PLS HELP ASAP ILL GIVE BRAINLKEST

Answer:

3.375 or 3 3/8

Step-by-step explanation:

divide 2 1/4 to get 1 1/8 or 1.125 then multiply by 3 to get 3.375 or 3 3/8

Answer:

Y= -2

Step-by-step explanation:

3y+5=(2-3)

3y+5=-1

3y=-5-1

y= -6÷3

y= -2

Answer:

16/81

Step-by-step explanation:

(2/3)^4  = (2/3)*(2/3)*(2/3)*(2/3)

             = 16/81

\(\\ \rm\rightarrowtail -1/4+3/4a=-7/4a-1\)

\(\\ \rm\rightarrowtail (3/4+7/4)a=-1+1/4\)

\(\\ \rm\rightarrowtail 10/4a=-3/4\)

\(\\ \rm\rightarrowtail 10a=-3\)

\(\\ \rm\rightarrowtail a=-0.3\)

The  line at the coffee shop during rush hour is 15 people long.

Given:

- 5 people arrive at the coffee shop each minute.

- Each person has to wait for 3 minutes to be served.

Since 5 people arrive each minute,  the rate of people entering the line is 5 people/minute.

Now, Each person has to wait for 3 minutes to be served.

So, Average length of line = Rate of people entering * Time for a person to be served

Average length of line = 5 people/minute * 3 minutes

Average length of line = 15 people

Therefore, on average, the line at the coffee shop during rush hour is 15 people long.

Learn more about Unitary Method here:

https://brainly.com/question/28276953

#SPJ4

To show that the function \(B: \mathbb{R}^2 \times \mathbb{R}^2 \to \mathbb{R}\), given by \(B((x_1, y_1), (x_2, y_2)) = ax_1y_1 + bx_2y_1 + cx_1y_2 + dy_2\), is negative definite, we need to prove that it satisfies two conditions:

For any non-zero vector\(v = (x, y) \in \mathbb{R}^2, B(v, v) < 0\).

The determinant of the matrix formed by the coefficients of B is positive: \(ac - b^2 > 0\).

Let's start with the first condition:

For \(v = (x, y) \in \mathbb{R}^2, B(v, v) = ax^2 + bxy + cxy + dy^2 = (a + c)x^2 + (b + d)xy + dy^2\).

Since we want B(v, v) to be negative for any non-zero vector v, the coefficient of \(x^2 (a + c)\) should be negative, and the determinant of the quadratic term \((b + d)^2 - 4ad\) should be negative as well.

Therefore, we have the following conditions:

\(a + c < 0 (1)\\\\(b + d)^2 - 4ad < 0 (2)\)

Now, let's move to the second condition:

We are given that B is negative definite, so we can assume that a, c, d ≠ 0 to avoid any degenerate cases.

To determine the sign of \(ac - b^2\), we can consider the determinant of the matrix formed by the coefficients:

\(\begin{bmatrix}a & b \\c & d \\\end{bmatrix}\)

The determinant is ad - bc, and for B to be negative definite, we want this determinant to be positive:

ad - bc > 0 (3)

Now, let's combine the conditions (1), (2), and (3):

From condition (1), we have a + c < 0, which implies c < -a.

From condition (2), we have\((b + d)^2 - 4ad < 0\), which implies \((b + d)^2 < 4ad\).

Now, let's multiply (1) by d and (2) by -c:

\(-d(a + c) > 0 (4)\\\\(c^2 - 4ac)d > 0 (5)\)

Adding (4) and (5), we get:

\(c^2 - 4ac - d(a + c) > 0\)

Rearranging terms, we have:

\(c^2 - 4ac - d(a + c) + 2ac - 2ac > 0\\\\c^2 - 2ac - d(a + c) + 2ac > 0\\\\(c^2 - 2ac) - (d(a + c) - 2ac) > 0\\\\c^2 - 2ac - (d - 2a)(a + c) > 0\)

Now, since c < -a, we have c + a < 0, which implies a + c < 0. Therefore, (a + c) is negative.

So, we can rewrite the inequality as:

\(c^2 - 2ac + (2a - d)(a + c) > 0\)

Since (2a - d) is negative, (a + c) is negative, and a < 0, we can conclude that:

\(ac - b^2 > 0.\)

Therefore, we have shown that B is negative definite if a < 0 and \(ac - b^2 > 0\).

Please note that in the given expression, there is a slight difference in the notation used (axıyı instead of \(ax_1y_1\)), but the approach and conclusion remain the same.

To know more about Expression visit-

brainly.com/question/14083225

#SPJ11

Answer:

A

Step-by-step explanation:

40% = 40/100 = 4/10 = 2/5

2/5 * 2/5 = 4/25 = 0.16

Answer:

1.) positive

2.) negative

3.) zero

4.) undefined

5.) zero

6.) positive

7.) positive

8.) undefined

9.) negative

Answer:

(B)136

Step-by-step explanation:

Edg 2020 your welcome luv <3

Answer:

(B)136

Step-by-step explanation:

Answer: nonagon

Step-by-step explanation: quadrilaterals: a shape that has four sides

hexagon: a shape with 6 sides

pentagon: a shape with 5 sides

nonagon: a shape with 9 sides

So the answer is D

Answer:

Step-by-step explanation:

Equation: w - 6*12 = 2/3 * w

w - 72 = 2/3*w               Subtract w from both sides

- 72 = 2/3 w - w

-72 = - 1/3 w

216 = w

Answer:

Step-by-step explanation:

Simplifying

(2x + -3)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(x + -4) = 0

Reorder the terms:

(-3 + 2x)(-4 + x) = 0

Multiply (-3 + 2x) * (-4 + x)

(-3(-4 + x) + 2x * (-4 + x)) = 0

((-4 * -3 + x * -3) + 2x * (-4 + x)) = 0

((12 + -3x) + 2x * (-4 + x)) = 0

(12 + -3x + (-4 * 2x + x * 2x)) = 0

(12 + -3x + (-8x + 2x2)) = 0

Combine like terms: -3x + -8x = -11x

(12 + -11x + 2x2) = 0

Solving

12 + -11x + 2x2 = 0

Solving for variable 'x'.

Factor a trinomial.

(3 + -2x)(4 + -1x) = 0

Subproblem 1

Set the factor '(3 + -2x)' equal to zero and attempt to solve:

Simplifying

3 + -2x = 0

Solving

3 + -2x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-3' to each side of the equation.

3 + -3 + -2x = 0 + -3

Combine like terms: 3 + -3 = 0

0 + -2x = 0 + -3

-2x = 0 + -3

Combine like terms: 0 + -3 = -3

-2x = -3

Divide each side by '-2'.

x = 1.5

Simplifying

x = 1.5

Subproblem 2

Set the factor '(4 + -1x)' equal to zero and attempt to solve:

Simplifying

4 + -1x = 0

Solving

4 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.

4 + -4 + -1x = 0 + -4

Combine like terms: 4 + -4 = 0

0 + -1x = 0 + -4

-1x = 0 + -4

Combine like terms: 0 + -4 = -4

-1x = -4

Divide each side by '-1'.

x = 4

Simplifying

x = 4

Solution

x = {1.5, 4}

Answer:

\(2x^2+5x-12=0\)

Step-by-step explanation:

Algebra

To expand the given equation

\((2x-3)(x+4)=0\)

we'll use the distributive property by multiplying each term of the first binomial by each term of the second binomial as follows:

\(2x^2+8x-3x-12=0\)

Rearranging and simplifying:

\(\mathbf{2x^2+5x-12=0}\)

Answer:

Step-by-step explanation:

51 feet / 1.5 = 34 bags needed minimum

But trini needs more than 51 bags so:

X>34 is the answer

Answer:

3.9 * 10^-2

Step-by-step explanation:

We need a number between 0 and 10, so we need to multiply.

0.039 * 10 = 0.39

0.39 * 10 = 3.9

Since 0.039 is less than 0, we are going to have a negative exponent.

3.9 * 10^-2

Best of Luck!

Answer:

False

Step-by-step explanation:

Lines that intersect at right angles are called parallel. False

They are called intersecting lines.

Answer:

False

Step-by-step explanation:

This is false, lines that are always the same distance apart and never intersect are paralle. Line that intersect at a right angle are called perpendicular. See the image.

Answer:

  (-5x +y +1)(5x -y +1)

Step-by-step explanation:

You want the factored form of 1-25x²+10xy-y².

We recognize the last three terms as those of a perfect square trinomial:

  25x² -10xy +y² = (5x -y)²

Using this form for the last three terms, we see the given expression is the difference of squares. It can be factored as such.

  1 -(5x -y)² = (1 -(5x -y)(1 +5x -y)

  = (-5x +y +1)(5x -y +1)

__

Additional comment

The forms we used here are ...

  (a -b)² = a² -2ab +b²

  a² -b² = (a -b)(a +b)

<95141404393>

Answer:

i. x and a are increasing while y and b are reducing

The largest angle in the pentagon with consecutive even interior angle sizes is 112 degrees.

Let's assume the smallest interior angle of the pentagon is x degrees. Since the angles are consecutive even numbers, the other four angles can be expressed as x + 2, x + 4, x + 6, and x + 8 degrees.

The sum of the interior angles of a pentagon can be calculated using the formula: (n - 2) * 180 degrees, where n is the number of sides of the polygon. For a pentagon, the sum of the interior angles is (5 - 2) * 180 = 3 * 180 = 540 degrees.

Now, let's add up the five angles of the pentagon:

x + (x + 2) + (x + 4) + (x + 6) + (x + 8) = 540

Simplifying the equation:

5x + 20 = 540

5x = 540 - 20

5x = 520

x = 520 / 5

x = 104

So, the smallest interior angle, x, is 104 degrees. The largest interior angle is x + 8 = 104 + 8 = 112 degrees.

for more questions on pentagon

https://brainly.com/question/11759904

#SPJ8

The statement that the sum of any rational number and any irrational number will always be an irrational number is true.

The sum of any rational number and any irrational number will always be an irrational number. To prove this, let's consider a rational number, represented as a/b, where a and b are integers and b is not equal to 0. Additionally, let's consider an irrational number, represented as √2. When we add the rational number a/b and the irrational number √2, the result will be a + (√2)b, which is a combination of a rational number and an irrational number.

Since irrational numbers cannot be expressed as a ratio of two integers, the sum a + (√2)b cannot be simplified to a rational number. Thus, it is an irrational number. Therefore, the statement that the sum of any rational number and any irrational number will always be an irrational number is true.

To learn more about rational number click here: brainly.com/question/19161857

#SPJ11

Average speed for the whole journey = 53.67 miles per hour.

What is Speed?

A scalar quantity, speed is defined as the size of the change in an object's location over time or the size of the change in an object's position per unit of time.

The Average speed:-

"The average speed of any object is the total distance traveled by that object divided by the total time elapsed to cover the said distance".

= total distance/total time

According  to the Question

We have;

-------> ALEX drove for 3 hours at a rate of 60 miles per hour.

-------> and ALEX drove for 2 hours at a rate of 45 miles per hour.

We know that;

speed = distance/ time

Now we can write it as;

distance = speed *time

Consider the first statement of the Question;

-------> John drove for 3 hours at a rate of 60 miles per hour.

Here, speed = 60 miles per hour.

Time = 3 hours.

Putting in the above then we get;

distance = 60*3

distance =180

Consider the second statement of the Question;

-------> John drove for 2 hours at a rate of 45 miles per hour.

Here, speed = 45 miles per hour.

Time = 2 hours.

Putting in the above then we get;

distance = 45*2

distance =90

-----> Now find the Average speed of John.

We have;

The distance in the first part;

miles. at time 3 hours.

The distance in the second part;

miles. at time 2 hours.

We have;

The average speed = 53.67 miles per hour

To learn more about Average visit:

brainly.com/question/2906096

#SPJ4

Answer:

Step-by-step explanation:

58

The survey ratings provide valuable feedback for drivers who are looking for quality tires for their vehicles. These ratings can give insight on steering responsiveness, how quickly a tire wears, and overall customer satisfaction. Drivers can also see how their tire of choice stacks up against other tires, making it easier to make an informed decision when shopping for tires.

The Tire Rack is America’s leading online distributor of tires and wheels. They conduct extensive testing to ensure that customers are provided with the most suitable tires for their vehicles, driving styles, and driving conditions. They also use an independent consumer survey to help drivers gain insight on long-term tire experiences.

