help
Use the dot product to find [v] when v =(-2,-1)


A.-1

b.-3

c;sqr5

dsqr3

For this case we have the following formula:

[tex]nP_ {r} = \frac {n!} {(n-r)!}[/tex]

Where:

P: It is the number of permutations

n: It is the number of objects

r: It is the number of selected objects

According to the data we have to:

[tex]n = 12\\r = 5[/tex]

Substituting:

[tex]12P_ {5} = \frac {12!} {(12-5)!} = \frac {12 * 11 * 10 * 9 * 8 * 7!} {7!} = 12 * 11 * 10 * 9 * 8 = 95,040[/tex]

Finally, the number of permutations is 95,040

ANswer:

95,040

Answer:

Option B.

Step-by-step explanation:

Cecelia studied for the SAT for 20 minutes every day in the first week, 30 minutes in the 2nd week, 40 minutes in 3rd week and 50 minutes in 5th week.

So the sequence formed is 20, 30, 40, 50

This sequence has a common difference of [tex]T_{2}-T_{1}=30-20=10[/tex]

[tex]T_{3}-T_{2}=40-30=10[/tex]

Therefore, this sequence is an arithmetic sequence or linear sequence.

Christopher studied for the SAT for 5 minutes every day in the first week, 10 minutes in 2nd week, 20 minutes in 3rd, 40 minutes in 4th week.

Sequence formed is 5, 10, 20, 40.

It's an exponential or geometric sequence which has a common ratio

r = [tex]\frac{T_{2} }{T_{1}}=\frac{T_{3} }{T_{2}}[/tex]

 = [tex]\frac{20}{10}=2[/tex]

Therefore, Option B will be the answer.

Answer:

The answer is B

Answer:

[tex]\frac{\sqrt{x} }{2x}[/tex]

Step-by-step explanation:

Rationalize the denominator first (keep in mind we are NOT solving this because there is no equals sign here.  We are merely simplifying.)

[tex]\frac{\sqrt{5x} }{x\sqrt{20} } *\frac{\sqrt{20} }{\sqrt{20} } =\frac{\sqrt{100x} }{20x}[/tex]

Now simplify by taking the square root of 100 to get:

[tex]\frac{10\sqrt{x} }{20x}[/tex]

Divide numerator and denomiator by 10 to get:

[tex]\frac{\sqrt{x} }{2x}[/tex]

Answer:

Probably the one you have selected.

Step-by-step explanation:

This is a bad question because the domain of f(x) is not restricted, but the domain of its inverse is restricted to x >= 4. I would say you guessed correctly.

Answer:

The answer is C. The domain of f(x) is restricted to x is less than or equal to 0, and the domain of F^-1(x) is restricted to x is greater than or equal to 0.

Step-by-step explanation:

I got it right on edgenuity. :)

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

[tex]f(x)=2(3)^{x}[/tex]

This is a exponential function of the form

[tex]y=a(b)^{x}[/tex]

where

a is the initial value (a=2)

b is the base (b=3)

r is the rate of change

b=1+r

1+r=3

r=3-1=2

r=200%

using a graphing tool

The graph in the attached figure

Answer:

  D. similar; proportional; congruent

Step-by-step explanation:

Any pair of figures is similar if their corresponding sides are proportional and their corresponding angles are congruent. That is the meaning of similarity.

Answer:

D. similar; proportional; congruent

Step-by-step explanation:

Answer:

tbh bro i need help to

Step-by-step explanation:

ANSWER

[tex]x = 54\degree[/tex]

EXPLANATION

The diameter meets the tangent to the circle at right angles.

The sum of interior angles of a triangle is 180°.

This implies that

[tex]x + 36 \degree + 90 \degree = 180 \degree[/tex]

Group the constant terms

[tex]x = 180 \degree - 36 \degree - 90 \degree[/tex]

We simplify to obtain,

[tex]x = 54\degree[/tex]

Answer:

Step-by-step explanation:

The first question is asking you how many visitors there were, using the function model provided, when x = 0.  Filling that in gives you:

[tex]y=18,582(.90)^0[/tex]

Anything to the 0 power = 1, so

y = 18,582(1) and

y = 18,582

The second question is asking you how many visitors there were on the 9th weekend, when x = 9:

[tex]y=18,582(.90)^9[/tex] and

[tex]y=18,582(.387420489)[/tex] so

y = 7199

The last question is asking on what weekend (unknown x) are there

y = 15.051 visitors.  That requires using a log to solve for x.  Set it up first:

[tex]15,051=18,582(.90)^x[/tex]

Start by dividing both sides by 18,582 to get:

[tex].8099773975=(.90)^x[/tex]

Now we need to take the log of both sides to get that x out from its exponential position.  By taking the log of the right side, we are given the ability to bring the x down in front:

log(.8099773975) = x log(.90)

Now divide both sides by log(.90) to get

x = 2.000

That means that on the second weekend, there were approximately 15,051 visitors.

Answer:

-9x² + 25

Step-by-step explanation:

To solve, use FOIL. FOIL:

First

Outside

Inside

Last

Solve "First":

(3x)(-3x) = -9x²

Solve "Outside":

(3x)(-5) = -15x

Solve "Inside":

(-5)(-3x) = +15x

Solve "Last":

(-5)(-5) = +25

Combine like terms:

-9x² - 15x + 15x + 25

-9x² (-15x + 15x) + 25

-9x² + 25

-9x² + 25 is your answer.

~

Answer:

[tex]3x-4y=-40[/tex]

Step-by-step explanation:

The standard form of a linear equation is  [tex]ax+by=c[/tex].

The given line has equation:

[tex]y-4=\frac{3}{4}(x+8)[/tex]

This is the point-slope form of the given line.

To find the standard form, we clear the fraction

[tex]4y-16=3(x+8)[/tex]

We expand the parenthesis now to get:

[tex]4y-16=3x+24[/tex]

We group the variables on the LHS and the constants on the RHS.

[tex]4y-3x=24+16[/tex]

[tex]-3x+4y=40[/tex]

Multiply through by -1

[tex]3x-4y=-40[/tex]

This is of the form: [tex]ax+by=c[/tex].

The parenthesis denote multiplication. Also, a negative times a positive will always be a negative and visa-versa.

-28(16) = -448

Answer: A. -448

Answer:

  (6, -2)

Step-by-step explanation:

To get to x=1 from x=-2, you must add 3 to the x-coordinate. Only one answer choice has an x-coordinate that is 3 more than that of the given point:

  3 + 3 = 6

The image point is (6, -2).

_____

Check

To get from a y-coordinate of 5 to an image point y-coordinate of 1, you must subtract 4. If you subtract 4 from the y-coordinate of (3, 2), you get 2-4 = -2, the y-coordinate in the chosen answer above.

Answer:

Step-by-step explanation:

[tex]6b<36\ or\ 2b+12>6\\\\6b<36\qquad\text{divide both sides by 6}\\b<6\\\\2b+12>6\qquad\text{subtract 12 from both sides}\\2b>-6\qquad\text{divide both sides by 2}\\b>-3\\\\b<6\ or\ b>-3[/tex]

The correct option is "b > 6 or b < -3" because it represents the solutions to the compound inequality 6b < 36 or 2b + 12 > 6. The correct option is C).

Here's the explanation:

We have two inequalities to solve: 6b < 36 and 2b + 12 > 6.

For the first inequality, 6b < 36, we can divide both sides by 6: b < 6.

For the second inequality, 2b + 12 > 6, we can subtract 12 from both sides: 2b > -6. Then, dividing both sides by 2: b > -3.

Now, we need to combine the results from both inequalities. The compound inequality should include values that satisfy either of the individual inequalities.

Combining "b < 6" from the first inequality and "b > -3" from the second inequality, we get the compound inequality: b < 6 or b > -3.

So, the correct option is "b > 6 or b < -3," which represents the solutions to the compound inequality 6b < 36 or 2b + 12 > 6.

The correct option is: C: b > 6 or b < -3

For more such questions on inequality

https://brainly.com/question/30238989

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Answer:

7/x or x/7 i believe

Step-by-step explanation:

I'm relearning them so hope i helped you!

Answer:

[tex]\frac{7}{x}[/tex]

Step-by-step explanation:

Let x represent the number.

We are supposed to write an expression for our given statement.

We have been given that the quotient of 7 and a number. This means that 7 is divided by the number 'x'.

We can represent this information in an expression as:

[tex]\frac{7}{x}[/tex]

Therefore, our required expression would be [tex]\frac{7}{x}[/tex].

Answer:

  $16,000

Step-by-step explanation:

Revenue is the product of price and the number sold. Using the given relation for number sold, the revenue as a function of price is ...

  R(p) = p(-40p +1600) = -40p(p -40)

This is the equation of a quadratic that opens downward and has zeros at p=0 and p=40. The vertex is halfway between those zeros, at p=20. The revenue at this price is ...

  R(20) = -40·20(20 -40) = 16,000 . . . . dollars

Answer:

Option C. positive

Step-by-step explanation:

we know that

If the discriminant of a quadratic function is positive, then the quadratic function has two real solutions

If the discriminant of a quadratic function is zero, then the quadratic function has one real solution

If the discriminant of a quadratic function is negative, then the quadratic function has two complex solutions

In this problem

The quadratic function has two real solutions (x-intercepts)

therefore

The discriminant is positive

Answer: Option C: Positive

Step-by-step explanation: Answer for Apex

Answer:

2 out of 5 or 6 out of 15

Step-by-step explanation:

In this pattern, there is two people ordering it every five times. You can write it out as 6/15 or simplify it as 2/5 (six-fifteenths and two-fifths)

The simulated probability that a customer will order the small beverage is:

                 [tex]\dfrac{2}{5}=0.4[/tex]

The  1, 2, and 3 to represent small, medium, and large, respectively.

The simulation is as follows:

2   2   3   1   1   2   2   3   1   1    3    2   1    1    3

There are a total outcomes= 15

Also, the number of outcomes that the customer will order small beverage is: 6

( Since,  6 times such that 1 has occurred.

As 1 represent the simulation that the beverage comes in small size )

Hence, the simulated probability is:

       [tex]\dfrac{6}{15}=\dfrac{2}{5}=0.4[/tex]

Answer:

  A.  215x + 780 = 2500

Step-by-step explanation:

Multiply both sides of the equation by 100 to eliminate the decimal fractions.

  (2.15×100)x + 7.8×100 = 25×100

  215x + 780 = 2500

Answer:

Step-by-step explanation:

Lots, even if you make this a combination problem. I'm going to treat it as a permutation first and then we'll look into a combination.

52 P 5 is the same thing as a counting problem

The first card drawn is 1 of 52

The second one drawn is 1 of 51

The third one drawn is 1 of 50

The 4th one drawn is 1 of 49

The 5 one drawn is 1 of 48

The answer you should get is 311 875 200

=====================

If your calculator does this then you should put in 52P5 and it will give you the possible outcomes.  Remember the question asks you the number of outcomes not the probability.

=====================

The above number treats the order as different.

So 12345 is not the same as drawing 12354.

Those 2 sets of cards are counted as 2 not one.

I believe this to be the best answer.

======================

But if order does not matter, and you want 1 2 3 4 5 to be the same thing as  1 2 3 5 4 the problem is a combination problem. Ignoring the suits the answer is

52 C 5

which is 52 * 51 * 50 * 49 * 48 / 5! = 2598960

======================

I don't know how far into the course you are but the actual answer would have to account for the suits. This solution assumes that the actual card drawn remains upside down, that is, if it is the king of hearts, you don't know it.

Vacations are not a typical application of investors' money as they do not contribute to future profitability or growth of a business, unlike product improvement, expansion, or employee salaries.

The question asks about a typical application of investors' money which is not common. Of the options provided, vacations would not be a typical application of investor funds. Investors typically allocate capital to a business with the expectation of earning future profits.

Common expenses that may constitute investment in a firm include product improvement, expansion, and even employee salaries, as these are directly related to the operations and growth potential of the business.

Capital invested in the business is expected to generate future income and growth, through means such as buying long-term assets like machinery, building new plants, or initiating research and development projects. It's unlikely that investors would find vacations a viable investment category as it generally does not contribute to the future profitability or growth of a business enterprise.

Answer:

B. Clara incorrectly combined the r coefficients. The correctly simplified expression is 6b-3r

Step-by-step explanation:

Simplifying the expression by opening the brackets we get:

8b - 4r-2b+r

A negative coefficient multiplied by a negative coefficient results to a positive coefficient.

Combining like terms together:

8b-2b-4r+r

=6b-3r

The correct answer is A. She incorrectly combined the b coefficients. The only symbols that have an effect on a number is the symbol BEFORE the number. Thus, in 2b-r, they would separate into 2b and -r.

Using this knowledge, combine like terms the right way.

8b+2b=10b

-4r-r=-5r

The correct equation is 10b-5r

Hope this helps!

Answer:

previous address,current employer,bankruptcy and civil court case,late credit card payments.

Step-by-step explanation: you are welcome

Answer:

Step-by-step explanation:

Given information;

Which of these can we find on a credit report.

From the given options one can find following information from a credit report:

For more information visit:

https://brainly.com/question/2989702?referrer=searchResults

Answer: substitution

Step-by-step explanation:

edge 2022

Answer:

  segment PQ and segment P double prime Q double prime are congruent after the translation, but not after the dilation

Step-by-step explanation:

Translation and dilation have no effect on angles. All angles are congruent after either or both of translation and dilation.

Translation has no effect on size, so segments are congruent after translation. Dilation changes size, so segments are not congruent after dilation.

___

Comment on the problem wording

Ordinarily, the first transformation (translation) would result in figure P'Q'R', so P'Q' would be congruent to PQ. Then the second transformation (dilation) would change figure P'Q'R' to figure P''Q'' R'', which is no longer congruent to either figure P'Q'R' or figure PQR.

That is, talking about "segment P double prime Q double prime ... after the translation, but not the dilation" makes no sense, because there is no such segment. The segment that exists after the translation, but not the dilation, is segment P'Q'.

Answer:

line PQ and line P double prime Q double prime are congruent after the translation, but not after the dilation

Step-by-step explanation:

Step-by-step explanation:

The slope-intercept form of an euqtion of a line:

y = mx + b

m - slope

b - y-intercept

x = a (a - any real number)

It's the equation of a vertical line. A vertical line has an undefined slope. They also do not have a y-intercept, because they run parallel to the y axis.

Therefore given equations can not write in the slope-intercept form.

Answer:

  see below

Step-by-step explanation:

(a) the graph is symmetrical about the horizontal axis. It has a maximum value of r = 3 at θ = π.

__

(b) The graph is symmetrical about both the horizontal and the vertical axis. It has a maximum value of r = 1 at θ = 0 and θ = π. (Note this curve has subtle differences from the inner loop of the above curve.)

_____

About how

As with any graphing problem, when doing it by hand, one chooses enough points to give the general shape of the curve. In some cases, quite a few points may be required. It is often helpful to use a spreadsheet for calculating the point values. Here, we've graphed the equations using "technology"--a graphing calculator.