now, we can substitute this value back into the original expression:

45a^3b^4+4b

We cannot simplify this expression any further since the terms do not have the same power of the variables.

So, the final answer is: 45a^3b^4+4b

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Answer:

for 8x + 9 Y = 0  

for xsmall2 + 4x + 13  y = 6x + 13

Step-by-step explanation:

The answers to all parts are shown below.

A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are sometimes known as indeterminates in mathematics.

Given:

The polynomial zeros are given as:

x = 7, x = -1 and x = -3

x - 7 = 0, x + 1 = 0 and x + 3 = 0

So, f(x) = (x - 7)(x + 1)(x + 3)

f(x) = (x - 7)(x² + 4x +3)

f(x) = x³ -3x² -25 x -21

Now, Rational function g(x)

g(x) = f(x) / (x² - x + 2)

After Factorizing

g(x) = (x-2) - 25x+ 25 /  (x² - x + 2)

The slant asymptote is the quotient i.e. x - 2

Hence, the slant asymptote of the function g(x) is x - 2

So, the discontinuities of g(x)

g(x) = (x³ -3x² -25 x -21) /  (x² - x + 2)

Set the denominator to 0

x² - x + 2 = 0

(x - 2)(x + 1) = 0

x= 2 or x= -1.

So, the discontinuities and their types are:

Essential discontinuity at x = 2

Removable discontinuity at x = -1

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For the function y = 3x - 1, the correct conclusion is C.As the value of x increases, the value of y increases.

As the value of x increases, the value of y increases.

In this function, y is dependent on the value of x. The variable x is multiplied by 3 and then subtracted by 1 to find the value of y. As the value of x increases, the value of y will also increase because it is being multiplied by 3.

For example, if x = 1, then y = 3(1) - 1 = 2. If x = 2, then y = 3(2) - 1 = 5. As you can see, as the value of x increases, the value of y also increases.

Therefore, the correct conclusion for this function is C. As the value of x increases, the value of y increases.

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Answer: look at the image for the answers and solutions

Step-by-step explanation:

The statement which is given as , "The product of permutation matrices is again a permutation matrix." is True.

A permutation matrix is a square matrix whose entries are either 0 or 1 and has exactly one "1" in each row and each column. In other words, it is a matrix that represents a permutation of the rows (or columns) of the identity matrix.

When two permutation matrices are multiplied, the result is another square matrix with exactly one "1" in each row and each column. To see why this is true, consider two permutation matrices, A and B. Suppose that A is a m x m matrix and B is a m x m matrix. The product of these two matrices is another m x m matrix, C = AB.

Each entry in the matrix C is given by the dot product of the corresponding row in A and the corresponding column in B. If the row in A has a "1" in the i-th position and the column in B has a "1" in the j-th position, then the i,j-th entry in C will be "1".

Since both A and B are permutation matrices, each row in A and each column in B has exactly one "1". This means that each row in C will have exactly one "1", and each column in C will also have exactly one "1". Hence, C is also a permutation matrix.

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Answer:

Yes, the lines y = -5x + 1 and y = -5x + 8 are parallel. This is because they have the same slope (-5) but different y-intercepts (1 and 8). Parallel lines have the same slope, and different y-intercepts.

Answer:

For y = -5x + 1

x = [tex]\frac{1-y}{5}[/tex].

And

y = 1 - 5x.

Put on a graph: look at picture 1.

The for y = -5x + 8

x = [tex]\frac{8-y}{5}[/tex]

And

y = 8 - 5x.

Put on a graph: look at picture 2.

These two lines are parallel.

Compliment set of set A union set B is {1, 6, 9}.

Sets in mathematics, are simply a collection of distinct objects forming a group. A set can have any group of items, be it a collection of numbers, days of a week, types of vehicles, and so on. Every item in the set is called an element of the set.

The given sets are U={1,2,3,4,5,6,7,8,9,10}, A={4,6,8,10} and B={2,3,7}

Here, (A∪B)={4,6,8,10}∪{2,3,7}

= {2,3,4,5,7,8,10}

(A∪B)'=U-(A∪B)

= {1,2,3,4,5,6,7,8,9,10}-{2,3,4,5,7,8,10}

= {1, 6, 9}

Therefore, (A∪B)' is {1, 6, 9}.

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The area of the polygon will be equal to 58.1 square units.

A polygon's area is the region that it occupies. Polygons can be both regular and irregular in shape. Triangles, squares, rectangles, pentagons, hexagons, and other basic polygons are used in geometry. Each of these polygons has its own area.

A pentagon is a given polygon. The apothem is the perpendicular line drawn from the octagon's midpoint to the base of one of its sides.

The formula for determining the area of a regular polygon is expressed as

Area = a² × n × tan 180/n

Where n represents the number of sides of the polygon.

n = 5

Area = 4² × 5 × tan(180/5)

Area = 80 × tan 36

Area = 58.1 Square units

Hence, the polygon will have an area of 58.1 Square units.

The missing image is attached with the answer below.

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If Keshawn is 1.45 meters tall. At 12 noon, he measures the length of a tree's shadow to be 15.05 meters. the height of the tree to the nearest hundredth of a meter is 2.02 meters.

To find the height of the tree, we can use the similar triangles method. Let's call the height of the tree "h".

Since Keshawn and the tree are standing in the same spot, the same light source is casting their shadows, so the ratios of their shadow lengths to their heights are equal. This means we can set up the following proportion:

1.45 / h = 15.05 / 10.8

We can solve for "h" by cross-multiplying:

h = 15.05 * 1.45 / 10.8

h = 2.02 meters

Therefore, the height of the tree to the nearest hundredth of a meter is approximately 2.02 meters.

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Answer: 5.13

Step-by-step explanation: