(-3√ -81)(-5+√ -9)+9i

Answer:

A

Step-by-step explanation:

Because if you did the math it's A

I'm 100% Sure

Answer:

EZAY it would be A i had the same question on the test and got it right. can i get brainlyest

Step-by-step explanation:

The probability of choosing a 5 and then a 6 is 1/49

From the question, we have the following parameters that can be used in our computation:

The tiles

Where we have

Total = 7

The probability of choosing a 5 and then a 6 is

P = P(5) * P(6)

So, we have

P = 1/7 * 1/7

Evaluate

P = 1/49

Hence, the probability of choosing a 5 and then a 6 is 1/49

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Question

You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. Find the probability of the compound event. Write your answer as a fraction or percent rounded to the nearest tenth. The probability of choosing a 5 and then a 6

The value of the x is 3.

What is the Exterior Angle Theorem?

If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

We have,

∠EGF = 2x + 1

∠EFG = 25

∠GEF = 10x + 2

Exterior Angle Theorem:

The measure of exterior angle = Sum of two opposite interior angles’ measure.

According to the Exterior Angle property of a triangle theorem, the sum of measures of ∠EGF and ∠EFG would be equal to the exterior angle ∠GEF.

∴ ∠EGF + ∠EFG =  ∠GEF

   2x + 1 +  25 = 10x + 2

   2x +  26 = 10x + 2

   26 - 2 = 10x - 2x

   24 = 8x

    x = 24/8

   ∴   x = 3

Hence, the value of the x is 3.

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Answer:

Base = 7

Height = 10

Area = 35

Step-by-step explanation:

Area is 35.

7 * 10 = 70

70/2 = 35

Base = 7 (Given)

Height = 10 (Given)

Answer:

base: 7 (yd)

height: 10 (yd)

area: 35 (yd²)

Step-by-step explanation:

To find the area of a triangle, multiply the base and height, then, divide the product by 2. The quotient is the area of the triangle.

\(7*10=70.\)

\(70/2=35.\)

I, therefore, believe the area of this triangle is 35 yd.

Answer:

To multiply fractions, first we simplify the fractions if they are not in lowest terms. Then we multiply the numerators of the fractions to get the new numerator, and multiply the denominators of the fractions to get the new denominator.

pls give brainliest

Answer:

Step-by-step explanation:

The only point that lies on both lines y = - 1/2x + 2 and y = 1/2x - 3 is **(-1/2, 5)**. So the answer is **C**.

To see this, we can substitute the x-coordinate of (-1/2, 5) into each equation. If we substitute x = -1/2 into the first equation, we get y = -1/2 * (-1/2) + 2 = 1/2 + 2 = 5. If we substitute x = -1/2 into the second equation, we get y = 1/2 * (-1/2) - 3 = -1/4 - 3 = -5/4.

Since both equations give us the same y-coordinate, (-1/2, 5) must lie on both lines.

The other points do not lie on both lines. For example, if we substitute x = 5 into the first equation, we get y = -1/2 * 5 + 2 = -2.5 + 2 = -0.5. However, if we substitute x = 5 into the second equation, we get y = 1/2 * 5 - 3 = 2.5 - 3 = -0.5. This shows that (5, -1/2) does not lie on either line.

Similarly, the other points do not lie on both lines. Therefore, the only point that lies on both lines is (-1/2, 5), and the answer is **C**.

Answer:

10 yd

Step-by-step explanation:

area of square = side x side

A = a^2

side a = √A = √100 = 10

for square, all sides are equal

Answer:

Option (B) y = -1/5x -4 and ( C) y = -5x +4

Step-by-step explanation:

From given graph we can clearly see that the line cuts at y axis at -4 since point will be (0,-4)

So, Only option (B) y = -1/5x -4 is satisfying the point

put y = -4 and x = 0

we get , - 4 = 0 - 4

so, -4 = - 4 point satisfied...

Check option (c) y = -5x -4

put (0,-4) since -4 = -4 point satisfied

your can easily satisfy the point and get your answer .

The equation of the line is y = (-1/5)x - 4. The correct option is B.

In mathematics, a line's slope, or gradient, is a numerical representation of its steepness and direction.

If a line passes through two points (x₁ ,y₁) and (x₂, y₂) ,

then the equation of a line is

y - y₁ = (y₂- y₁) / (x₂ - x₁) x (x - x₁)

To find the slope;

m =  (y₂- y₁) / (x₂ - x₁)

Given information:

The equation's graph passes through the two points (0, -4) and (5, -5).

To find the equation of the line passing through two points (0, -4) and (5, -5), we can use the point-slope form of the equation of a line:

y - y1 = m(x - x1)

where m is the slope of the line, and (x1, y1) is one of the given points.

First, we can find the slope of the line by using the two points:

m = (y2 - y1) / (x2 - x1)

= (-5 - (-4)) / (5 - 0)

= -1/5

Now we can choose either of the two points to substitute in the equation:

y - (-4) = (-1/5)(x - 0)

Simplifying, we get:

y + 4 = (-1/5)x

Subtracting 4 from both sides, we get:

y = (-1/5)x - 4

Therefore, the equation of the line is y = (-1/5)x - 4.

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Answer:

Step-by-step explanation:

I am using trig identities and the formula for the difference of the cos of 2 angles to solve this. I'll do the steps one at a time. It's super tricky. First I'm just going to work on simplifying the sec² part and then I'll introduce the sin²(x) - sin⁴(x) when I need it. Beginning with the identity for the difference of the cos of 2 angles, knowing that sec²(x) = \(\frac{1}{cos^2(x)}\):

\(sec^2(\frac{\pi}{2}-x)=\frac{1}{cos^2(\frac{\pi}{2}-x )}\) and expand that using the formula for the difference:

\(\frac{1}{cos(\frac{\pi}{2}-x)cos(\frac{\pi}{2}-x) }=\) \(\frac{1}{(cos\frac{\pi}{2}cos(x)+sin\frac{\pi}{2}sin(x))(cos\frac{\pi}{2}cos(x)+sin\frac{\pi}{2}sin(x)) }\) and all of that simplifies down to

\(\frac{1}{(0cos(x)+1sin(x))(0cos(x)+1sin(x))}\) which simplifies further to

\(\frac{1}{(sin(x))(sin(x))}=\frac{1}{sin^2(x)}\) Now we'll bring in the other term. This is what we have now:

\(\frac{1}{sin^2(x)}(\frac{sin^2(x)-sin^4(x)}{1})\) and distribute in to get:

\(\frac{sin^2(x)}{sin^2(x)}-\frac{sin^4(x)}{sin^2(x)}\) which simplifies to

\(1-sin^2(x)\) and that, finally, simplifies down to a simple

\(cos^2(x)\)

A family-wise inflation of error rate is the increase in the probability that one or more results of a numerous, independently (separately) conducted statistical analyses to become statistically significant, but these results can actually be attributed to random variation or measurement error.

In Statistics, a family-wise inflation of error rate is also referred to as family-wise error rate (FWER) and it can be defined as the probability of making at least one false conclusion or type I errors in numerous, separate statistical analyses or hypothesis tests.

Hence, a family-wise inflation of error rate increases the probability that one or more of the results among groups within an independent data set to be statistically significant, especially due to random variation or measurement error.

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Answer: A “The Frequency is 31 lower than expected.”

Step-by-step explanation:

The frequency is 12 fewer than expected.

Relative frequency or experimental probability is calculated from the number of times an event happens, divided by the total number of trials in an actual experiment.

The experimental relative frequency at which the coin lands heads up is \(\frac{19}{50}\) or 0.38.

If the coin were a fair one, we would expect that it had heads up 25 out of 50 times, which would be a relative frequency of 0.50.

Since this is not happening, we conclude that the coin is NOT a fair one.

Expected frequency = 0.50

Experimental relative frequency = 0.38

= 0.50 - 0.38

= 0.12 or 12 %

Hence, the frequency is 12 fewer than expected.

