How to graph this Piecewise Function

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Answer: -87

Step-by-step explanation:  -(−5)² + 9(−5) − 17 =

-25 - 45 - 17  = -87

Answer:

f(x)= 3

Step-by-step explanation:

If f(x) is equal to -[tex]x^{2}[/tex]+9x-17 and f(-5)

You will substitute -5 where you see all the x's

-(-5)[tex]^{2}[/tex]+9(-5)-17

That will equal to

-25+45-17

Combine all the like terms

This will lead you to answer 3

So, f(x) =3

The number of students are enrolled in PE be 447.

A percentage expressed in decimal form is a proportion, but a proportion is not always a % expressed in decimal form.

A fraction expressed in a specific way is called a decimal. For example, you can write the fraction as 0.5 instead of 1/2, with the zero in the ones place and the five in the tenths place. The word decimal is derived from the Latin word decimus, which means tenth, and the number 10 (or decem).

From the given information, we get 30% of 1490

Convert 30% into a decimal and multiply by 1490

Convert 30 % into a decimal form: 0.3

Multiply 0.3 by 1490

= 0.3 × 1490

Simplifying the values, we get

0.3 - 1490

= 447

Therefore, the number of students are enrolled in PE be 447.

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The coordinates of the exponential equation are A ( 2 , 640 ) , B ( 3 , 512 ) and C ( 4 , 409.6 )

When you raise a quotient to a power you raise both the numerator and the denominator to the power. When you raise a number to a zero power you'll always get 1. Negative exponents are the reciprocals of the positive exponents.

The different Laws of exponents are:

mᵃ×mᵇ = mᵃ⁺ᵇ

mᵃ / mᵇ = mᵃ⁻ᵇ

( mᵃ )ᵇ = mᵃᵇ

mᵃ / nᵃ = ( m / n )ᵃ

m⁰ = 1

m⁻ᵃ = ( 1 / mᵃ )

Given data ,

Let the exponential equation be represented as A

Now , the value of A is

Let the first point be A ( 0 , 1000 )

Let the second point be B ( 1 , 800 )

Now , the exponential equation be represented as A

y = abˣ   be equation (1)

Substitute the value of x = 0 and y = 1000

1000 = ab⁰

So , the value of a = 1000

Substitute the value of x = 1 and y = 800

800 = ab¹

b = 800/1000

b = 0.8

So , the equation is y = 1000 ( 0.8 )ˣ  

Now , at the point A , the value of x = 2

So , y = 1000 ( 0.8 )²

y = 1000 x 0.64

y = 640

So , the point is A ( 2 , 640 )

Now , at the point B , the value of x = 3

So , y = 1000 ( 0.8 )³

y = 1000 x 0.512

y = 512

So , the point is B ( 3 , 512 )

Now , at the point C , the value of x = 4

So , y = 1000 ( 0.8 )⁴

y = 1000 x 0.4096

y = 409.6

So , the point is C ( 4 , 409.6 )

Hence , the coordinates are A ( 2 , 640 ) , B ( 3 , 512 ) and C ( 4 , 409.6 )

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To find the greatest common factor (GCF) of a sum, list the prime factors of each term in the sum. The GCF is the product of the common prime factors raised to the lowest exponent.

To find the greatest common factor (GCF) of a sum, you can first list the prime factors of each term in the sum. The GCF is the product of the common prime factors raised to the lowest exponent.

For example, to find the GCF of 36x² + 18x² + 12x², you would list the prime factors of each term:

36x² = 2² × 3² × x²

18x² = 2 ×  3² ×  x²

12x² = 2² ×3 × x²

The GCF is 2 × 3 ×  x² = 6x²

To rewrite the sum using the GCF and the distributive property, you divide each term in the sum by the GCF, and then multiply the GCF by the sum of the quotients:

(36x² + 18x²  + 12x²) / (6x² ) = 6 + 3 + 2

6x² × (6 + 3 + 2) = 6x² ×  11

So the sum can be rewritten as 6x² × 11

You can also use the same method to find GCF of numbers as well.

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The measure of the arc NST will be the largest one. Then the correct option is C.

Let r be the radius of the sector and θ be the angle subtended by the sector at the center. Then the arc length of the sector of the circle will be

Arc = (θ/2π) 2πr

If the central angle of the arc is maximum, then the measure of the arc will be maximum.

The measure of the angle ∠NST is maximum. Then the measure of the arc NST will be the largest one.

Thus, the correct option is C.

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The numerical value of both the mole and Avagadro’s number is 6.022 x 10²³.

The Avogadro constant, A, is the number of particles (such as atoms, molecules, or ions) in one mole of something. Its value is modernly defined as exactly 6.022 140 76 × 10²³. (As it is a pure number, it has no units.)