The following data show survey ratings on a 1-10 scale, with 10 being the highest rating, of 18 maximum performance summer tires, as of February 3, 2009 (Tire Rack website). The variables are Steering (steering responsiveness), Tread Wear (quickness of wear), and Buy Again (overall tire satisfaction and desire to purchase the same tire again). The Yokohama Aegis LS4 has a Steering rating of 7.9, Tread Wear rating of 7, and Buy Again rating of 7.1. The Dunlop SP20 FE has a Steering rating of 5.7, Tread Wear rating of 5, and Buy Again rating of 3.3.

for such more questions on tire satisfaction

https://brainly.com/question/28705993

#SPJ11

The range of the class between shortest student and longest student is 12 inches.

Range is the difference between highest and lowest possible values.

R= (higest value)-(lowest value)

Tallest student= 63 inches

Shortest student= 51 inches

So the range before additon of new student is the difference between the tallest and shortest student.

R= 63(tallest student) - 51(shortest student) = 12inches

Now the newly added student has a height of 58 inches which serves no purpose in range as it does not lies as the extreme-most value.

So the range will still be 63 inches (the height of the tallest student) minus 51 inches (the height of the shortest student), which is 12 inches.

Learn more about finding  range : https://brainly.com/question/26242034

#SPJ11

Answer: The equation X + y = -5 represents a straight line in a two-dimensional plane. To determine whether a specific point (X, y) is a solution of the equation, you can substitute the values of X and y into the equation and see if it holds true. If the equation is satisfied, then the point (X, y) is a solution. If the equation is not satisfied, then the point (X, y) is not a solution.

For example, if X = 2 and y = -7, then the equation becomes:

2 + (-7) = -5

-5 = -5

Since the equation holds true, the point (2, -7) is a solution of the equation X + y = -5.

Step-by-step explanation:

Answer:

4.5 hours

Step-by-step explanation:

8:2h = 18:x

8x = 18×2h

x = 36h/8

x = 4.5

hope this helps :)

x (x - 1) (x + 1) = \(x^{3}\)- x

Distribute

1. (x + 1) \(x^{2}\) - x (x + 1) = \(x^{3}\) - x

2. Distribute

   (x + 1) \(x^{2}\) - x (x + 1) = \(x^{3}\) - x

    \(x^{3 }\) + 1 \(x^{2}\) - x (x + 1) = \(x^{3 }\) - x

3. Multiply by 1

   \(x^{3 }\) + 1 \(x^{2}\) - x (x + 1) = \(x^{3 }\) - x

   \(x^{3 }\) + \(x^{2}\) - x (x + 1) = \(x^{3 }\) - x

4. Distribute

  \(x^{3 }\) + \(x^{2}\) - x (x + 1) = \(x^{3 }\) - x

  \(x^{3 }\) + \(x^{2}\) - (\(x^{2}\) + x) = \(x^{3 }\) - x

5. Distribute

   \(x^{3 }\) + \(x^{2}\) - (\(x^{2}\) + x) = \(x^{3 }\) - x

   \(x^{3 }\) + \(x^{2}\) - \(x^{2}\) - x = \(x^{3 }\) - x

6. Combine like terms

   \(x^{3 }\) + \(x^{2}\) - \(x^{2}\) - x =  \(x^{3 }\)- x

   \(x^{3 }\) - x = \(x^{3 }\) - x

7. Move terms to the left side

   \(x^{3 }\) - x = \(x^{3 }\) - x

  \(x^{3 }\) - x - (\(x^{3 }\) - x) = 0

8. Distribute

 \(x^{3 }\) - x - (\(x^{3 }\) - x) = 0

 \(x^{3 }\) - x - \(x^{3 }\) + x = 0

9. Combine like terms

  \(x^{3 }\) - x - \(x^{3 }\) + x = 0

   - x + x = 0

10. Combine like terms

    - x + x = 0

     0 = 0

To know more about like terms

https://brainly.com/question/3750096

Answer:

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

In triangles MNP and RSP, if there are two pairs of corresponding angles that are congruent or equal, it means that triangle MNP is similar to triangle RSP. The corresponding angles in both triangles are....

P corresponding to P

M corresponding to R

N corresponding to S

Therefore, the missing piece of information that Javier needs to prove that triangle MNP is similar to triangle RSP by the Angle-Angle Similarity Postulate is....

A. Javier needs to know the measure of angle P.