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The student earned a total of 6 points by correctly using definite integrals to find f(-2) and f(2), identifying the critical values and absolute minimum value of f(x) and finding f''(-5).

The student earned a total of 6 points in the problem. They earned 3 points in for using an appropriate definite integral to find f(-2), and another point for using a definite integral to find f(2). They did not earn any points.

In next part, they earned 2 points for identifying where f'(x) = 0, and identifying the absolute minimum value of f(x) at x=2. In part (d), they earned 1 point for finding f''(-5), but did not earn the second point due to a contradiction in their reasoning about the differentiability of f(x) at x=3.

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There is a 35% chance that fund A rises and fund B does not rise in price.

Probability is simply how likely something is to happen. Whenever we're unsure about the outcome of an event, we can talk about the probabilities of certain outcomes—how likely they are.

To calculate the probability that fund A rises and fund B does not rise in price, we need to multiply the probability of fund A rising (let's assume it is 50% for the sake of this example) by the probability of fund B not rising (which is 70%). So the probability would be:

0.5 (probability of fund A rising) x 0.7 (probability of fund B not rising) = 0.35 or 35%.

Therefore, there is a 35% chance that fund A rises and fund B does not rise in price.

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Answer:

720

Step-by-step explanation:

The lock requires that repetition is not allowed.

The possibles numbers are 0 - 9, that is, 10 digits.

The first number in the combination can be picked from the 10 digits.

This means that there are 10 possible choices.

The second number in the combination can now only be picked from 9 digits.

This means that there are 9 possible choices.

The third number in the combination can now only be picked from 8 digits.

This means that there are 8 possible choices.

Therefore, the number of possible outcomes in the combination is:

10 * 9 * 8 = 720 outcomes

Answer:

Step-by-step explanation:

S=pi*R^2=(area of the sector)*(360/angle of AOB)

so 22/7*9^2=99*360/angle of AOB

-> AOB=140

perimeter of circle: 2*pi*R

permiter of sector : 2*pi*140/360*R+ 2R=22+9*2=40

A recent survey that was quoted to support the news that the number of trees in the united states is increasing is a self-interest study.

From the additional research, it was found that a logging company fully funded the survey. Self-interest studies are referred to as action that stimulates personal benefits, it helps the sponsor enjoy economic or other gains from the outcomes. A logging company that fells trees and timber so, they are more interested in the number of trees, even they have an interest in directing the people of a country that depleted numbers of trees are not being by their efforts in logging. So performing such kind of survey is own self-interest.

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Answer:

sorry

Step-by-step explanation:

i dont know

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Answer:

30000 : 20000

Step-by-step explanation:

Given the ratio

\(\frac{1}{10}\) : \(\frac{1}{15}\) ( multiply both parts by 30 the LCM of 10 and 15, to clear the fractions )

= 3 : 2

sum the parts of the ratio, 3 + 2 = 5 parts

Divide the amount by 5 to find the value of 1 part of the ratio

50000 ÷ 5 = 10000 ← value of 1 part of the ratio, then

3 parts = 3 × 10000 = 30000

2 parts = 2 × 10000 = 20000

Then

50000 = 30000 : 20000 in the ratio 3 : 2

The square's area is increased by 21 square units, it becomes 100 square units and the original area of the square was 79 square units.

To solve this problem, we can use algebra. Let x be the original area of the square. We know that when we increase the area by 21 square units, we get 100 square units. So we can set up an equation:

x + 21 = 100

To solve for x, we need to isolate it on one side of the equation. We can do this by subtracting 21 from both sides:

x + 21 - 21 = 100 - 21

x = 79

Therefore, the original area of the square was 79 square units. To check our answer, we can plug it back into the original equation:

79 + 21 = 100

This is true, so our answer is correct.

In summary, to find the original area of a square when the area is increased by 21 square units and becomes 100 square units, we can use algebra and set up the equation x + 21 = 100, where x is the original area. Solving for x, we get x = 79. Therefore, the original area of the square was 79 square units.