So, in 1 mol of helium, which has a mass of (very close to) 4 g, there are A

atoms; in 1 mol of sucrose, with a mass of 342 g, there are A molecules.

We can have moles of other kinds of things, including subatomic particles. The amount of charge known as the faraday is the charge of one mole of electrons (A of them; about 96 500 C).

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A right angle is defined as an angle that measures exactly 90 degrees.

To prove this:

This definition of a right angle has been established by mathematical convention, and it is widely accepted and used in mathematics and geometry. The reason for this is that a right angle is the most convenient and natural angle to use as a standard unit of measure for angles.

One reason is that a right angle is easy to construct and measure. A right angle can be created by using a square or a set square, which are simple and inexpensive tools. Also, right angles are found in many natural and man-made objects, such as corners of walls and buildings, which makes them easy to recognize.

Another reason is that a right angle is a fundamental building block in Euclidean geometry, and it is used to define other geometric concepts such as parallel lines and perpendicular lines. The properties of a right angle make it a useful tool for solving geometric problems and for understanding the relationships between angles and shapes.

In summary, the 90 degrees definition of a right angle is a mathematical convention that is widely accepted due to its convenience, natural appearance in many objects, and its importance in Euclidean geometry.

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The 4 laws of logarithms are product property, division property, power property and change of base property.

Product property - According to this principle, multiplying two logarithmic numbers is equivalent to adding their individual logarithms.

Division property - The difference between each logarithm is equivalent to the division of two logarithmic values.

Power rule/Exponential property - According to the exponential rule, the exponent times the logarithm of m's logarithm is equivalent to m's logarithm with a reasonable exponent.

Change of base property - A logarithm in one base is changed to a logarithm in another base using the change of base rule.

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Answer:

read my explanation because this will take a while to put in an answer and explain.

Step-by-step explanation:

slope: 3x

y-intercept: 48.

equation: y=48-3x

we get this from reading the question.

y=48-3x is your equation! it initially starts at 48, and everytime the hour changes it decreases by 3.

for the table:

0 - 48           5 - 33

1 - 45            6 - 30

2 - 42            7 - 27

3 - 39            8 - 24

4 - 36

the graph you could have filled by yourself, but here:

and when you are done, don't forget to connect the points! i didn't do it because i had to plot them and the line would override it.

No, it is not. X square 22 X square is not a polynomial because it does not have the standard form of a polynomial which is ax^n + bx^n-1 + cx^n-2 + ... + z.

A polynomial is written in the standard form when the term with the largest power of the variables comes first, followed by the subsequent terms in decreasing order of the variable power.

Leading term and leading coefficient are terms used to describe the first term and its coefficient, respectively, in the polynomial's standard form.

A polynomial's standard form is denoted by the formula f(x) = anxn + an-1xn-1 + an-2xn-2 +... + a1x + a0.

According to the definition of a polynomial in standard form, exponents must be written in decreasing order.

The standard form of polynomials is used to facilitate calculations.

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Answer:

8 X 8 = 64

Step-by-step explanation:

Answer:

-64x^6

Step-by-step explanation:

Answer

6x + 19

Step-by-step explanation:

First, set up the equation

x + 4x + 5 + 14 + x

Now simplify the like terms

6x + 19

Answer:

64

Step-by-step explanation:

56+58497657=875845455*-88787887879=5545426464

The area of the triangle is 27.9 sq.cm.

What is meant by area of triangle?

The total area that is bounded by a triangle's three sides is referred to as the triangle's area.

We have the lengths of two sides and the measure of the included angle. So, you can use the formula R = [tex]\frac{1}{2}[/tex]pr sin(Q), where p and r are the lengths of the sides opposite to the vertices P and R respectively.

Using the formula, the area, R= [tex]\frac{1}{2}[/tex] (9) (8.4) sin (132°).

R = 37.8 sin (132°)

R = 37.8 (0.74)

R = 27.9 (approx)

Hence, the area of the triangle is 27.9 sq.cm.

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The properties of limit are the following:

A limit is a value which obtained when a function approaches the output value for an input value. For a variable x approaches a particular value say "a", i.e., x → a and limit is denoted as [tex] \lim_{x \to a} f(x) \\ [/tex].

The basic properties of limit are :

1) Sum rule : limit of sum of two functions is equal to sum of individual function limit.

[tex]\lim_{x \to a} (f(x) + g(x)) = \lim_{x \to a} f(x) + \lim_{x \to a}g(x) \\ [/tex]

2) Product rule : The limit of product of two functions is equal to product of individual function limits.

[tex]\lim_{x \to a} (f(x) \times g(x)) = \lim_{x \to a} f(x) \times lim_{x \to a} g(x) \\ [/tex]

3) Difference rule : The limit of difference of two functions is equal to difference of individual function limits.

