Which is true about all quadratic equations that contain a difference of squares?


Only the value of a is a perfect square.


The value .|b|=2\sqrt(a)\sqrt(c)


The value b=0.


Only the value of c is a perfect square.

Answer: 27%

Explantion:

1026/3800 =x/100

cross mulitply and get 102600 then divid both sides by 3800.  

Answer:

27

Step-by-step explanation:

r

This \(4x^2 - 12x + 9\) factors into \((2x - 3)^2\), and is thus a perfect square trinomial.

A perfect square is a number system that can be expressed as the

square of a given number from the same system.

Trinomial \(Ax^2 + Bx + C\) is a perfect square if

A > 0

C > 0

B = ±2√A√C

1. \(36b^2 - 24b - 16\)

C < 0

2. \(4a^2 - 10a + 25\)

2√A√C = 2×2×5

              = 20,

B = −10

3. \(16x^2 + 24x - 9\)

not a perfect square,

C < 0

4. \(4x^2- 12x + 9\)

perfect square

A>0,

C>0,

2√A√C = 2×2×3

-B = 12

= \((2x - 3)^2\)

Thus,  \(4x^2- 12x + 9\) the polynomial is a perfect square trinomial.

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Answer:

The graphs are very blurry, here is the image of the correct answer.

Step-by-step explanation:

Answer:

This is his alt! Please give other person brainliest!

Step-by-step explanation:

The measurement that could be a surface area measure is D. 27.9 mm². The unit "mm²" represents square millimeters, which is a measurement of surface area.

A surface area is the measurement of the outside area of an object or shape.

A surface area usually measures the surfaces of an object like the sides, top, and bottom.  

It is measured in square units like square inches or square meters.

It is an important concept that is used in different areas like geometry (like a cone, cylinder, rectangular prism, etc.), physics, and engineering.

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Answer:

3 - x/12

Step-by-step explanation:

follow the steps in the sentence

Answer:

yes you are correct :)

Step-by-step explanation:

Answer:

\(P(x < 7) = 0.383\)

Step-by-step explanation:

Given

See attachment for plot

Required

Determine the probability that few than 7 boxes will be needed.

This is represented as:

\(P(x < 7)\)

And the solution is:

\(P(x < 7) = P(x = 4) + P(x = 5) + P(x = 6)\)

Each probability is calculated by dividing the number of dots by the total dots.

So, we have:

\(P(x < 7) = \frac{n(x = 4) + n(x = 5) + n(x = 6)}{Total}\)

From the attached, the formula becomes:

\(P(x < 7) = \frac{4 + 6 + 3}{4+6+3+4+4+6+3+2+1+2+0+1}\)

\(P(x < 7) = \frac{13}{36}\)

\(P(x < 7) = 0.361\)

In fact, if we knew that 64 = 8 sqrt 64 = pm 8 64 = 8, then x would no longer be a function and would instead be a relationship, causing the graph to be repeated twice with the value 64. (en 8 y -8).

For instance, the 64-bit number, which is written as 4, is 4, since 64. Additionally, it is the length of a 64-volume cube's arista.

What our community finds fascinating. La raiz sexta es 2 because cuando dividimos 64/2 obtenemos un resultado especfico and cuando multiplicamos seis veces dos obtenemos 64.

conversation of 64 into binary

Binary value for 64 is 1000000. In a binary number system, we only utilize the digits 0 and 1, as opposed to the decimal number system, which uses the numbers 0 to 9 to express a number (bits).

= \(64_{10}\) = \(1000000_{2}\)

here, the binary of \(64_{2} = 1000000_{2}\)

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Step-by-step explanation:

so from this, I think the difference is 207.84 m

:)

Answer:

(5,4)

Step-by-step explanation:

To solve a system of equations by substitution, you need to solve one of the equations for one variable (either x or y). In this case, we can solve the second equation for x: x=2y-3. Then substitute this expression into the first equation and solve for y: 5(2y-3)-y=21. Solving for y gives us y=4. Substitute this value back into the second equation and solve for x: x=2(4)-3=5. Therefore, the solution is (5,4).

yw;)

two angles that add up to 90 degrees are called complementary angles.

Answer:

b) $640

Step-by-step explanation:

Competitor's price  = $800

Price, 20% below of competitor's:

Correct answer choice is b) $640

Sin2x sin4x sin6x/cos2x cos4x cos6x = tan4x.

Trigonometric functions are functions that relate the angles of a triangle to the lengths of its sides. They are commonly used in mathematics to solve problems involving angles, distances, and height. The most commonly used trigonometric functions are sine, cosine, and tangent.

Let theta=x. Then, sin2x sin4x sin6x/cos2x cos4x cos6x= tan4x.