To find the original area of the square, we need to consider the given information: when the square's area is increased by 21 square units, it becomes 100 square units.

Since the area is increased by 21 square units to reach 100 square units, we can calculate the original area by subtracting 21 from 100:

Original Area = 100 - 21
Original Area = 79 square units

So, the original area of the square was 79 square units.

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In greedy method, A locally optimal of solution is generated

Greedy algorithms

Greedy algorithms construct a solution piece by piece, selecting the next portion in such a way that it provides an immediate benefit.

This method never reconsiders earlier decisions. This method is most commonly used to tackle optimization problems. Greedy algorithms employ a problem-solving procedure to progressively build candidate solutions, to approximate the global optimum, by obtaining better and better locally optimal solutions at each stage.

The property states that the globally optimum solution may be determined by first determining the locally optimal solution (Greedy). A Greedy algorithm's decision may be influenced by previous decisions but not by future ones.

Globally Optimal Solution

A globally optimal solution is one where there are no other feasible solutions with better objective function values. A locally optimal solution is one where there are no other feasible solutions in the vicinity with better objective function values.

It makes one Greedy decision after another iteratively, reducing the given problem to a smaller one.

Greedy is an algorithmic paradigm that assembles a solution piece by piece, constantly selecting the next component that provides the greatest evident and immediate advantage.

In greedy method, A locally optimal of solution is generated

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To find the PDF of Z=X+Y, we can use the convolution of probability density functions. Let fX(x) and fY(y) be the PDFs of X and Y, respectively. Then, the PDF of Z is:

fZ(z) = ∫fX(x)fY(z−x)dx

Since X and Y are exponentially distributed, we have:

fX(x) = λe^−λx for x > 0

fY(y) = μe^−μy for y > 0

Substituting these expressions into the convolution formula, we obtain:

fZ(z) = ∫λe^−λx μe^−μ(z−x) dx

= λμe^−μz ∫e^−(λ−μ)x dx

= λμe^−μz / (λ−μ) [1−e^(−(λ−μ)z)]

Thus, the PDF of Z is:

fZ(z) = { λμe^−μz / (λ−μ) [1−e^(−(λ−μ)z)] } for z > 0

To find the PDF of U=X−Y, we can use the change of variables technique. Let g(u,v) be the joint PDF of U and V=X. Then, we have:

g(u,v) = fX(v)fY(v−u)

Substituting the expressions for fX and fY, we get:

g(u,v) = λμe^−λve^−μ(v−u) for u < v

The PDF of U is obtained by integrating out V:

fU(u) = ∫g(u,v)dv

= ∫_u^∞ λμe^−λve^−μ(v−u) dv

= λμe^−μu ∫_0^∞ e^−(λ+μ)v dv

= λμe^−μu / (λ+μ) for all u

Therefore, the PDF of U is:

fU(u) = { λμe^−μu / (λ+μ) } for all u

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The time that a member hold his/her position at the agency is approximately 0.1 year.

Given that twenty members are elected to an agency every two years and there are 100 members on a average overall.

We have to find the time that a member hold his position at the agency.

To calculate the time we have to use multiplication which means product of two numbers.

In 2 years agency elected 20 members. It shows like under:

2 years=20 members

We require 100 members at one end so we will multiply by 5 both sides.

10 years=100 members

Now take 100 to left side of equal to sign.

10/100=1 member

1 member=1/10

=0.1

Hence a member holds 0.1 year at the agency.

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Answer:

see image

Step-by-step explanation:

see image

Answer:

15%

Step-by-step explanation:

\(\frac{7225-8500}{7225}=-15\%\)

Answer:

-13c + 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

5 - 4c - 2 - 9c

Step 2: Simplify

Answer:

-13c + 3

Step-by-step explanation:

Answer:

Scalene Traingle

Step-by-step explanation:

All the sides given are not equal so it is a scalene triangle

Answer:

ok, so forget the addition sign is there and because it's -2 do 9 - 2 which equals 7  there simple explanation

Step-by-step explanation:

hope this helps!