[tex]\lim_{x \to a} (f(x)-g(x))=\lim_{x \to a} f(x) - \lim_{x \to a}g(x) \\ [/tex]

4) Law of constant : The limit of a constant is equal to constant itself.

[tex]\lim_{x \to a}c \: = c \\ [/tex]

5) Constant multiply rule : The limit of product of constant with function is equal to constant times limit of function.

[tex]\lim_{x \to a} (k \times f(x)) = k\times lim_{x \to a}f(x)\\ [/tex]

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C = 300000

a = -0.07

The correct interpretation of x is OD. The variable x represents the number of years after 2000.

Answer:

Step-by-step explanation:

The exponential decay formula for this situation is

[tex]y=300,000(.93)^x[/tex]

where 300,000 is the initial value, .93 is decay rate (100% - 7% = 93% which is .93 as a decimal), and x represents the number of years after the year 2000. B is your answer.

To solve the equation x - 10 = 90, you can add 10 to both sides of the equation to get:

x - 10 + 10 = 90 + 10

x = 100

Therefore, the solution to the equation is x = 100.

You can also check this solution by substituting it back into the original equation:

x - 10 = 90

100 - 10 = 90

90 = 90

This confirms that x = 100 is a valid solution to the equation.

9. You are solving for the variable, x. Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x, by adding 10 to both sides of the equation:

[tex]x - 10 = 90\\x - 10 (+10) = 90 (+10)\\x = 90 + 10\\x = 100[/tex]

a. Add 10 to both sides.

10. You are solving for the variable, x. Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x, by multiplying 5 to both sides of the equation:

[tex]\frac{x}{5} = 5\\ (\frac{x}{5}) (* 5) = 5 (*5)\\x = 5 * 5\\x = 25[/tex]

d. Multiply both sides by 5.

~

Answer: 3b-a+7

Step-by-step explanation:

9b-6b=3b

3b-7-a

Answer: 3b+7-a

Step-by-step explanation:

9b+7-6b-a

3b+7-a

Answer:

1. A. -1.43 corresponds to an area of approximately 0.0637 under the normal curve.

B. 0.58 corresponds to an area of approximately 0.7295 under the normal curve.

C. -1.55 corresponds to an area of approximately 0.0633 under the normal curve.

D. For z>1.34, the area under the normal curve is approximately 0.0916.

--------

2. A. The 35th percentile corresponds to a z-score of approximately -0.48

B. The first quartile (Q1) corresponds to a z-score of approximately -0.67

C. For 12% of the data to fall above it, the z-score would be approximately 1.28

----------

3.  A. To find the area under the curve for x< 31 inches, we need to convert 31 inches to a z-score using the formula: z = (x - mean) / standard deviation. For this case, z = (31 - 36) / 10 = -0.6, the area under the curve for this is 0.2744

B. To find the area under the curve for x> 49 inches, we need to convert 49 inches to a z-score, the z-score is (49 - 36) / 10 = 1.3, the area under the curve for this is 0.0968

C. The area under the curve for x = 40 inches is 0.3520

D. To find the height at which 70% of 5 year olds are below it, we need to use the inverse standard normal calculator, which gives us a z-score of 0.84162, we can then use this z-score to find the corresponding x value by using the formula x = mean + (z-score * standard deviation) which in this case would be 36 + (0.84162*10) = 42.4 inches

Answer:

C

Step-by-step explanation:

15% is $3.00 not $0.30

The required point D was moved to (–3, –2). Quadrilateral ABCD would then be a square.

A quadrilateral is a four-sided shape as given in the picture in question.

Here,
When we shift point D to (-3, -2),
then
it becomes AB = BC = DC = AD, implying that the quadrilateral ABCD becomes the square.

Thus, the required point D was moved to (–3, –2). Quadrilateral ABCD would then be a square.

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The area of the square = 4π^2 * (38.5/π) cm^2 (circumference of circle used as side of square).

What is circumference of circle ?

Circumference is the distance around the edge of a circle. It can be calculated using the formula: C = 2πr, where C is the circumference and r is the radius of the circle.

We can use the formula C = 2πr to find the circumference of the original circle, where C is the circumference and r is the radius of the circle.

Given that the wire encloses an area of 38.5 cm square, we can use the formula A = πr^2 to find the radius of the circle.

A = 38.5 cm^2

πr^2 = 38.5 cm^2

r^2 = 38.5/π cm^2

r = (38.5/π)^0.5 cm

Now that we know the radius of the circle, we can find the circumference using the formula:

C = 2πr

Now, we can find the area of the square by squaring the length of one side of the square which is the circumference of the original circle

Area of square = C^2

Therefore, The area of the square = 4π^2 * (38.5/π) cm^2 (circumference of circle used as side of square).

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Given that the wire encloses an area of 38.5 cm square, we can use the formula A = πr^2 to find the radius of the circle.

A = 38.5 cm^2

πr^2 = 38.5 cm^2

r^2 = 38.5/π cm^2

r = (38.5/π)^0.5 cm

C = 2πr

Area of square = C^2

The area of the square = 4π^2 * (38.5/π) cm^2 (circumference of circle used as side of square).

Answer: The least number of bottles the trader can obtain is the greatest common divisor (GCD) of the number of liters in the two buckets.

We can use the Euclidean algorithm to find the GCD:

First find the remainder of 24 divided by 27, which is 24 % 27 = 0.

Since the remainder is 0, we know that the GCD of 24 and 27 is 27.

Therefore, the trader can obtain at least 27 bottles from the two buckets of beverages A and B.

Note that the GCD represents the size of the bottle and this is the least number of bottles that the trader can obtain.

Step-by-step explanation:

The total area of the shape is equal to 102 cm².

Mathematically, the area of a rectangle can be calculated by using this formula:

A = LW

Where:

Next, we would determine the area of this irregular shape in parts as follows;

Area of rectangle 1 = 15 × 6

Area of rectangle 1 = 90 cm²

Area of rectangle 2 = 4 × 3

Area of rectangle 2 = 12 cm²

Total area of irregular shape = 90 + 12

Total area of irregular shape = 102 cm²

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The 45-degree set square contains an angle of 90 degrees, and also 30/60 degree set square contains a right angle. The 45 degrees set square is utilised to draw vertical lines. With the help of set squares, we can sketch parallel lines and perpendicular lines, construct some standard angles, and so on.

Geometric tools are instruments utilised to draw different kinds of geometric shapes. In Maths, geometry is the most critical topic, in which we learn about the shapes of things. Different types of tools with different names are utilised to draw these geometric shapes while solving geometry problems.

Some of the most generally utilised geometric tools are:

Ruler

Compass

Protractor

Divider

Set-squares

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Answer:

L = 53.37 cm

Step-by-step explanation:

We have the relationship

M ∝ L³

We can rewrite this as an equation:
M = k · L³

where k, a constant, is known as the constant of proportionality

Given M = 100 kg when L = 20, we get

100 = k · 20³

100 = k · 8000

k = 100/8000 = 0.0125

If M = 1900 kg and k = 0.0125 we can plug in these values to get

1900 = 0.0125 L³

==>  L³ = 1900/0.0125

==> L³ = 152000

Therefore L = ∛152000

L = 53.36803 or

L = 53.37 cm  rounded to 2 DP

Answer:

380.00

Step-by-step explanation:

M=KL

100=20K

K=5

M=5L

1900=5L

L=380

Two matrices are row equivalent if they can be transformed into each other using elementary row operations.

Elementary row operations are operations such as the addition or subtraction of two rows, the multiplication or division of a row by a non-zero constant, or the interchange of two rows. Row equivalent matrices are equal in terms of row space, meaning any linear combination of the rows of one matrix will yield the same linear combination of the rows of the other matrix. An example of two row equivalent matrices is given below:

Matrix A =

[tex]\begin{bmatrix} 1 & 2 & 3 \\4 & 5 & 6 \end{bmatrix}[/tex]

Matrix B =

[tex]\begin{bmatrix} 1 & 2 & 3 \\2 & 3 & 4 \end{bmatrix}[/tex]

These matrices are row equivalent because adding the first row of Matrix A to the second row of Matrix B yields Matrix A. To show this mathematically, let row 1 of Matrix A be represented as r1, and row 2 of Matrix B be represented as r2. We can then say that r2 + r1 =

[tex]\begin{bmatrix} 1 & 2 & 3 \\6 & 8 & 10 \end{bmatrix}[/tex]

which is equal to Matrix A.

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Answer:

49.5°

Step-by-step explanation:

Draw a line b/w B and D, this will "cut" the angles of both down the exact middle making it much easier to work with now that you have 2 separate triangles

For example, angle A remains 36° but angle B becomes 54° and angle D becomes 76.5°. Now that you have B and D, just subtract 180 from both to get your C value. 180° - 54° - 76.5° = 49.5°

The values of a and b  for the given equation  are 25,-25

What is Quadratic equation ?

Quadratic equation can be defined as the equation which is in the form of ax^2+bx+c = 0 .

Given ,

equation x^3 - 625 x  = 0

x^3 - 625x = 0

taking x common

x(x^2 - 625 ) = 0

x^2 - 625 = 0

(x+25 ) (x-25) = 0

It is in the form of a2-b2

hence it is equals to a+b * a-b

x = 25,-25 .

Hence, The values of a and b are 25,-25 respectively for the given equation.

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