Using the identities of trigonometric functions, we can expand the left hand side of the equation as:

(sin2x)(sin2x×sin2x) (sin2x×sin2x*sin2x) / (cos2x)(cos2x×cos2x) (cos2x×cos2x×cos2x)

= (sin2x)((1-cos2x)×(1-cos2x)) ((1-cos2x)×(1-cos2x)×(1-cos2x)) / (cos2x)((1+cos2x)×(1+cos2x)) ((1+cos2x)×(1+cos2x)×(1+cos2x))

= (sin2x)(1-2cos2x+cos4x) (1-3cos2x+3cos4x-cos6x) / (cos2x)(1+2cos2x+cos4x) (1+3cos2x+3cos4x+cos6x)

By simplifying the equation, we get:

= (sin2x)(1-2cos2x+cos4x)(1-3cos2x+3cos4x-cos6x) / (cos2x)(1+2cos2x+cos4x)(1+3cos2x+3cos4x+cos6x)=

=sin2x (1-2cos2x+cos4x) / (cos2x)(1+2cos2x+cos4x)
= sin2x / cos2x - 2sin2x / (cos2x)(1+2cos2x+cos4x)
= tan2x - 2tan2x / (1+2cos2x+cos4x)
= tan2x (1 - 2 / (1+2cos2x+cos4x))
= tan2x (1+2cos2x+cos4x - 2) / (1+2cos2x+cos4x)
= tan2x (2cos2x + cos4x - 2) / (1+2cos2x+cos4x)
= tan2x (2cos2x + cos4x - 2) / (1+2cos2x+cos4x)
= tan4x
Therefore, sin2x sin4x sin6x/cos2x cos4x cos6x = tan4x.

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Use the Chinese remainder theorem.

Start with x = 3×5 + 2×7 = 15 + 14 = 29. Now,

• 29 ≡ 15 ≡ 1 (mod7)

• 29 ≡ 14 ≡ 4 (mod5)

Adjust for this by multiplying the first term in x by 3, and the second term by 3 (because 4×3 ≡ 12 ≡ 2 (mod5)).

So now x = 3×5×3 + 2×7×3 = 45 + 42 = 87, and

• 87 ≡ 45 ≡ 3 (mod7)

• 87 ≡ 42 ≡ 2 (mod5)

The CRT then says that x ≡ 87 (mod(7×5)) ≡ 87 (mod35), which is to say any number x = 87 + 35n satisfies both congruences (where n is any integer).

So there are 3 possible 2-digit numbers that work: {17, 52, 87}.

To confirm:

• 17 ≡ 15 + 2 ≡ 2 (mod5) and 17 ≡ 14 + 3 ≡ 3 (mod7)

• 52 ≡ 50 + 2 ≡ 2 (mod5) and 52 ≡ 49 + 3 ≡ 3 (mod7)

• 87 ≡ 85 + 2 ≡ 2 (mod5) and 87 ≡ 84 + 3 ≡ 3 (mod7)

Hello,

Let 's  n the number of sides,

R the radius of the circonscrit circle,

c the side of the polygon (c like côté)

Angle in the center is 360/n and its half is 180/n

(c/2)/R=sin(180/n)

Inside angles are (180-360/n)/2 = 90-180/n (°)

Answer: i think this is the same thing https://brainly.com/question/28965695?referrer=searchResults

if it is then theres ur answer

Step-by-step explanation:

Expressions that use the inequality symbols to compare two linear expressions are known as linear inequalities.

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Given statement :

Jayson planted 3 rows of seedlings in pots. Each row had 12 seedlings.

now, let's Answer the questions asked :

1. How many seedlings did he planted in all ?

2. What did Jayson plant in pots ?

3. How many rows of seedlings are there ?

4. How many seedlings does each row have ?

5. What is asked in the problem ?

6. How can we mentally find the answer to the problem ?

that is :

Answer:

1. C,D

2. B,C,D

3. E

4.D

5.A,B,C,D

6.D

7.C,D

8.E

Step-by-step explanation:

Hope this helps ;)

the vector equation for the line segment from (3, -4, 4) to (7, 2, 3) is:

r = <3, -4, 4> + t<4, 6, -1>

We can find a vector equation for the line segment by first finding the direction vector of the line segment, and then using it to write the equation in vector form.

The direction vector of the line segment is the difference between the two endpoints:

d = <7, 2, 3> - <3, -4, 4> = <4, 6, -1>

To write the vector equation in terms of the parameter t, we can use the parametric form of the equation of a line:

r = r_0 + td

where r is the position vector of a point on the line, r_0 is the position vector of a known point on the line (in this case, (3, -4, 4)), t is a scalar parameter, and d is the direction vector we just found.

Substituting the values we know, we get:

r = <3, -4, 4> + t<4, 6, -1>

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Answer:

1/30 in fraction form.

0.033333333....

Step-by-step explanation:

Heidi arrived at each step by applying mathematical operations and simplifications to the equation, ultimately reaching the solution.

Step 1: 3(x + 4)² = 2(5(x - 4))

Justification: This step represents the initial equation given.

Step 2: 3x + 12² = 10x - 40

Justification: The distributive property is applied, multiplying 3 with both terms inside the parentheses, and multiplying 2 with both terms inside the parentheses.

Step 3: 3x + 144 = 10x - 40

Justification: The square of 12 (12²) is calculated, resulting in 144.

Step 4: 14 = 2x - 18

Justification: The constant terms (-40 and -18) are combined to simplify the equation.

Step 5: 32 = 2x

Justification: The variable term (10x and 2x) is combined to simplify the equation.

Step 6: 16 = x

Justification: The equation is solved by dividing both sides by 2 to isolate the variable x. The resulting value is 16. (Note: Step 6 is not provided, but it is required to solve for x.)

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Answer:

First, We'll take two numbers as 'x' and 'y', and their sum is given as 21 i.e. x + y = 21 .  3/4th of 'x'  and  2/3rd of 'y' when added gives 15 i.e.

(3/4)x + (2/3)y = 15. Now, we've got two equations and we'll solve them to get the value of x and y which will be the two numbers.

Step-by-step explanation:

let,

   first number = x

   second number = y

then ,   x + y = 21  

according to the question,

       (3/4)x + (2/3)y = 15

Now, solve these equations :

on solving, we get :

        x = 12 & y = 9

Hence, the two numbers are 12 and 9.

The direction in which the maximum rate of change of f occurs at the point (5, 6, -1) is approximately (-0.17, -0.11, -0.98).

To find the maximum rate of change of the function f at the given point (5, 6, -1) and the direction in which it occurs, we can calculate the gradient of f at that point.

The gradient vector represents the direction of maximum increase of the function, and its magnitude represents the rate of change in that direction.

The gradient vector (∇f) of f(x, y, z) = (8x + 5y)/z can be found by taking the partial derivatives with respect to each variable:

∂f/∂x = 8/z

∂f/∂y = 5/z

∂f/∂z = -(8x + 5y)/z^2

Evaluated at the point (5, 6, -1), we have:

∂f/∂x = 8/(-1) = -8

∂f/∂y = 5/(-1) = -5

∂f/∂z = -((8(5) + 5(6))/(-1)^2) = -46

So, the gradient vector (∇f) at the point (5, 6, -1) is (-8, -5, -46).

The maximum rate of change of f at this point is given by the magnitude of the gradient vector:

|∇f| = √((-8)^2 + (-5)^2 + (-46)^2) = √(64 + 25 + 2116) = √2205 = 47.

Therefore, the maximum rate of change of f at the point (5, 6, -1) is 47.

To determine the direction in which this maximum rate of change occurs, we normalize the gradient vector by dividing it by its magnitude:

Direction vector = (∇f) / |∇f| = (-8/47, -5/47, -46/47).

Hence, the direction in which the maximum rate of change of f occurs at the point (5, 6, -1) is approximately (-0.17, -0.11, -0.98).

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Answer:

  9.08

Step-by-step explanation:

To find the predicted value of y, put the x-value where x is in the equation and do the arithmetic.

  \(\hat{y}=134.63-2.79x\qquad\text{given}\\\\\hat{y}=134.63-2.79(45) = 134.63-125.55\qquad\text{use 45 for x}\\\\\boxed{\hat{y}=9.08}\qquad\text{simplify}\)

Answer:

2080

Step-by-step explanation:

that's the answer i think Good luck :)

The recursion that models the dynamics of drug concentration is: ct+1 = (1 - k) * ct + a.

This equation describes how the drug concentration in the bloodstream changes over time. At each time step, the concentration of the drug in the bloodstream is updated by adding the concentration of the drug that is administered (a) and subtracting the fraction of the drug that is metabolized (k * ct). This updated concentration is then used as the starting concentration for the next time step.

The value of k is typically a constant that is specific to the drug being administered and the metabolic rate of the patient. The value of a can vary depending on the dosage and frequency of drug administration. The recursion can be used to model the concentration of the drug over time, which is important for determining the effectiveness and potential side effects of the drug.

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Answer:

\( m \angle \: 3 = 94 \degree\)

Step-by-step explanation:

\(m \angle \: 3 + 86 \degree = 180 \degree \\(linear \: pair \: \angle s) \\ \\ m \angle \: 3 = 180 \degree - 86 \degree \\ \\ m \angle \: 3 = 94 \degree \\ \\ \)

Answer:

m(x)=1.75

m(10)= 10x / 17.5

17.5

Step-by-step explanation: